Common Weakness Enumeration
CWE-190
AllowedInteger Overflow or Wraparound
Abstraction: Base · Status: Stable
The product performs a calculation that can produce an integer overflow or wraparound when the logic assumes that the resulting value will always be larger than the original value. This occurs when an integer value is incremented to a value that is too large to store in the associated representation. When this occurs, the value may become a very small or negative number.
4393 vulnerabilities reference this CWE, most recent first.
CVE-2026-47714 (GCVE-0-2026-47714)
Vulnerability from cvelistv5 – Published: 2026-07-21 21:04 – Updated: 2026-07-22 13:37
VLAI
EPSS
VEX
Title
libheif has integer overflow in inline mask size calculation that causes undersized buffer allocation
Summary
libheif is a HEIF and AVIF file format decoder and encoder. In versions 1.21.2 and prior, the inline mask parsing code in `libheif/region.cc` contains an integer overflow. Both `width` and `height` are `unsigned int` (32-bit) values parsed from the HEIF file. Their product can exceed `UINT32_MAX`, wrapping to a small value before the division by 8. This causes an undersized buffer allocation, leading to out-of-bounds memory access when the mask data is later interpreted as a `width x height` bitmap. Version 1.22.0 patches the issue.
Severity
6.1 (Medium)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-07-22 13:37 UTC
CWE
- CWE-190 - Integer Overflow or Wraparound
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://github.com/strukturag/libheif/security/ad… | x_refsource_CONFIRM |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| strukturag | libheif |
Affected:
< 1.22.0
|
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CVE-2026-47577 (GCVE-0-2026-47577)
Vulnerability from cvelistv5 – Published: 2026-09-30 15:50 – Updated: 2026-10-01 03:56
VLAI
EPSS
VEX
Summary
NVIDIA GPU Display Driver for Windows contains a vulnerability in the kernel module where an attacker could cause an incorrect comparison. A successful exploit of this vulnerability might lead to code execution, denial of service, escalation of privileges, information disclosure, and data tampering.
Severity
7.8 (High)
SSVC
Exploitation: none
Automatable: no
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-30 00:00 UTC
CWE
- CWE-190 - Integer Overflow or Wraparound
Assigner
References
Impacted products
10 products
| Vendor | Product | Version | |
|---|---|---|---|
| NVIDIA | GeForce |
Affected:
All driver versions prior to 610.60
|
|
| NVIDIA | RTX, Quadro, NVS |
Affected:
All driver versions prior to 610.88
|
|
| NVIDIA | GeForce |
Affected:
All driver versions prior to 616.56
|
|
| NVIDIA | RTX, Quadro, NVS |
Affected:
All driver versions prior to 616.92
|
|
| NVIDIA | GeForce |
Affected:
All driver versions prior to 582.78 Only GPUs based on the NVIDIA Maxwell, Volta, and Pascal GPU architectures are affected.
|
|
| NVIDIA | RTX, Quadro, NVS |
Affected:
All driver versions prior to 582.78
|
|
| NVIDIA | RTX, Quadro, NVS |
Affected:
All driver versions prior to 596.86
|
|
| NVIDIA | Tesla |
Affected:
All driver versions prior to 596.86
|
|
| NVIDIA | Tesla |
Affected:
All driver versions prior to 616.92
|
|
| NVIDIA | Tesla |
Affected:
All driver versions prior to 610.88
|
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CVE-2026-47556 (GCVE-0-2026-47556)
Vulnerability from cvelistv5 – Published: 2026-09-30 15:50 – Updated: 2026-10-01 03:56
VLAI
EPSS
VEX
Summary
NVIDIA GPU Display Driver for Windows and Linux contains a vulnerability in the kernel mode layer where an unprivileged user could cause an integer overflow that leads to an out-of-bounds write. A successful exploit of this vulnerability might lead to code execution, denial of service, escalation of privileges, information disclosure, and data tampering.
Severity
7.8 (High)
SSVC
Exploitation: none
Automatable: no
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-30 00:00 UTC
CWE
- CWE-190 - Integer Overflow or Wraparound
Assigner
References
Impacted products
24 products
| Vendor | Product | Version | |
|---|---|---|---|
| NVIDIA | GeForce |
Affected:
All driver versions prior to 610.60
|
|
| NVIDIA | RTX, Quadro, NVS |
Affected:
All driver versions prior to 610.88
|
|
| NVIDIA | GeForce |
Affected:
All driver versions prior to 616.56
|
|
| NVIDIA | RTX, Quadro, NVS |
Affected:
All driver versions prior to 616.92
|
|
| NVIDIA | GeForce |
Affected:
All driver versions prior to 582.78 Only GPUs based on the NVIDIA Maxwell, Volta, and Pascal GPU architectures are affected.
|
|
| NVIDIA | RTX, Quadro, NVS |
Affected:
All driver versions prior to 582.78
|
|
| NVIDIA | RTX, Quadro, NVS |
Affected:
All driver versions prior to 596.86
|
|
| NVIDIA | Tesla |
Affected:
All driver versions prior to 596.86
|
|
| NVIDIA | Tesla |
Affected:
All driver versions prior to 616.92
|
|
| NVIDIA | Tesla |
Affected:
All driver versions prior to 610.88
|
|
| NVIDIA | GeForce |
Affected:
All driver versions prior to 615.71.09
|
|
| NVIDIA | GeForce |
Affected:
All driver versions prior to 610.57.04
|
|
| NVIDIA | RTX, Quadro, NVS |
Affected:
All driver versions prior to 615.71.09
|
|
| NVIDIA | RTX, Quadro, NVS |
Affected:
All driver versions prior to 610.57.04
|
|
| NVIDIA | RTX, Quadro, NVS |
Affected:
All driver versions prior to 595.91.07
|
|
| NVIDIA | RTX, Quadro, NVS |
Affected:
All driver versions prior to 580.178.04
|
|
| NVIDIA | Tesla |
Affected:
All driver versions prior to 615.71.09
|
|
| NVIDIA | Tesla |
Affected:
All driver versions prior to 610.57.04
|
|
| NVIDIA | Tesla |
Affected:
All driver versions prior to 595.91.07
|
|
| NVIDIA | Tesla |
Affected:
All driver versions prior to 580.178.04
|
|
| NVIDIA | GeForce |
Affected:
All driver versions prior to 595.91.07
|
|
| NVIDIA | GeForce |
Affected:
All driver versions prior to 580.178.04
|
|
| NVIDIA | Guest driver |
Affected:
595.71.05(All versions prior to and including vGPU 20.1)
|
|
| NVIDIA | Guest driver |
Affected:
580.159.03(All versions prior to and including vGPU 19.5)
|
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CVE-2026-47510 (GCVE-0-2026-47510)
Vulnerability from cvelistv5 – Published: 2026-09-30 15:49 – Updated: 2026-10-01 03:56
VLAI
EPSS
VEX
Summary
NVIDIA GPU Display Driver for Windows and Linux contains a vulnerability in the kernel mode layer, where a user could cause an integer overflow leading to an out-of-bounds write to GPU memory. A successful exploit of this vulnerability might lead to code execution, denial of service, escalation of privileges, information disclosure, and data tampering.
Severity
7.8 (High)
SSVC
Exploitation: none
Automatable: no
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-30 00:00 UTC
CWE
- CWE-190 - Integer Overflow or Wraparound
Assigner
References
Impacted products
16 products
| Vendor | Product | Version | |
|---|---|---|---|
| NVIDIA | GeForce |
Affected:
All driver versions prior to 615.71.09
|
|
| NVIDIA | GeForce |
Affected:
All driver versions prior to 610.57.04
|
|
| NVIDIA | RTX, Quadro, NVS |
Affected:
All driver versions prior to 615.71.09
|
|
| NVIDIA | RTX, Quadro, NVS |
Affected:
All driver versions prior to 610.57.04
|
|
| NVIDIA | RTX, Quadro, NVS |
Affected:
All driver versions prior to 595.91.07
|
|
| NVIDIA | RTX, Quadro, NVS |
Affected:
All driver versions prior to 580.178.04
|
|
| NVIDIA | Tesla |
Affected:
All driver versions prior to 615.71.09
|
|
| NVIDIA | Tesla |
Affected:
All driver versions prior to 610.57.04
|
|
| NVIDIA | Tesla |
Affected:
All driver versions prior to 595.91.07
|
|
| NVIDIA | Tesla |
Affected:
All driver versions prior to 580.178.04
|
|
| NVIDIA | GeForce |
Affected:
All driver versions prior to 595.91.07
|
|
| NVIDIA | GeForce |
Affected:
All driver versions prior to 580.178.04
|
|
| NVIDIA | Guest driver |
Affected:
596.36(All versions prior to and including vGPU 20.1)
|
|
| NVIDIA | Guest driver |
Affected:
582.53(All versions prior to and including vGPU 19.5)
|
|
| NVIDIA | Guest driver |
Affected:
595.71.05(All versions prior to and including vGPU 20.1)
|
|
| NVIDIA | Guest driver |
Affected:
580.159.03(All versions prior to and including vGPU 19.5)
|
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CVE-2026-47502 (GCVE-0-2026-47502)
Vulnerability from cvelistv5 – Published: 2026-09-30 15:49 – Updated: 2026-10-01 03:56
VLAI
EPSS
VEX
Summary
NVIDIA vGPU Virtual GPU Manager for Windows and Linux contains a vulnerability in the kernel mode layer, where a guest user could cause an integer overflow leading to memory corruption. A successful exploit of this vulnerability might lead to code execution, denial of service, escalation of privileges, information disclosure, and data tampering.
Severity
7.8 (High)
SSVC
Exploitation: none
Automatable: no
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-30 00:00 UTC
CWE
- CWE-190 - Integer Overflow or Wraparound
Assigner
References
Impacted products
22 products
| Vendor | Product | Version | |
|---|---|---|---|
| NVIDIA | GeForce |
Affected:
All driver versions prior to 610.60
|
|
| NVIDIA | RTX, Quadro, NVS |
Affected:
All driver versions prior to 610.88
|
|
| NVIDIA | GeForce |
Affected:
All driver versions prior to 616.56
|
|
| NVIDIA | RTX, Quadro, NVS |
Affected:
All driver versions prior to 616.92
|
|
| NVIDIA | GeForce |
Affected:
All driver versions prior to 582.78 Only GPUs based on the NVIDIA Maxwell, Volta, and Pascal GPU architectures are affected.
|
|
| NVIDIA | RTX, Quadro, NVS |
Affected:
All driver versions prior to 582.78
|
|
| NVIDIA | RTX, Quadro, NVS |
Affected:
All driver versions prior to 596.86
|
|
| NVIDIA | Tesla |
Affected:
All driver versions prior to 596.86
|
|
| NVIDIA | Tesla |
Affected:
All driver versions prior to 616.92
|
|
| NVIDIA | Tesla |
Affected:
All driver versions prior to 610.88
|
|
| NVIDIA | GeForce |
Affected:
All driver versions prior to 615.71.09
|
|
| NVIDIA | GeForce |
Affected:
All driver versions prior to 610.57.04
|
|
| NVIDIA | RTX, Quadro, NVS |
Affected:
All driver versions prior to 615.71.09
|
|
| NVIDIA | RTX, Quadro, NVS |
Affected:
All driver versions prior to 610.57.04
|
|
| NVIDIA | RTX, Quadro, NVS |
Affected:
All driver versions prior to 595.91.07
|
|
| NVIDIA | RTX, Quadro, NVS |
Affected:
All driver versions prior to 580.178.04
|
|
| NVIDIA | Tesla |
Affected:
All driver versions prior to 615.71.09
|
|
| NVIDIA | Tesla |
Affected:
All driver versions prior to 610.57.04
|
|
| NVIDIA | Tesla |
Affected:
All driver versions prior to 595.91.07
|
|
| NVIDIA | Tesla |
Affected:
All driver versions prior to 580.178.04
|
|
| NVIDIA | GeForce |
Affected:
All driver versions prior to 595.91.07
|
|
| NVIDIA | GeForce |
Affected:
All driver versions prior to 580.178.04
|
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CVE-2026-47291 (GCVE-0-2026-47291)
Vulnerability from cvelistv5 – Published: 2026-06-09 17:04 – Updated: 2026-09-24 13:43
VLAI
EPSS
VEX
Title
HTTP.sys Remote Code Execution Vulnerability
Summary
Integer overflow or wraparound in Windows HTTP.sys allows an unauthorized attacker to execute code over a network.
Severity
9.8 (Critical)
SSVC
Exploitation: none
Automatable: yes
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-06-10 03:57 UTC
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://msrc.microsoft.com/update-guide/vulnerabi… | vendor-advisorypatch |
Impacted products
20 products
| Vendor | Product | Version | |
|---|---|---|---|
| Microsoft | Windows 10 Version 1607 |
Affected:
10.0.14393.0 , < 10.0.14393.9234
(custom)
|
|
| Microsoft | Windows 10 Version 1809 |
Affected:
10.0.17763.0 , < 10.0.17763.8880
(custom)
|
|
| Microsoft | Windows 10 Version 21H2 |
Affected:
10.0.19044.0 , < 10.0.19044.7417
(custom)
|
|
| Microsoft | Windows 10 Version 22H2 |
Affected:
10.0.19045.0 , < 10.0.19045.7417
(custom)
|
|
| Microsoft | Windows 11 version 23H2 |
Affected:
10.0.22631.0 , < 10.0.22631.7219
(custom)
|
|
| Microsoft | Windows 11 Version 23H2 |
Affected:
10.0.22631.0 , < 10.0.22631.7219
(custom)
|
|
| Microsoft | Windows 11 Version 24H2 |
Affected:
10.0.26100.0 , < 10.0.26100.8655
(custom)
|
|
| Microsoft | Windows 11 Version 25H2 |
Affected:
10.0.26200.0 , < 10.0.26200.8655
(custom)
|
|
| Microsoft | Windows 11 version 26H1 |
Affected:
10.0.28000.0 , < 10.0.28000.2269
(custom)
|
|
| Microsoft | Windows Server 2012 |
Affected:
6.2.9200.0 , < 6.2.9200.26132
(custom)
|
|
| Microsoft | Windows Server 2012 (Server Core installation) |
Affected:
6.2.9200.0 , < 6.2.9200.26132
(custom)
|
|
| Microsoft | Windows Server 2012 R2 |
Affected:
6.3.9600.0 , < 6.3.9600.23228
(custom)
|
|
| Microsoft | Windows Server 2012 R2 (Server Core installation) |
Affected:
6.3.9600.0 , < 6.3.9600.23228
(custom)
|
|
| Microsoft | Windows Server 2016 |
Affected:
10.0.14393.0 , < 10.0.14393.9234
(custom)
|
|
| Microsoft | Windows Server 2016 (Server Core installation) |
Affected:
10.0.14393.0 , < 10.0.14393.9234
(custom)
|
|
| Microsoft | Windows Server 2019 |
Affected:
10.0.17763.0 , < 10.0.17763.8880
(custom)
|
|
| Microsoft | Windows Server 2019 (Server Core installation) |
Affected:
10.0.17763.0 , < 10.0.17763.8880
(custom)
|
|
| Microsoft | Windows Server 2022 |
Affected:
10.0.20348.0 , < 10.0.20348.5256
(custom)
|
|
| Microsoft | Windows Server 2025 |
Affected:
10.0.26100.0 , < 10.0.26100.32995
(custom)
|
|
| Microsoft | Windows Server 2025 (Server Core installation) |
Affected:
10.0.26100.0 , < 10.0.26100.32995
(custom)
|
Date Public
2026-06-09 14:00
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"product": "Windows Server 2016",
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CVE-2026-47288 (GCVE-0-2026-47288)
Vulnerability from cvelistv5 – Published: 2026-06-09 17:04 – Updated: 2026-09-24 13:43
VLAI
EPSS
VEX
Title
Windows Kerberos Key Distribution Center (KDC) Remote Code Execution
Summary
Integer overflow or wraparound in Windows Kerberos allows an authorized attacker to execute code over an adjacent network.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-06-10 03:56 UTC
CWE
- CWE-190 - Integer Overflow or Wraparound
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://msrc.microsoft.com/update-guide/vulnerabi… | vendor-advisorypatch |
Impacted products
11 products
| Vendor | Product | Version | |
|---|---|---|---|
| Microsoft | Windows Server 2012 |
Affected:
6.2.9200.0 , < 6.2.9200.26132
(custom)
|
|
| Microsoft | Windows Server 2012 (Server Core installation) |
Affected:
6.2.9200.0 , < 6.2.9200.26132
(custom)
|
|
| Microsoft | Windows Server 2012 R2 |
Affected:
6.3.9600.0 , < 6.3.9600.23228
(custom)
|
|
| Microsoft | Windows Server 2012 R2 (Server Core installation) |
Affected:
6.3.9600.0 , < 6.3.9600.23228
(custom)
|
|
| Microsoft | Windows Server 2016 |
Affected:
10.0.14393.0 , < 10.0.14393.9234
(custom)
|
|
| Microsoft | Windows Server 2016 (Server Core installation) |
Affected:
10.0.14393.0 , < 10.0.14393.9234
(custom)
|
|
| Microsoft | Windows Server 2019 |
Affected:
10.0.17763.0 , < 10.0.17763.8880
(custom)
|
|
| Microsoft | Windows Server 2019 (Server Core installation) |
Affected:
10.0.17763.0 , < 10.0.17763.8880
(custom)
|
|
| Microsoft | Windows Server 2022 |
Affected:
10.0.20348.0 , < 10.0.20348.5256
(custom)
|
|
| Microsoft | Windows Server 2025 |
Affected:
10.0.26100.0 , < 10.0.26100.32995
(custom)
|
|
| Microsoft | Windows Server 2025 (Server Core installation) |
Affected:
10.0.26100.0 , < 10.0.26100.32995
(custom)
|
Date Public
2026-06-09 14:00
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CVE-2026-47251 (GCVE-0-2026-47251)
Vulnerability from cvelistv5 – Published: 2026-07-21 21:18 – Updated: 2026-07-22 13:48
VLAI
EPSS
VEX
Title
libheif has an incomplete fix for CVE-2026-3949: integer overflow bypass in vvdec_push_data2
Summary
libheif is a HEIF and AVIF file format decoder and encoder. The fix for CVE-2026-3949 (commit `b97c8b5`, PR #1712) introduced an integer overflow in the very security check it added. The check itself can be bypassed, allowing a crafted HEIF file with a VVC track to trigger the same out-of-bounds heap read that CVE-2026-3949 was meant to prevent. This is a separate, currently-unpatched vulnerability. Issue #1712 was closed as fixed without testing the edge case where `size` is near `UINT32_MAX`. Version 1.22.0 patches the issue.
Severity
SSVC
Exploitation: poc
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-07-22 13:38 UTC
Assigner
References
2 references
| URL | Tags |
|---|---|
| https://github.com/strukturag/libheif/security/ad… | x_refsource_CONFIRM |
| https://github.com/strukturag/libheif/issues/1712 | x_refsource_MISC |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| strukturag | libheif |
Affected:
< 1.22.0
|
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CVE-2026-47223 (GCVE-0-2026-47223)
Vulnerability from cvelistv5 – Published: 2026-06-12 17:06 – Updated: 2026-06-13 03:23
VLAI
EPSS
VEX
Title
NanaZip: Heap out-of-bounds read in NanaZip AVB hashtree descriptor parser via 32-bit unsigned integer overflow
Summary
NanaZip is the 7-Zip derivative intended for the modern Windows experience. From version 3.0.1000.0 to before version 6.0.1698.0, a heap out-of-bounds read exists in the Android Verified Boot (AVB) vbmeta image parser in NanaZip (via the upstream 7-Zip AvbHandler). A 32-bit unsigned integer overflow in the bounds check pos + ht.salt_len > descSize allows an attacker-controlled salt_len field to bypass validation, causing CByteBuffer::CopyFrom to memcpy up to ~4 GiB past the end of a 64. This issue has been patched in stable version 6.0.1698.0 and preview version 6.5.1742.0.
Severity
5.4 (Medium)
SSVC
Exploitation: poc
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-06-13 03:22 UTC
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://github.com/M2Team/NanaZip/security/adviso… | x_refsource_CONFIRM |
Impacted products
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CVE-2026-46655 (GCVE-0-2026-46655)
Vulnerability from cvelistv5 – Published: 2026-09-18 16:46 – Updated: 2026-09-23 19:15
VLAI
EPSS
VEX
Title
virtio-win: Integer overflow causing a heap overflow in Viosock driver
Summary
virtio-win provides Windows paravirtualized drivers for QEMU and KVM. From mm210 until mm320, the Viosock driver permits a low-privilege local process to submit an IOCTL_SELECT request with attacker-controlled VIRTIO_VSOCK_SELECT.Fdss[*].fd_count values that overflow the 32-bit sum used by VIOSockSelect for bounds checking. The wrapped sum can pass the FD_SETSIZE check even though an individual descriptor count is much larger than the expected limit. VIOSockSelectCopyFds then iterates using the unchecked count and writes beyond the allocated pPkt->Fds array in the NonPagedPool kernel heap. Successful exploitation can corrupt kernel memory and enable privilege escalation in a Windows guest running the driver. This issue is fixed in mm320.
Severity
7.8 (High)
SSVC
Exploitation: poc
Automatable: no
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-23 19:14 UTC
Assigner
References
4 references
| URL | Tags |
|---|---|
| https://github.com/virtio-win/kvm-guest-drivers-w… | x_refsource_CONFIRM |
| https://github.com/virtio-win/kvm-guest-drivers-w… | x_refsource_MISC |
| https://github.com/virtio-win/kvm-guest-drivers-w… | x_refsource_MISC |
| https://github.com/virtio-win/kvm-guest-drivers-w… | x_refsource_MISC |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| virtio-win | kvm-guest-drivers-windows |
Affected:
>= mm210, < mm320
|
{
"containers": {
"adp": [
{
"metrics": [
{
"other": {
"content": {
"id": "CVE-2026-46655",
"options": [
{
"Exploitation": "poc"
},
{
"Automatable": "no"
},
{
"Technical Impact": "total"
}
],
"role": "CISA Coordinator",
"timestamp": "2026-09-23T19:14:57.635548Z",
"version": "2.0.3"
},
"type": "ssvc"
}
}
],
"providerMetadata": {
"dateUpdated": "2026-09-23T19:15:05.093Z",
"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"shortName": "CISA-ADP"
},
"references": [
{
"tags": [
"exploit"
],
"url": "https://github.com/virtio-win/kvm-guest-drivers-windows/security/advisories/GHSA-qrhp-4mhp-hjwh"
}
],
"title": "CISA ADP Vulnrichment"
}
],
"cna": {
"affected": [
{
"product": "kvm-guest-drivers-windows",
"vendor": "virtio-win",
"versions": [
{
"status": "affected",
"version": "\u003e= mm210, \u003c mm320"
}
]
}
],
"descriptions": [
{
"lang": "en",
"value": "virtio-win provides Windows paravirtualized drivers for QEMU and KVM. From mm210 until mm320, the Viosock driver permits a low-privilege local process to submit an IOCTL_SELECT request with attacker-controlled VIRTIO_VSOCK_SELECT.Fdss[*].fd_count values that overflow the 32-bit sum used by VIOSockSelect for bounds checking. The wrapped sum can pass the FD_SETSIZE check even though an individual descriptor count is much larger than the expected limit. VIOSockSelectCopyFds then iterates using the unchecked count and writes beyond the allocated pPkt-\u003eFds array in the NonPagedPool kernel heap. Successful exploitation can corrupt kernel memory and enable privilege escalation in a Windows guest running the driver. This issue is fixed in mm320."
}
],
"metrics": [
{
"cvssV3_1": {
"attackComplexity": "LOW",
"attackVector": "LOCAL",
"availabilityImpact": "HIGH",
"baseScore": 7.8,
"baseSeverity": "HIGH",
"confidentialityImpact": "HIGH",
"integrityImpact": "HIGH",
"privilegesRequired": "LOW",
"scope": "UNCHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
"version": "3.1"
}
}
],
"problemTypes": [
{
"descriptions": [
{
"cweId": "CWE-122",
"description": "CWE-122: Heap-based Buffer Overflow",
"lang": "en",
"type": "CWE"
}
]
},
{
"descriptions": [
{
"cweId": "CWE-190",
"description": "CWE-190: Integer Overflow or Wraparound",
"lang": "en",
"type": "CWE"
}
]
}
],
"providerMetadata": {
"dateUpdated": "2026-09-18T16:46:50.352Z",
"orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
"shortName": "GitHub_M"
},
"references": [
{
"name": "https://github.com/virtio-win/kvm-guest-drivers-windows/security/advisories/GHSA-qrhp-4mhp-hjwh",
"tags": [
"x_refsource_CONFIRM"
],
"url": "https://github.com/virtio-win/kvm-guest-drivers-windows/security/advisories/GHSA-qrhp-4mhp-hjwh"
},
{
"name": "https://github.com/virtio-win/kvm-guest-drivers-windows/pull/1568",
"tags": [
"x_refsource_MISC"
],
"url": "https://github.com/virtio-win/kvm-guest-drivers-windows/pull/1568"
},
{
"name": "https://github.com/virtio-win/kvm-guest-drivers-windows/commit/c6bef93d7909584bbda4e5c87603ea175825f342",
"tags": [
"x_refsource_MISC"
],
"url": "https://github.com/virtio-win/kvm-guest-drivers-windows/commit/c6bef93d7909584bbda4e5c87603ea175825f342"
},
{
"name": "https://github.com/virtio-win/kvm-guest-drivers-windows/releases/tag/mm320",
"tags": [
"x_refsource_MISC"
],
"url": "https://github.com/virtio-win/kvm-guest-drivers-windows/releases/tag/mm320"
}
],
"source": {
"advisory": "GHSA-qrhp-4mhp-hjwh",
"discovery": "UNKNOWN"
},
"title": "virtio-win: Integer overflow causing a heap overflow in Viosock driver"
}
},
"cveMetadata": {
"assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
"assignerShortName": "GitHub_M",
"cveId": "CVE-2026-46655",
"datePublished": "2026-09-18T16:46:34.832Z",
"dateReserved": "2026-05-15T20:11:54.585Z",
"dateUpdated": "2026-09-23T19:15:05.093Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.2"
}
Mitigation
Requirements
Ensure that all protocols are strictly defined, such that all out-of-bounds behavior can be identified simply, and require strict conformance to the protocol.
Mitigation MIT-3
Requirements
Strategy: Language Selection
- Use a language that does not allow this weakness to occur or provides constructs that make this weakness easier to avoid.
- If possible, choose a language or compiler that performs automatic bounds checking.
Mitigation MIT-4
Architecture and Design
Strategy: Libraries or Frameworks
- Use a vetted library or framework that does not allow this weakness to occur or provides constructs that make this weakness easier to avoid [REF-1482].
- Use libraries or frameworks that make it easier to handle numbers without unexpected consequences.
- Examples include safe integer handling packages such as SafeInt (C++) or IntegerLib (C or C++). [REF-106]
Mitigation MIT-8
Implementation
Strategy: Input Validation
- Perform input validation on any numeric input by ensuring that it is within the expected range. Enforce that the input meets both the minimum and maximum requirements for the expected range.
- Use unsigned integers where possible. This makes it easier to perform validation for integer overflows. When signed integers are required, ensure that the range check includes minimum values as well as maximum values.
Mitigation MIT-36
Implementation
- Understand the programming language's underlying representation and how it interacts with numeric calculation (CWE-681). Pay close attention to byte size discrepancies, precision, signed/unsigned distinctions, truncation, conversion and casting between types, "not-a-number" calculations, and how the language handles numbers that are too large or too small for its underlying representation. [REF-7]
- Also be careful to account for 32-bit, 64-bit, and other potential differences that may affect the numeric representation.
Mitigation MIT-15
Architecture and Design
For any security checks that are performed on the client side, ensure that these checks are duplicated on the server side, in order to avoid CWE-602. Attackers can bypass the client-side checks by modifying values after the checks have been performed, or by changing the client to remove the client-side checks entirely. Then, these modified values would be submitted to the server.
Mitigation MIT-26
Implementation
Strategy: Compilation or Build Hardening
Examine compiler warnings closely and eliminate problems with potential security implications, such as signed / unsigned mismatch in memory operations, or use of uninitialized variables. Even if the weakness is rarely exploitable, a single failure may lead to the compromise of the entire system.
CAPEC-92: Forced Integer Overflow
This attack forces an integer variable to go out of range. The integer variable is often used as an offset such as size of memory allocation or similarly. The attacker would typically control the value of such variable and try to get it out of range. For instance the integer in question is incremented past the maximum possible value, it may wrap to become a very small, or negative number, therefore providing a very incorrect value which can lead to unexpected behavior. At worst the attacker can execute arbitrary code.