Vulnerability-Lookup

CVE-2026-7831 (GCVE-0-2026-7831)

Vulnerability from cvelistv5 – Published: 2026-07-01 03:33 – Updated: 2026-07-09 04:35

Title

UltraVNC viewer off-by-one stack overflow in ServerInit desktop name parsing

Summary

UltraVNC viewer through 1.8.2.2 contains an off-by-one stack buffer overflow in the RFB ServerInit message handler. In vncviewer/ClientConnection.cpp, when the server-supplied nameLength equals exactly 2024 the code declares a 2024-byte stack buffer _dn[2024] and calls ReadString(_dn, 2024). ReadString writes the NUL terminator at buf[length], i.e., _dn[2024], one byte past the end of the stack buffer. A malicious VNC server can trigger this condition by advertising a desktop name of length 2024 in its ServerInit message. On release builds without stack canaries the single-byte NUL overwrite adjacent stack data. On builds with /GS stack protection the canary is corrupted and the process terminates, resulting in denial of service. User interaction (connecting the viewer to the malicious server) is required.

Severity

7.5 (High)


                        
                          CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:H

SSVC

Exploitation: none Automatable: no Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-07-01 13:12 UTC

CWE

CWE-193 - Off-by-one Error
CWE-787 - Out-of-bounds Write

Assigner

securin mitre root Scorecard

References

3 references

URL	Tags
https://uvnc.com/	vendor-advisory
https://github.com/ultravnc/UltraVNC	product
https://www.securin.io/zero-days/cve-2026-7831-of…

Impacted products

1 product

Vendor	Product	Version
uvnc	UltraVNC	Affected: 0 , ≤ 1.8.2.2 (custom)

Credits

Arjun Basnet, Securin (arjun.basnet@securin.io)

Show details on NVD website

JSON

To clipboard

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CVE-2026-7572 (GCVE-0-2026-7572)

Vulnerability from cvelistv5 – Published: 2026-05-06 02:38 – Updated: 2026-05-06 16:42

Title

Velociraptor EVTX Parser — Process Crash via Crafted .evtx File

Summary

An off-by-one error (CWE-193) in the ConsumeUnit16Array and ConsumeUnit64Array functions in Velocidex Velociraptor before version 0.76.5 on Windows and Linux allows a local attacker to cause a Denial of Service (DoS) via a process crash by providing a specially crafted .evtx file to the parse_evtx VQL plugin.

Severity

4.4 (Medium)


                        
                          CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:L

SSVC

Exploitation: none Automatable: no Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-05-06 16:24 UTC

CWE

CWE-193 - Off-by-one Error

Assigner

rapid7 mitre root Scorecard

References

1 reference

URL	Tags
https://docs.velociraptor.app/announcements/advis…	vendor-advisory

Impacted products

1 product

Vendor	Product	Version
Velocidex	velociraptor	Affected: 0 , < 0.76.5 (semver)

Show details on NVD website

JSON

To clipboard

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CVE-2026-6861 (GCVE-0-2026-6861)

Vulnerability from cvelistv5 – Published: 2026-04-22 13:39 – Updated: 2026-04-22 15:59

Title

Emacs: emacs: memory corruption vulnerability when processing svg css

Summary

A flaw was found in GNU Emacs. This vulnerability, a memory corruption issue, occurs when Emacs processes specially crafted SVG (Scalable Vector Graphics) CSS (Cascading Style Sheets) data. A local user could exploit this by convincing a victim to open a malicious SVG file, which may lead to a denial of service (DoS) or potentially information disclosure.

Severity

6.1 (Medium)


                        
                          CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:H

SSVC

Exploitation: none Automatable: no Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-04-22 15:53 UTC

CWE

CWE-193 - Off-by-one Error

Assigner

redhat redhat root Scorecard

References

2 references

URL	Tags
https://access.redhat.com/security/cve/CVE-2026-6861	vdb-entryx_refsource_REDHAT
https://bugzilla.redhat.com/show_bug.cgi?id=2459992	issue-trackingx_refsource_REDHAT

Impacted products

5 products

Vendor	Product	Version
Red Hat	Red Hat Enterprise Linux 10	cpe:/o:redhat:enterprise_linux:10
Red Hat	Red Hat Enterprise Linux 6	cpe:/o:redhat:enterprise_linux:6
Red Hat	Red Hat Enterprise Linux 7	cpe:/o:redhat:enterprise_linux:7
Red Hat	Red Hat Enterprise Linux 8	cpe:/o:redhat:enterprise_linux:8
Red Hat	Red Hat Enterprise Linux 9	cpe:/o:redhat:enterprise_linux:9

Date Public

2026-04-19 00:00

Credits

Red Hat would like to thank Gaetano Zappulla (Tinexta Defence SpA) for reporting this issue.

Show details on NVD website

JSON

To clipboard

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CVE-2026-5123 (GCVE-0-2026-5123)

Vulnerability from cvelistv5 – Published: 2026-03-30 15:15 – Updated: 2026-04-01 18:10 X_Open Source

Title

osrg GoBGP bgp.go DecodeFromBytes off-by-one

Summary

A weakness has been identified in osrg GoBGP up to 4.3.0. This impacts the function DecodeFromBytes of the file pkg/packet/bgp/bgp.go. Executing a manipulation of the argument data[1] can lead to off-by-one. The attack may be launched remotely. Attacks of this nature are highly complex. The exploitability is said to be difficult. This patch is called 67c059413470df64bc20801c46f64058e88f800f. A patch should be applied to remediate this issue.

Severity

6.3 (Medium)


                        
                          CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:X

3.7 (Low)


                        
                          CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:L/E:X/RL:O/RC:C

3.7 (Low)


                        
                          CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:L/E:X/RL:O/RC:C

SSVC

Exploitation: none Automatable: no Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-04-01 18:10 UTC

CWE

CWE-193 - Off-by-One
CWE-189 - Numeric Error

Assigner

VulDB mitre root Scorecard

References

6 references

URL	Tags
https://vuldb.com/vuln/354155	vdb-entrytechnical-description
https://vuldb.com/vuln/354155/cti	signaturepermissions-required
https://vuldb.com/submit/780179	third-party-advisory
https://github.com/osrg/gobgp/pull/3342	issue-trackingpatch
https://github.com/osrg/gobgp/commit/67c059413470…	patch
https://github.com/osrg/gobgp/	product

Impacted products

1 product

Vendor	Product	Version
osrg	GoBGP	Affected: 4.0 Affected: 4.1 Affected: 4.2 Affected: 4.3.0

Credits

Sunxj (VulDB User)

Show details on NVD website

JSON

To clipboard

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CVE-2026-4887 (GCVE-0-2026-4887)

Vulnerability from cvelistv5 – Published: 2026-03-26 12:08 – Updated: 2026-06-16 21:43

Title

Gimp: gimp:memory disclosure and denial of service via specially crafted pcx image

Summary

A flaw was found in GIMP. This issue is a heap buffer over-read in GIMP PCX file loader due to an off-by-one error. A remote attacker could exploit this by convincing a user to open a specially crafted PCX image. Successful exploitation could lead to out-of-bounds memory disclosure and a possible application crash, resulting in a Denial of Service (DoS).

Severity

6.1 (Medium)


                        
                          CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:H

SSVC

Exploitation: none Automatable: no Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-03-26 12:58 UTC

CWE

CWE-193 - Off-by-one Error

Assigner

redhat redhat root Scorecard

References

14 references

URL	Tags
https://access.redhat.com/errata/RHSA-2026:16484	vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:17533	vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:19362	vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:20552	vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:20553	vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:20554	vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:20691	vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:25899	vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:25901	vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:25907	vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:26168	vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/security/cve/CVE-2026-4887	vdb-entryx_refsource_REDHAT
https://bugzilla.redhat.com/show_bug.cgi?id=2451669	issue-trackingx_refsource_REDHAT
https://gitlab.gnome.org/GNOME/gimp/-/issues/15960

Impacted products

16 products

Vendor	Product	Version
Red Hat	Red Hat Enterprise Linux 7 Extended Lifecycle Support	Unaffected: 2:2.8.22-1.el7_9.6 , < * (rpm) cpe:/o:redhat:rhel_els:7
Red Hat	Red Hat Enterprise Linux 8	Unaffected: 8100020260512115927.4c9c024f , < * (rpm) cpe:/a:redhat:enterprise_linux:8::appstream
Red Hat	Red Hat Enterprise Linux 8.4 Advanced Mission Critical Update Support	Unaffected: 8040020260520140422.70584597 , < * (rpm) cpe:/a:redhat:rhel_aus:8.4::appstream cpe:/a:redhat:rhel_eus_long_life:8.4::appstream
Red Hat	Red Hat Enterprise Linux 8.4 Extended Update Support Long-Life Add-On	Unaffected: 8040020260520140422.70584597 , < * (rpm) cpe:/a:redhat:rhel_aus:8.4::appstream cpe:/a:redhat:rhel_eus_long_life:8.4::appstream
Red Hat	Red Hat Enterprise Linux 8.6 Advanced Mission Critical Update Support	Unaffected: 8060020260520140100.6af1eaf0 , < * (rpm) cpe:/a:redhat:rhel_aus:8.6::appstream cpe:/a:redhat:rhel_e4s:8.6::appstream cpe:/a:redhat:rhel_tus:8.6::appstream
Red Hat	Red Hat Enterprise Linux 8.6 Telecommunications Update Service	Unaffected: 8060020260520140100.6af1eaf0 , < * (rpm) cpe:/a:redhat:rhel_aus:8.6::appstream cpe:/a:redhat:rhel_e4s:8.6::appstream cpe:/a:redhat:rhel_tus:8.6::appstream
Red Hat	Red Hat Enterprise Linux 8.6 Update Services for SAP Solutions	Unaffected: 8060020260520140100.6af1eaf0 , < * (rpm) cpe:/a:redhat:rhel_aus:8.6::appstream cpe:/a:redhat:rhel_e4s:8.6::appstream cpe:/a:redhat:rhel_tus:8.6::appstream
Red Hat	Red Hat Enterprise Linux 8.8 Telecommunications Update Service	Unaffected: 8080020260520102644.0621e4ee , < * (rpm) cpe:/a:redhat:rhel_e4s:8.8::appstream cpe:/a:redhat:rhel_tus:8.8::appstream
Red Hat	Red Hat Enterprise Linux 8.8 Update Services for SAP Solutions	Unaffected: 8080020260520102644.0621e4ee , < * (rpm) cpe:/a:redhat:rhel_e4s:8.8::appstream cpe:/a:redhat:rhel_tus:8.8::appstream
Red Hat	Red Hat Enterprise Linux 9	Unaffected: 2:3.0.4-1.el9_7.5 , < * (rpm) cpe:/a:redhat:enterprise_linux:9::appstream
Red Hat	Red Hat Enterprise Linux 9	Unaffected: 2:3.0.4-4.el9_8.4 , < * (rpm) cpe:/a:redhat:enterprise_linux:9::appstream
Red Hat	Red Hat Enterprise Linux 9.0 Update Services for SAP Solutions	Unaffected: 2:2.99.8-3.el9_0.6 , < * (rpm) cpe:/a:redhat:rhel_e4s:9.0::appstream
Red Hat	Red Hat Enterprise Linux 9.2 Update Services for SAP Solutions	Unaffected: 2:2.99.8-4.el9_2.6 , < * (rpm) cpe:/a:redhat:rhel_e4s:9.2::appstream
Red Hat	Red Hat Enterprise Linux 9.4 Update Services for SAP Solutions	Unaffected: 2:2.99.8-4.el9_4.6 , < * (rpm) cpe:/a:redhat:rhel_e4s:9.4::appstream
Red Hat	Red Hat Enterprise Linux 9.6 Extended Update Support	Unaffected: 2:2.99.8-4.el9_6.7 , < * (rpm) cpe:/a:redhat:rhel_eus:9.6::appstream
Red Hat	Red Hat Enterprise Linux 6	cpe:/o:redhat:enterprise_linux:6

Date Public

2026-03-26 11:35

Credits

Red Hat would like to thank Meshaal (@unrealmesh) for reporting this issue.

Show details on NVD website

JSON

To clipboard

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CVE-2026-2703 (GCVE-0-2026-2703)

Vulnerability from cvelistv5 – Published: 2026-02-19 04:02 – Updated: 2026-02-24 01:40 X_Open Source

Title

xlnt-community xlnt Encrypted XLSX File base64.cpp decode_base64 off-by-one

Summary

A weakness has been identified in xlnt-community xlnt up to 1.6.1. Impacted is the function xlnt::detail::decode_base64 of the file source/detail/cryptography/base64.cpp of the component Encrypted XLSX File Parser. Executing a manipulation can lead to off-by-one. The attack requires local access. The exploit has been made available to the public and could be used for attacks. This patch is called f2d7bf494e5c52706843cf7eb9892821bffb0734. Applying a patch is advised to resolve this issue.

Severity

4.8 (Medium)


                        
                          CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:P

3.3 (Low)


                        
                          CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L/E:P/RL:O/RC:C

3.3 (Low)


                        
                          CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L/E:P/RL:O/RC:C

SSVC

Exploitation: none Automatable: no Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-02-24 01:40 UTC

CWE

CWE-193 - Off-by-One
CWE-189 - Numeric Error

Assigner

VulDB mitre root Scorecard

References

7 references

URL	Tags
https://vuldb.com/?id.346649	vdb-entrytechnical-description
https://vuldb.com/?ctiid.346649	signaturepermissions-required
https://vuldb.com/?submit.754377	third-party-advisory
https://github.com/xlnt-community/xlnt/issues/137	issue-tracking
https://github.com/oneafter/0128/blob/main/xl1/repro	exploit
https://github.com/xlnt-community/xlnt/commit/f2d…	patch
https://github.com/xlnt-community/xlnt/	product

Impacted products

1 product

Vendor	Product	Version
xlnt-community	xlnt	Affected: 1.6.0 Affected: 1.6.1

Credits

Oneafter (VulDB User)

Show details on NVD website

JSON

To clipboard

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CVE-2025-54349 (GCVE-0-2025-54349)

Vulnerability from cvelistv5 – Published: 2025-08-03 00:00 – Updated: 2025-11-03 18:13

Summary

In iperf before 3.19.1, iperf_auth.c has an off-by-one error and resultant heap-based buffer overflow.

Severity

6.5 (Medium)


                        
                          CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:L/I:L/A:L

SSVC

Exploitation: none Automatable: no Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2025-08-04 13:10 UTC

CWE

CWE-193 - Off-by-one Error

Assigner

mitre mitre root Scorecard

References

3 references

URL	Tags
https://github.com/esnet/iperf/commit/4e5313bab0b…
https://github.com/esnet/iperf/releases/tag/3.19.1
https://lists.debian.org/debian-lts-announce/2025…

Impacted products

1 product

Vendor	Product	Version
ES	iperf3	Affected: 0 , < 3.19.1 (custom) cpe:2.3:a:es:iperf3::::::::

Show details on NVD website

JSON

To clipboard

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CVE-2025-53014 (GCVE-0-2025-53014)

Vulnerability from cvelistv5 – Published: 2025-07-14 17:59 – Updated: 2025-11-03 18:13

Title

ImageMagick has Heap Buffer Overflow in InterpretImageFilename

Summary

ImageMagick is free and open-source software used for editing and manipulating digital images. Versions prior to 7.1.2-0 and 6.9.13-26 have a heap buffer overflow in the `InterpretImageFilename` function. The issue stems from an off-by-one error that causes out-of-bounds memory access when processing format strings containing consecutive percent signs (`%%`). Versions 7.1.2-0 and 6.9.13-26 fix the issue.

Severity

3.7 (Low)


                        
                          CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N

SSVC

Exploitation: poc Automatable: no Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2025-07-14 18:26 UTC

CWE

CWE-125 - Out-of-bounds Read
CWE-193 - Off-by-one Error

Assigner

GitHub_M mitre root Scorecard

References

2 references

URL	Tags
https://github.com/ImageMagick/ImageMagick/securi…	x_refsource_CONFIRM
https://lists.debian.org/debian-lts-announce/2025…

Impacted products

1 product

Vendor	Product	Version
ImageMagick	ImageMagick	Affected: < 7.1.2-0 Affected: < 6.9.13-26

Show details on NVD website

JSON

To clipboard

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CVE-2025-52497 (GCVE-0-2025-52497)

Vulnerability from cvelistv5 – Published: 2025-07-04 00:00 – Updated: 2025-11-03 20:05

Summary

Mbed TLS before 3.6.4 has a PEM parsing one-byte heap-based buffer underflow, in mbedtls_pem_read_buffer and two mbedtls_pk_parse functions, via untrusted PEM input.

Severity

4.8 (Medium)


                        
                          CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:L

SSVC

Exploitation: none Automatable: no Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2025-07-08 13:18 UTC

CWE

CWE-193 - Off-by-one Error

Assigner

mitre mitre root Scorecard

References

2 references

URL	Tags
https://github.com/Mbed-TLS/mbedtls-docs/blob/mai…
https://lists.debian.org/debian-lts-announce/2025…

Impacted products

1 product

Vendor	Product	Version
Mbed	mbedtls	Affected: 0 , < 3.6.4 (custom) cpe:2.3:a:mbed:mbedtls::::::::

Show details on NVD website

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CVE-2025-47711 (GCVE-0-2025-47711)

Vulnerability from cvelistv5 – Published: 2025-06-09 06:03 – Updated: 2026-06-30 03:07

Title

Nbdkit: nbdkit-server: off-by-one error when processing block status may lead to a denial of service

Summary

There's a flaw in the nbdkit server when handling responses from its plugins regarding the status of data blocks. If a client makes a specific request for a very large data range, and a plugin responds with an even larger single block, the nbdkit server can encounter a critical internal error, leading to a denial-of-service.

Severity

6.5 (Medium)


                        
                          CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

SSVC

Exploitation: none Automatable: no Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2025-06-09 18:19 UTC

CWE

CWE-193 - Off-by-one Error

Assigner

redhat redhat root Scorecard

References

3 references

URL	Tags
https://access.redhat.com/security/cve/CVE-2025-47711	vdb-entryx_refsource_REDHAT
https://bugzilla.redhat.com/show_bug.cgi?id=2365687	issue-trackingx_refsource_REDHAT
https://lists.libguestfs.org/archives/list/guestf…

Impacted products

6 products

Vendor	Product	Version
		Affected: 1.11.10 , < 1.38.6 (semver) Affected: 1.40.0 , < 1.40.6 (semver) Affected: 1.42.0 , < 1.42.3 (semver)
Red Hat	Red Hat Enterprise Linux 10	cpe:/o:redhat:enterprise_linux:10
Red Hat	Red Hat Enterprise Linux 7	cpe:/o:redhat:enterprise_linux:7
Red Hat	Red Hat Enterprise Linux 8	cpe:/o:redhat:enterprise_linux:8
Red Hat	Red Hat Enterprise Linux 8 Advanced Virtualization	cpe:/a:redhat:advanced_virtualization:8::el8
Red Hat	Red Hat Enterprise Linux 9	cpe:/o:redhat:enterprise_linux:9

Date Public

2025-04-23 00:00

Show details on NVD website

JSON

To clipboard

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