Common Weakness Enumeration
CWE-476
AllowedNULL Pointer Dereference
Abstraction: Base · Status: Stable
The product dereferences a pointer that it expects to be valid but is NULL.
6742 vulnerabilities reference this CWE, most recent first.
CVE-2026-48829 (GCVE-0-2026-48829)
Vulnerability from cvelistv5 – Published: 2026-05-24 02:22 – Updated: 2026-06-05 16:00
VLAI
EPSS
VEX
Summary
In GNU SASL before 2.2.3, DIGEST-MD5 has a NULL pointer dereference affecting both clients and servers, via a known token with no accompanying = character. This occurs in lib/digest-md5/getsubopt.c.
Severity
7.5 (High)
SSVC
Exploitation: none
Automatable: yes
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-05-26 15:07 UTC
CWE
- CWE-476 - NULL Pointer Dereference
Assigner
References
Impacted products
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CVE-2026-48756 (GCVE-0-2026-48756)
Vulnerability from cvelistv5 – Published: 2026-08-21 14:10 – Updated: 2026-08-21 21:44
VLAI
EPSS
VEX
Title
Incus: CreateCustomVolumeFromBackup nil-pointer dereference on volume_snapshots[*].expires_at (sibling-field variant of GHSA-r7w7)
Summary
Incus is a system container and virtual machine manager. Prior to version 7.1.0, `(*backend).CreateCustomVolumeFromBackup` in `internal/server/storage/backend.go` contains an unguarded `*time.Time` dereference on the `ExpiresAt` field of every volume-snapshot entry in an imported custom-volume backup. An authenticated user with `can_create_storage_volumes` permission on any project can crash the `incusd` daemon by uploading a backup tarball whose `volume_snapshots[*].expires_at` field is absent. This is a sibling-field variant of GHSA-r7w7-mmxr-47r9 (CVE-2026-40197). Commit `985a1dedf9f3e7ba729c93b654905ed510de25c2` added `if s == nil` at the top of the loop body, but did not guard the adjacent `*snapshot.ExpiresAt` deref 19 lines later. Every other consumer of `Config.VolumeSnapshots[i].ExpiresAt` in this same file already gates the deref with a nil-check — the asymmetric guard is the bug. Version 7.1.0 contains an updated patch.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-08-21 20:58 UTC
CWE
- CWE-476 - NULL Pointer Dereference
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://github.com/lxc/incus/security/advisories/… | x_refsource_CONFIRM |
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CVE-2026-48754 (GCVE-0-2026-48754)
Vulnerability from cvelistv5 – Published: 2026-08-21 14:36 – Updated: 2026-08-26 17:26
VLAI
EPSS
VEX
Title
Incus: Nil-pointer dereference in createDependentVolumesFromBackup on disk.{Volume,VolumeSnapshots,Pool}
Summary
Incus is a system container and virtual machine manager. Prior to version 7.1.0, `(*backend).createDependentVolumesFromBackup` in `internal/server/storage/backend.go` contains a cluster of unguarded pointer derefs on every dependent-volume entry's `VolumeSnapshots[i]`, `Volume`, and `Pool` sub-fields. An authenticated user with `can_create_instances` permission on any project can crash the `incusd` daemon by uploading an instance backup tarball whose `dependent_volumes[*]` block contains a nil snapshot pointer (or omits `volume:` / `pool:`). This is a sibling-field variant of the 2026-05-04 batch fix `d768f81c0a1d985f35ae56219519822b080bf5e3` ("Properly check dependent volumes on import"). That commit added `if disk == nil` at the top of the outer loop, but did not guard the four sub-pointer fields the loop body dereferences naked. Version 7.1.0 contains an updated patch.
Severity
SSVC
Exploitation: poc
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-08-26 17:25 UTC
CWE
- CWE-476 - NULL Pointer Dereference
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://github.com/lxc/incus/security/advisories/… | x_refsource_CONFIRM |
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CVE-2026-48521 (GCVE-0-2026-48521)
Vulnerability from cvelistv5 – Published: 2026-09-21 19:44 – Updated: 2026-09-21 20:04
VLAI
EPSS
VEX
Title
Envoy: HTTP/3 connection pool selection null-derefs in ProdClusterManagerFactory::allocateConnPool when transport_socket_options is null
Summary
Envoy is an open source edge and service proxy designed for cloud-native applications. Prior to 1.36.10, 1.37.6, 1.38.4, and 1.39.1, Envoy's ProdClusterManagerFactory::allocateConnPool dereferences transport_socket_options while selecting an HTTP/3 connection pool without first checking whether the pointer is null. LoadBalancerContext implementations used by synthetic, mirror, health-check, and async-client calls can return no transport-socket options. With auto_config and HTTP/3 enabled, routine traffic reaching one of those contexts can crash an Envoy worker. The relevant scope boundary is that the affected branch requires HTTP/3 in the protocol set and a context that supplies no transport-socket options. This issue is fixed in versions 1.36.10, 1.37.6, 1.38.4, and 1.39.1.
Severity
5.9 (Medium)
SSVC
Exploitation: poc
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-21 20:02 UTC
CWE
- CWE-476 - NULL Pointer Dereference
Assigner
References
9 references
| URL | Tags |
|---|---|
| https://github.com/envoyproxy/envoy/security/advi… | x_refsource_CONFIRM |
| https://github.com/envoyproxy/envoy/commit/8ef2da… | x_refsource_MISC |
| https://github.com/envoyproxy/envoy/commit/cec489… | x_refsource_MISC |
| https://github.com/envoyproxy/envoy/commit/e7b483… | x_refsource_MISC |
| https://github.com/envoyproxy/envoy/commit/f5436f… | x_refsource_MISC |
| https://github.com/envoyproxy/envoy/releases/tag/… | x_refsource_MISC |
| https://github.com/envoyproxy/envoy/releases/tag/… | x_refsource_MISC |
| https://github.com/envoyproxy/envoy/releases/tag/… | x_refsource_MISC |
| https://github.com/envoyproxy/envoy/releases/tag/… | x_refsource_MISC |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| envoyproxy | envoy |
Affected:
< 1.36.10
Affected: >= 1.37.0, < 1.37.6 Affected: >= 1.38.0, < 1.38.4 Affected: >= 1.39.0, < 1.39.1 |
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CVE-2026-48438 (GCVE-0-2026-48438)
Vulnerability from cvelistv5 – Published: 2026-08-11 16:59 – Updated: 2026-08-27 22:34
VLAI
EPSS
VEX
Title
CAI Content Credentials | NULL Pointer Dereference (CWE-476)
Summary
CAI Content Credentials is affected by a NULL Pointer Dereference vulnerability that could result in an application denial-of-service. An attacker could exploit this vulnerability to crash the application, leading to a denial-of-service condition. Exploitation of this issue does not require user interaction.
Severity
7.5 (High)
SSVC
Exploitation: none
Automatable: yes
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-08-11 18:39 UTC
CWE
- CWE-476 - NULL Pointer Dereference (CWE-476)
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://helpx.adobe.com/security/products/content… | vendor-advisory |
Impacted products
3 products
| Vendor | Product | Version | |
|---|---|---|---|
| Adobe | Content Credentials Rust SDK |
Affected:
0 , ≤ c2pa-v0.90.5
(custom)
Unaffected: c2pa-v0.90.6 (custom) |
|
| Adobe | Content Credentials Command-Line Tool |
Affected:
0 , ≤ c2patool-v0.27.5
(custom)
Unaffected: c2patool-v0.27.6 (custom) |
|
| Adobe | Content Credentials JS SDK |
Affected:
0 , ≤ @contentauth/c2pa-web@0.12.0
(custom)
Unaffected: @contentauth/c2pa-web@0.12.1 (custom) |
Date Public
2026-08-11 17:00
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CVE-2026-48429 (GCVE-0-2026-48429)
Vulnerability from cvelistv5 – Published: 2026-08-25 17:42 – Updated: 2026-08-27 22:32
VLAI
EPSS
VEX
Title
Substance3D - Designer | NULL Pointer Dereference (CWE-476)
Summary
Substance3D - Designer is affected by a NULL Pointer Dereference vulnerability that could result in an application denial-of-service. An attacker could exploit this vulnerability to crash the application, leading to a denial-of-service condition. Exploitation of this issue requires user interaction in that a victim must open a malicious file.
Severity
5.5 (Medium)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-08-25 19:01 UTC
CWE
- CWE-476 - NULL Pointer Dereference (CWE-476)
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://helpx.adobe.com/security/products/substan… | vendor-advisory |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Adobe | Adobe Substance 3D Designer |
Affected:
0 , ≤ 16.0.4
(semver)
Unaffected: 16.0.5 (semver) |
Date Public
2026-08-25 17:00
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CVE-2026-48267 (GCVE-0-2026-48267)
Vulnerability from cvelistv5 – Published: 2026-07-06 19:45 – Updated: 2026-08-27 22:37
VLAI
EPSS
VEX
Title
DNG SDK | NULL Pointer Dereference (CWE-476)
Summary
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Severity
5.5 (Medium)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-07-07 13:43 UTC
CWE
- CWE-476 - NULL Pointer Dereference (CWE-476)
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://helpx.adobe.com/security/products/dng-sdk… | vendor-advisory |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Adobe | Adobe DNG Software Development Kit (SDK) |
Affected:
0 , ≤ 1.7.1.2536
(custom)
Unaffected: 1.7.1.2611 (custom) |
Date Public
2026-06-09 17:00
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CVE-2026-48139 (GCVE-0-2026-48139)
Vulnerability from cvelistv5 – Published: 2026-06-19 13:22 – Updated: 2026-06-22 17:31
VLAI
EPSS
VEX
Title
NULL pointer dereference vulnerability in NI grpc-device data moniker service
Summary
There is a NULL pointer dereference vulnerability in NI grpc-device in the data moniker service that may allow an attacker to cause a denial of service by triggering a crash. Successful exploitation requires an attacker to provide an unknown value to the data moniker service. This affects NI grpc-device 2.17.0 and prior versions.
Severity
SSVC
Exploitation: none
Automatable: yes
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-06-22 17:31 UTC
CWE
- CWE-476 - NULL pointer dereference
Assigner
References
2 references
| URL | Tags |
|---|---|
| https://www.ni.com/en/support/security/available-… | vendor-advisory |
| https://github.com/ni/grpc-device/security/adviso… | vendor-advisory |
Impacted products
2 products
| Vendor | Product | Version | |
|---|---|---|---|
| NI | grpc-device |
Affected:
0 , ≤ 2.17.0
(semver)
cpe:2.3:a:ni:grpc-device:*:*:*:*:*:*:*:* |
|
| NI | InstrumentStudio |
Affected:
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cpe:2.3:a:ni:instrumentstudio:*:*:*:*:*:*:*:* |
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CVE-2026-48097 (GCVE-0-2026-48097)
Vulnerability from cvelistv5 – Published: 2026-08-07 19:06 – Updated: 2026-08-07 19:34
VLAI
EPSS
VEX
Title
NexTOR_IP_CHANGER has PATH Injection Leading to Arbitrary Command Execution
Summary
NexTor IP Changer is a command-line tool that leverages the Tor network to periodically rotate a user's IP address. Versions prior to 2.0.0 have a command execution vulnerability due to unsafe use of `shell=True` with commands that rely on executable resolution through the `PATH` environment variable. An attacker controlling the execution environment can place malicious executables such as sudo earlier in the `PATH`, resulting in execution of attacker-controlled code. Version 2.0.0 fixes the issue.
Severity
7.8 (High)
SSVC
Exploitation: none
Automatable: no
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-08-07 19:34 UTC
CWE
Assigner
References
2 references
| URL | Tags |
|---|---|
| https://github.com/0x5t4l1n/NexTOR_IP_CHANGER/sec… | x_refsource_CONFIRM |
| https://github.com/0x5t4l1n/NexTOR_IP_CHANGER/rel… | x_refsource_MISC |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| 0x5t4l1n | NexTOR_IP_CHANGER |
Affected:
< 2.0.0
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CVE-2026-48066 (GCVE-0-2026-48066)
Vulnerability from cvelistv5 – Published: 2026-05-27 19:57 – Updated: 2026-05-28 12:54
VLAI
EPSS
VEX
Title
pam_usb: Thread-unsafe static pointer in log.c causes data race under concurrent PAM authentication
Summary
pam_usb provides hardware authentication for Linux using ordinary removable media. Prior to 0.9.1, src/log.c contains a process-wide static pointer that is written on every PAM invocation with the address of a stack-local variable. This violates the PAM re-entrancy requirement and creates a data race when the PAM stack is invoked concurrently from multiple threads. This vulnerability is fixed in 0.9.1.
Severity
5.7 (Medium)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-05-28 12:54 UTC
CWE
Assigner
References
3 references
| URL | Tags |
|---|---|
| https://github.com/mcdope/pam_usb/security/adviso… | x_refsource_CONFIRM |
| https://github.com/mcdope/pam_usb/issues/350 | x_refsource_MISC |
| https://github.com/mcdope/pam_usb/issues/55 | x_refsource_MISC |
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Mitigation MIT-56
Implementation
For any pointers that could have been modified or provided from a function that can return NULL, check the pointer for NULL before use. When working with a multithreaded or otherwise asynchronous environment, ensure that proper locking APIs are used to lock before the check, and unlock when it has finished [REF-1484].
Mitigation
Requirements
Select a programming language that is not susceptible to these issues.
Mitigation
Implementation
Check the results of all functions that return a value and verify that the value is non-null before acting upon it.
Mitigation
Architecture and Design
Identify all variables and data stores that receive information from external sources, and apply input validation to make sure that they are only initialized to expected values.
Mitigation
Implementation
Explicitly initialize all variables and other data stores, either during declaration or just before the first usage.
No CAPEC attack patterns related to this CWE.