Common Weakness Enumeration

CWE-476

Allowed

NULL Pointer Dereference

Abstraction: Base · Status: Stable

API response cwe.mitre.org

The product dereferences a pointer that it expects to be valid but is NULL.

7038 vulnerabilities reference this CWE, most recent first.

CVE-2026-120046 (GCVE-0-2026-120046)

Vulnerability from cvelistv5 – Published: 2026-10-30 18:52 – Updated: 2026-10-30 18:52
VLAI
Title
Nezha 2.0.0 before 2.4.0 Startup NULL Pointer Dereference via Orphaned Service History
Summary
Nezha 2.0.0 before 2.4.0 contains a NULL pointer dereference vulnerability in ServiceSentinel.loadTodayStats that allows authenticated users to crash the dashboard by deleting a service. Attackers can delete their own service via POST /api/v1/batch-delete/service, leaving orphaned service_histories rows that crash the non-TSDB dashboard on its next startup until removed manually.
Severity
6 (Medium)
CVSS:4.0/AV:N/AC:H/AT:P/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N
5.3 (Medium)
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H
CWE
  • CWE-476 - NULL Pointer Dereference
Assigner
VulnCheck CNA under the mitre root
CNA scorecard B 84/100 over 7140 records in the last 180 days details
References
Impacted products
Vendor Product Version
nezhahq nezha Affected: 2.0.0 , < 2.4.0 (semver)
Create a notification for this product.
Date Public
2026-10-21 00:00
Credits
Zachariah Mithani (AploSec) naiba
Show details on NVD website
To clipboard 

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CVE-2026-119842 (GCVE-0-2026-119842)

Vulnerability from cvelistv5 – Published: 2026-10-30 18:51 – Updated: 2026-10-30 22:15
VLAI
Title
Gst-plugins-base: gst-plugins-base: null-pointer dereference in mdvdsub subtitle parser via missing closing-brace check
Summary
A flaw was found in GStreamer's gst-plugins-base MicroDVD subtitle parser. When processing a specially crafted subtitle file, the parser may dereference a NULL pointer, causing the application to crash when a user opens or plays media with a malformed MicroDVD (.sub) subtitle file.
Severity
6.5 (Medium)
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/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 2026-10-30 21:18 UTC
CWE
  • CWE-476 - NULL Pointer Dereference
Assigner
redhat CNA under the redhat root
CNA scorecard B 82/100 over 1081 records in the last 180 days details
References
Impacted products
Date Public
2026-04-07 00:00
Show details on NVD website
To clipboard 

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CVE-2026-119760 (GCVE-0-2026-119760)

Vulnerability from cvelistv5 – Published: 2026-10-30 17:19 – Updated: 2026-10-30 17:19
VLAI
Title
sniproxy through 0.7.0 NULL Pointer Dereference via resolv_cancel()
Summary
sniproxy through 0.7.0 contains a NULL pointer dereference vulnerability in resolv_cancel() that allows remote unauthenticated attackers to crash the daemon by sending overlong hostnames. Attackers can send a 254 or 255 character TLS SNI name or HTTP Host header matching a wildcard backend, then close the connection to terminate the proxy.
Severity
8.7 (High)
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N
7.5 (High)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
CWE
  • CWE-476 - NULL Pointer Dereference
Assigner
VulnCheck CNA under the mitre root
CNA scorecard B 84/100 over 7140 records in the last 180 days details
References
Impacted products
Vendor Product Version
dlundquist sniproxy Affected: 0 , ≤ 0.7.0 (semver)
    cpe:2.3:a:sniproxy_project:sniproxy:*:*:*:*:*:*:*:*
Create a notification for this product.
Date Public
2026-10-23 00:00
Credits
Renaud Allard
Show details on NVD website
To clipboard 

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CVE-2026-119728 (GCVE-0-2026-119728)

Vulnerability from cvelistv5 – Published: 2026-10-30 18:34 – Updated: 2026-10-30 20:00
VLAI
Title
Gst-plugins-bad: gst-plugins-bad: null pointer dereference in h.264 mvc sps cleanup during parse failure
Summary
A flaw was found in the H.264 video parser in gst-plugins-bad. When processing a specially crafted H.264 video file with malformed Multiview (MVC) Sequence Parameter Set data, the parser can dereference a NULL pointer during the cleanup of partially allocated internal structures after a parse failure. This can cause the application using GStreamer to crash, resulting in a denial of service.
Severity
5.5 (Medium)
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/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 2026-10-30 18:55 UTC
CWE
  • CWE-476 - NULL Pointer Dereference
Assigner
redhat CNA under the redhat root
CNA scorecard B 82/100 over 1081 records in the last 180 days details
References
Impacted products
Date Public
2026-04-07 00:00
Show details on NVD website
To clipboard 

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CVE-2026-119188 (GCVE-0-2026-119188)

Vulnerability from cvelistv5 – Published: 2026-10-29 19:21 – Updated: 2026-10-30 16:09
VLAI
Title
Forge: Denial of service in TLS record processing via a record interleaved with a fragmented handshake message
Summary
Forge (also called node-forge) is a native implementation of Transport Layer Security in JavaScript. Prior to 1.4.1, the affected implementation used forge.tls.createConnection(), fragmented handshake message, interleaved record to process the relevant input or security decision. node-forge continued processing after a TLS record of another content type interrupted a fragmented handshake message. A remote peer could trigger an uncaught TypeError in process(), causing the connection or hosting process to fail. This issue is fixed in version 1.4.1.
Severity
7.5 (High)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
SSVC
Exploitation: none Automatable: yes Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-10-30 15:47 UTC
CWE
Assigner
GitHub_M CNA under the mitre root
CNA scorecard C 72/100 over 8035 records in the last 180 days details
References
Impacted products
Vendor Product Version
digitalbazaar forge Affected: < 1.4.1
Create a notification for this product.
Show details on NVD website
To clipboard 

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CVE-2026-118778 (GCVE-0-2026-118778)

Vulnerability from cvelistv5 – Published: 2026-10-29 18:44 – Updated: 2026-10-29 18:44
VLAI
Title
Forge: TLS client crash when the server sends no certificate
Summary
Forge (also called node-forge) is a native implementation of Transport Layer Security in JavaScript. Prior to 1.4.1, the affected implementation used forge.tls.createConnection(), c.session.serverCertificate, RSA key exchange to process the relevant input or security decision. node-forge's TLS client checked the wrong property when deciding whether a server certificate was missing. A malicious TLS server or on-path peer could omit the Certificate message and reach code that dereferenced the absent certificate, causing an uncaught exception and terminating the connection or process. This issue is fixed in version 1.4.1.
Severity
5.9 (Medium)
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H
CWE
  • CWE-476 - NULL Pointer Dereference
Assigner
GitHub_M CNA under the mitre root
CNA scorecard C 72/100 over 8035 records in the last 180 days details
References
Impacted products
Vendor Product Version
digitalbazaar forge Affected: < 1.4.1
Create a notification for this product.
Show details on NVD website
To clipboard 

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CVE-2026-117610 (GCVE-0-2026-117610)

Vulnerability from cvelistv5 – Published: 2026-10-28 02:03 – Updated: 2026-10-28 02:03
VLAI
Title
libexpat through 2.9.0 NULL Pointer Dereference via External Entity Subparser
Summary
libexpat through 2.9.0 contains a NULL pointer dereference vulnerability in externalEntityInitProcessor2() in lib/xmlparse.c that mishandles the XML_TOK_NONE token from empty input. Attackers who control stream chunking can force an empty non-final first parse on an external entity subparser, causing a later parse to crash the application.
Severity
8.2 (High)
CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N
5.9 (Medium)
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H
CWE
  • CWE-476 - NULL Pointer Dereference
Assigner
VulnCheck CNA under the mitre root
CNA scorecard B 84/100 over 7140 records in the last 180 days details
References
Impacted products
Vendor Product Version
libexpat libexpat Affected: 0 , ≤ 2.9.0 (semver)
    cpe:2.3:a:libexpat_project:libexpat:*:*:*:*:*:*:*:*
Create a notification for this product.
Date Public
2026-10-26 00:00
Credits
Minkyung Park Sebastian Pipping
Show details on NVD website
To clipboard 

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CVE-2026-117548 (GCVE-0-2026-117548)

Vulnerability from cvelistv5 – Published: 2026-10-29 06:22 – Updated: 2026-10-29 06:22
VLAI
Title
389-ds-base: 389-ds-base: null pointer dereference via modifydn using an attribute's schema alias name causes denial of service
Summary
A NULL pointer dereference flaw was found in 389-ds-base. This flaw occurs when a ModifyDN (rename) operation uses an attribute's schema alias name (such as "commonName") instead of its canonical name (such as "cn") as the new relative distinguished name. An authenticated attacker with the ModifyDN (rename) permission on the affected entry can use this flaw to crash the directory server, causing 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
CWE
  • CWE-476 - NULL Pointer Dereference
Assigner
redhat CNA under the redhat root
CNA scorecard B 82/100 over 1081 records in the last 180 days details
References
URL Tags
https://access.redhat.com/security/cve/CVE-2026-117548 vdb-entryx_refsource_REDHAT
https://bugzilla.redhat.com/show_bug.cgi?id=2561778 issue-trackingx_refsource_REDHAT
Impacted products
Date Public
2026-10-27 11:08
Credits
Red Hat would like to thank Chad Sikorra for reporting this issue.
Show details on NVD website
To clipboard 

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CVE-2026-116740 (GCVE-0-2026-116740)

Vulnerability from cvelistv5 – Published: 2026-10-26 21:52 – Updated: 2026-10-31 02:01
VLAI
Title
libcss through 0.9.2 NULL Pointer Dereference via Media-Query Parser
Summary
libcss through 0.9.2 contains a NULL pointer dereference vulnerability in mq_parse_media_query() that allows remote attackers to crash consumers by supplying media lists ending in a comma. Attackers can serve a stylesheet whose @media or @import media list has a trailing comma, causing NetSurf or other parsers to crash.
Severity
7.1 (High)
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N
6.5 (Medium)
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/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 2026-10-31 02:00 UTC
CWE
  • CWE-476 - NULL Pointer Dereference
Assigner
VulnCheck CNA under the mitre root
CNA scorecard B 84/100 over 7140 records in the last 180 days details
References
Impacted products
Vendor Product Version
netsurf-browser libcss Affected: 0 , ≤ 0.9.2 (custom)
Create a notification for this product.
Date Public
2026-08-30 00:00
Credits
HaiND from the Post and Telecommunication Institute of Technology metan-ucw
Show details on NVD website
To clipboard 

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CVE-2026-116658 (GCVE-0-2026-116658)

Vulnerability from cvelistv5 – Published: 2026-10-27 17:35 – Updated: 2026-10-27 17:35
VLAI
Title
Tanium addressed a denial of service vulnerability in Enforce.
Summary
Tanium addressed a denial of service vulnerability in Enforce.
Severity
6.5 (Medium)
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
CWE
  • CWE-476 - NULL Pointer Dereference
Assigner
Tanium CNA under the mitre root
CNA scorecard D 60/100 over 68 records in the last 180 days details
References
Impacted products
Vendor Product Version
Tanium Enforce Affected: 2.9 , < 2.9.736 (custom)
Affected: 2.10 , < 2.10.778 (custom)
Affected: 3.0 , < 3.0.373 (custom)
Create a notification for this product.
Date Public
2026-10-27 17:26
Show details on NVD website
To clipboard 

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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.

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