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.
1661 vulnerabilities reference this CWE, most recent first.
CVE-2026-24641 (GCVE-0-2026-24641)
Vulnerability from cvelistv5 – Published: 2026-03-10 16:44 – Updated: 2026-11-06 15:42
VLAI
EPSS
VEX
Summary
A NULL Pointer Dereference vulnerability [CWE-476] vulnerability in Fortinet FortiWeb 8.0.0 through 8.0.2, FortiWeb 7.6.0 through 7.6.6, FortiWeb 7.4 all versions, FortiWeb 7.2 all versions, FortiWeb 7.0 all versions may allow an authenticated attacker to crash the HTTP daemon via crafted HTTP requests.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-03-12 14:27 UTC
CWE
- CWE-476 - Denial of service
Assigner
fortinet
CNA
References
1 reference
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Fortinet | FortiWeb |
Affected:
8.0.0 , ≤ 8.0.2
(semver)
Affected: 7.6.0 , ≤ 7.6.6 (semver) Affected: 7.4.0 , ≤ 7.4.13 (semver) Affected: 7.2.0 , ≤ 7.2.13 (semver) Affected: 7.0.0 , ≤ 7.0.12 (semver) cpe:2.3:a:fortinet:fortiweb:8.0.2:*:*:*:*:*:*:* cpe:2.3:a:fortinet:fortiweb:8.0.1:*:*:*:*:*:*:* cpe:2.3:a:fortinet:fortiweb:8.0.0:*:*:*:*:*:*:* cpe:2.3:a:fortinet:fortiweb:7.6.6:*:*:*:*:*:*:* cpe:2.3:a:fortinet:fortiweb:7.6.5:*:*:*:*:*:*:* cpe:2.3:a:fortinet:fortiweb:7.6.4:*:*:*:*:*:*:* cpe:2.3:a:fortinet:fortiweb:7.6.3:*:*:*:*:*:*:* cpe:2.3:a:fortinet:fortiweb:7.6.2:*:*:*:*:*:*:* cpe:2.3:a:fortinet:fortiweb:7.6.1:*:*:*:*:*:*:* cpe:2.3:a:fortinet:fortiweb:7.6.0:*:*:*:*:*:*:* cpe:2.3:a:fortinet:fortiweb:7.4.13:*:*:*:*:*:*:* cpe:2.3:a:fortinet:fortiweb:7.4.12:*:*:*:*:*:*:* cpe:2.3:a:fortinet:fortiweb:7.4.11:*:*:*:*:*:*:* cpe:2.3:a:fortinet:fortiweb:7.4.10:*:*:*:*:*:*:* cpe:2.3:a:fortinet:fortiweb:7.4.9:*:*:*:*:*:*:* cpe:2.3:a:fortinet:fortiweb:7.4.8:*:*:*:*:*:*:* cpe:2.3:a:fortinet:fortiweb:7.4.7:*:*:*:*:*:*:* cpe:2.3:a:fortinet:fortiweb:7.4.6:*:*:*:*:*:*:* cpe:2.3:a:fortinet:fortiweb:7.4.5:*:*:*:*:*:*:* cpe:2.3:a:fortinet:fortiweb:7.4.4:*:*:*:*:*:*:* cpe:2.3:a:fortinet:fortiweb:7.4.3:*:*:*:*:*:*:* cpe:2.3:a:fortinet:fortiweb:7.4.2:*:*:*:*:*:*:* cpe:2.3:a:fortinet:fortiweb:7.4.1:*:*:*:*:*:*:* cpe:2.3:a:fortinet:fortiweb:7.4.0:*:*:*:*:*:*:* cpe:2.3:a:fortinet:fortiweb:7.2.13:*:*:*:*:*:*:* cpe:2.3:a:fortinet:fortiweb:7.2.12:*:*:*:*:*:*:* cpe:2.3:a:fortinet:fortiweb:7.2.11:*:*:*:*:*:*:* cpe:2.3:a:fortinet:fortiweb:7.2.10:*:*:*:*:*:*:* cpe:2.3:a:fortinet:fortiweb:7.2.9:*:*:*:*:*:*:* cpe:2.3:a:fortinet:fortiweb:7.2.8:*:*:*:*:*:*:* cpe:2.3:a:fortinet:fortiweb:7.2.7:*:*:*:*:*:*:* cpe:2.3:a:fortinet:fortiweb:7.2.6:*:*:*:*:*:*:* cpe:2.3:a:fortinet:fortiweb:7.2.5:*:*:*:*:*:*:* cpe:2.3:a:fortinet:fortiweb:7.2.4:*:*:*:*:*:*:* cpe:2.3:a:fortinet:fortiweb:7.2.3:*:*:*:*:*:*:* cpe:2.3:a:fortinet:fortiweb:7.2.2:*:*:*:*:*:*:* cpe:2.3:a:fortinet:fortiweb:7.2.1:*:*:*:*:*:*:* cpe:2.3:a:fortinet:fortiweb:7.2.0:*:*:*:*:*:*:* cpe:2.3:a:fortinet:fortiweb:7.0.12:*:*:*:*:*:*:* cpe:2.3:a:fortinet:fortiweb:7.0.11:*:*:*:*:*:*:* cpe:2.3:a:fortinet:fortiweb:7.0.10:*:*:*:*:*:*:* cpe:2.3:a:fortinet:fortiweb:7.0.9:*:*:*:*:*:*:* cpe:2.3:a:fortinet:fortiweb:7.0.8:*:*:*:*:*:*:* cpe:2.3:a:fortinet:fortiweb:7.0.7:*:*:*:*:*:*:* cpe:2.3:a:fortinet:fortiweb:7.0.6:*:*:*:*:*:*:* cpe:2.3:a:fortinet:fortiweb:7.0.5:*:*:*:*:*:*:* cpe:2.3:a:fortinet:fortiweb:7.0.4:*:*:*:*:*:*:* cpe:2.3:a:fortinet:fortiweb:7.0.3:*:*:*:*:*:*:* cpe:2.3:a:fortinet:fortiweb:7.0.2:*:*:*:*:*:*:* cpe:2.3:a:fortinet:fortiweb:7.0.1:*:*:*:*:*:*:* cpe:2.3:a:fortinet:fortiweb:7.0.0:*:*:*:*:*:*:* |
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CVE-2026-24515 (GCVE-0-2026-24515)
Vulnerability from cvelistv5 – Published: 2026-01-23 07:46 – Updated: 2026-06-02 13:01
VLAI
EPSS
VEX
Summary
In libexpat before 2.7.4, XML_ExternalEntityParserCreate does not copy unknown encoding handler user data.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-01-23 15:31 UTC
CWE
- CWE-476 - NULL Pointer Dereference
Assigner
mitre
CNA
References
Impacted products
2 products
| Vendor | Product | Version | |
|---|---|---|---|
| libexpat project | libexpat |
Affected:
0 , < 2.7.4
(semver)
cpe:2.3:a:libexpat_project:libexpat:*:*:*:*:*:*:*:* |
|
| Siemens | RUGGEDCOM RST2428P |
Affected:
0 , < V4.0
(custom)
|
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CVE-2026-24411 (GCVE-0-2026-24411)
Vulnerability from cvelistv5 – Published: 2026-01-24 01:16 – Updated: 2026-01-26 16:17
VLAI
EPSS
VEX
Title
iccDEV has Undefined Behavior and Null Pointer Deference in CIccTagXmlSegmentedCurve::ToXml()
Summary
iccDEV provides libraries and tools for interacting with, manipulating, and applying ICC color management profiles. Versions 2.3.1.1 and below have Undefined Behavior in CIccTagXmlSegmentedCurve::ToXml(). This occurs when user-controllable input is unsafely incorporated into ICC profile data or other structured binary blobs. Successful exploitation may allow an attacker to perform DoS, manipulate data, bypass application logic and Code Execution. This issue has been fixed in version 2.3.1.2.
Severity
7.1 (High)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-01-26 16:14 UTC
CWE
Assigner
GitHub_M
CNA
References
3 references
| URL | Tags |
|---|---|
| https://github.com/InternationalColorConsortium/i… | x_refsource_CONFIRM |
| https://github.com/InternationalColorConsortium/i… | x_refsource_MISC |
| https://github.com/InternationalColorConsortium/i… | x_refsource_MISC |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| InternationalColorConsortium | iccDEV |
Affected:
< 2.3.1.2
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}
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}
},
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CVE-2026-24410 (GCVE-0-2026-24410)
Vulnerability from cvelistv5 – Published: 2026-01-24 01:12 – Updated: 2026-01-26 16:17
VLAI
EPSS
VEX
Title
iccDEV has Undefined Behavior and Null Pointer Deference in CIccProfileXml::ParseBasic()
Summary
iccDEV provides libraries and tools for interacting with, manipulating, and applying ICC color management profiles. Versions 2.3.1.1 and below have Undefined Behavior and Null Pointer Deference in CIccProfileXml::ParseBasic(). This occurs when user-controllable input is unsafely incorporated into ICC profile data or other structured binary blobs. Successful exploitation may allow an attacker to perform DoS, manipulate data, bypass application logic and Code Execution. This issue has been fixed in version 2.3.1.2.
Severity
7.1 (High)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-01-26 16:14 UTC
CWE
Assigner
GitHub_M
CNA
References
3 references
| URL | Tags |
|---|---|
| https://github.com/InternationalColorConsortium/i… | x_refsource_CONFIRM |
| https://github.com/InternationalColorConsortium/i… | x_refsource_MISC |
| https://github.com/InternationalColorConsortium/i… | x_refsource_MISC |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| InternationalColorConsortium | iccDEV |
Affected:
< 2.3.1.2
|
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CVE-2026-24409 (GCVE-0-2026-24409)
Vulnerability from cvelistv5 – Published: 2026-01-24 01:09 – Updated: 2026-01-26 17:10
VLAI
EPSS
VEX
Title
iccDEV has Undefined Behavior and Null Pointer Deference in CIccTagXmlFloatNum<>::ParseXml()
Summary
iccDEV provides libraries and tools for interacting with, manipulating, and applying ICC color management profiles. Versions 2.3.1.1 and below have Undefined Behavior and Null Pointer Deference in CIccTagXmlFloatNum<>::ParseXml(). This occurs when user-controllable input is unsafely incorporated into ICC profile data or other structured binary blobs. Successful exploitation may allow an attacker to perform DoS, manipulate data, bypass application logic and Code Execution. This issue has been fixed in version 2.3.1.2.
Severity
7.1 (High)
SSVC
Exploitation: poc
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-01-26 17:09 UTC
CWE
Assigner
GitHub_M
CNA
References
3 references
| URL | Tags |
|---|---|
| https://github.com/InternationalColorConsortium/i… | x_refsource_CONFIRM |
| https://github.com/InternationalColorConsortium/i… | x_refsource_MISC |
| https://github.com/InternationalColorConsortium/i… | x_refsource_MISC |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| InternationalColorConsortium | iccDEV |
Affected:
< 2.3.1.2
|
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CVE-2026-24404 (GCVE-0-2026-24404)
Vulnerability from cvelistv5 – Published: 2026-01-24 00:55 – Updated: 2026-01-26 16:17
VLAI
EPSS
VEX
Title
iccDEV has Null Pointer Deference and Undefined Behavior in CIccXmlArrayType()
Summary
iccDEV provides libraries and tools for interacting with, manipulating, and applying ICC color management profiles. In versions 2.3.1.1 and below, CIccXmlArrayType() contains a Null Pointer Dereference and Undefined Behavior vulnerability. This occurs when user-controllable input is unsafely incorporated into ICC profile data or other structured binary blobs. Successful exploitation may allow an attacker to perform DoS, manipulate data, bypass application logic and Code Execution. This issue has been fixed in version 2.3.1.2.
Severity
7.1 (High)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-01-26 16:14 UTC
CWE
Assigner
GitHub_M
CNA
References
3 references
| URL | Tags |
|---|---|
| https://github.com/InternationalColorConsortium/i… | x_refsource_CONFIRM |
| https://github.com/InternationalColorConsortium/i… | x_refsource_MISC |
| https://github.com/InternationalColorConsortium/i… | x_refsource_MISC |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| InternationalColorConsortium | iccDEV |
Affected:
< 2.3.1.2
|
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CVE-2026-24293 (GCVE-0-2026-24293)
Vulnerability from cvelistv5 – Published: 2026-03-10 17:04 – Updated: 2026-06-19 18:18
VLAI
EPSS
VEX
Title
Windows Ancillary Function Driver for WinSock Elevation of Privilege Vulnerability
Summary
Null pointer dereference in Windows Ancillary Function Driver for WinSock allows an authorized attacker to elevate privileges locally.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-03-05 00:00 UTC
CWE
- CWE-476 - NULL Pointer Dereference
Assigner
microsoft
CNA
References
1 reference
| URL | Tags |
|---|---|
| https://msrc.microsoft.com/update-guide/vulnerabi… | vendor-advisorypatch |
Impacted products
11 products
| Vendor | Product | Version | |
|---|---|---|---|
| Microsoft | Windows 10 Version 21H2 |
Affected:
10.0.19044.0 , < 10.0.19044.7058
(custom)
|
|
| Microsoft | Windows 10 Version 22H2 |
Affected:
10.0.19045.0 , < 10.0.19045.7058
(custom)
|
|
| Microsoft | Windows 11 version 23H2 |
Affected:
10.0.22631.0 , < 10.0.22631.6783
(custom)
|
|
| Microsoft | Windows 11 Version 23H2 |
Affected:
10.0.22631.0 , < 10.0.22631.6783
(custom)
|
|
| Microsoft | Windows 11 Version 24H2 |
Affected:
10.0.26100.0 , < 10.0.26100.8037
(custom)
|
|
| Microsoft | Windows 11 Version 25H2 |
Affected:
10.0.26200.0 , < 10.0.26200.8037
(custom)
|
|
| Microsoft | Windows 11 version 26H1 |
Affected:
10.0.28000.0 , < 10.0.28000.1719
(custom)
|
|
| Microsoft | Windows Server 2022 |
Affected:
10.0.20348.0 , < 10.0.20348.4893
(custom)
|
|
| Microsoft | Windows Server 2022, 23H2 Edition (Server Core installation) |
Affected:
10.0.25398.0 , < 10.0.25398.2207
(custom)
|
|
| Microsoft | Windows Server 2025 |
Affected:
10.0.26100.0 , < 10.0.26100.32522
(custom)
|
|
| Microsoft | Windows Server 2025 (Server Core installation) |
Affected:
10.0.26100.0 , < 10.0.26100.32522
(custom)
|
Date Public
2026-03-10 14:00
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CVE-2026-24263 (GCVE-0-2026-24263)
Vulnerability from cvelistv5 – Published: 2026-08-25 16:11 – Updated: 2026-08-26 03:56
VLAI
EPSS
VEX
Summary
NVIDIA DGX Spark contains a vulnerability in the system firmware, where a privileged attacker could be able to cause a NULL pointer dereference. A successful exploit of this vulnerability may lead to code execution, escalation of privileges, denial of service, information disclosure, and data tampering.
Severity
8.2 (High)
SSVC
Exploitation: none
Automatable: no
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-08-25 00:00 UTC
CWE
- CWE-476 - NULL Pointer Dereference
Assigner
nvidia
CNA
References
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CVE-2026-23952 (GCVE-0-2026-23952)
Vulnerability from cvelistv5 – Published: 2026-01-22 00:32 – Updated: 2026-01-22 21:43
VLAI
EPSS
VEX
Title
ImageMagick has a NULL pointer dereference in MSL parser via <comment> tag before image load
Summary
ImageMagick is free and open-source software used for editing and manipulating digital images. Versions 14.10.1 and below have a NULL pointer dereference vulnerability in the MSL (Magick Scripting Language) parser when processing <comment> tags before images are loaded. This can lead to DoS attack due to assertion failure (debug builds) or NULL pointer dereference (release builds). This issue is fixed in version 14.10.2.
Severity
6.5 (Medium)
SSVC
Exploitation: poc
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-01-22 21:43 UTC
CWE
- CWE-476 - NULL Pointer Dereference
Assigner
GitHub_M
CNA
References
2 references
| URL | Tags |
|---|---|
| https://github.com/ImageMagick/ImageMagick/securi… | x_refsource_CONFIRM |
| https://github.com/dlemstra/Magick.NET/releases/t… | x_refsource_MISC |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| ImageMagick | ImageMagick |
Affected:
< 14.10.2
|
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CVE-2026-23948 (GCVE-0-2026-23948)
Vulnerability from cvelistv5 – Published: 2026-02-09 18:12 – Updated: 2026-02-10 16:02
VLAI
EPSS
VEX
Title
FreeRDP has a NULL Pointer Dereference in rdp_write_logon_info_v2()
Summary
FreeRDP is a free implementation of the Remote Desktop Protocol. Prior to 3.22.0, a NULL pointer dereference vulnerability in rdp_write_logon_info_v2() allows a malicious RDP server to crash FreeRDP proxy by sending a specially crafted LogonInfoV2 PDU with cbDomain=0 or cbUserName=0. This vulnerability is fixed in 3.22.0.
Severity
SSVC
Exploitation: none
Automatable: yes
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-02-10 15:40 UTC
CWE
- CWE-476 - NULL Pointer Dereference
Assigner
GitHub_M
CNA
References
2 references
| URL | Tags |
|---|---|
| https://github.com/FreeRDP/FreeRDP/security/advis… | x_refsource_CONFIRM |
| https://github.com/FreeRDP/FreeRDP/commit/4d44e3c… | x_refsource_MISC |
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"dateReserved": "2026-01-19T14:49:06.312Z",
"dateUpdated": "2026-02-10T16:02:38.268Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.2"
}
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.