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.
6607 vulnerabilities reference this CWE, most recent first.
CVE-2022-23476 (GCVE-0-2022-23476)
Vulnerability from cvelistv5 – Published: 2022-12-08 03:03 – Updated: 2025-04-23 16:31
VLAI
EPSS
VEX
Title
Unchecked return value from xmlTextReaderExpand in Nokogiri
Summary
Nokogiri is an open source XML and HTML library for the Ruby programming language. Nokogiri `1.13.8` and `1.13.9` fail to check the return value from `xmlTextReaderExpand` in the method `Nokogiri::XML::Reader#attribute_hash`. This can lead to a null pointer exception when invalid markup is being parsed. For applications using `XML::Reader` to parse untrusted inputs, this may potentially be a vector for a denial of service attack. Users are advised to upgrade to Nokogiri `>= 1.13.10`. Users may be able to search their code for calls to either `XML::Reader#attributes` or `XML::Reader#attribute_hash` to determine if they are affected.
Severity
7.5 (High)
SSVC
Exploitation: none
Automatable: yes
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2025-04-23 15:48 UTC
Assigner
References
3 references
| URL | Tags |
|---|---|
| https://github.com/sparklemotion/nokogiri/securit… | x_refsource_CONFIRM |
| https://github.com/sparklemotion/nokogiri/commit/… | x_refsource_MISC |
| https://github.com/sparklemotion/nokogiri/commit/… | x_refsource_MISC |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| sparklemotion | nokogiri |
Affected:
>= 1.13.8, < 1.13.10
|
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CVE-2022-23199 (GCVE-0-2022-23199)
Vulnerability from cvelistv5 – Published: 2022-02-16 16:38 – Updated: 2025-04-23 19:03
VLAI
EPSS
VEX
Title
Adobe Illustrator NULL Pointer Dereference Application denial-of-service
Summary
Adobe Illustrator versions 25.4.3 (and earlier) and 26.0.2 (and earlier) are affected by a Null pointer dereference vulnerability. An unauthenticated attacker could leverage this vulnerability to achieve an application denial-of-service in the context of the current user. 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 2025-04-23 13:08 UTC
CWE
- CWE-476 - NULL Pointer Dereference (CWE-476)
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://helpx.adobe.com/security/products/illustr… | x_refsource_MISC |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Adobe | Illustrator |
Affected:
unspecified , ≤ 25.4.3
(custom)
Affected: unspecified , ≤ 26.0.2 (custom) Affected: unspecified , ≤ None (custom) |
Date Public
2022-02-08 00:00
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CVE-2022-23198 (GCVE-0-2022-23198)
Vulnerability from cvelistv5 – Published: 2022-02-16 16:38 – Updated: 2025-04-23 19:03
VLAI
EPSS
VEX
Title
Adobe Illustrator NULL Pointer Dereference Application denial-of-service
Summary
Adobe Illustrator versions 25.4.3 (and earlier) and 26.0.2 (and earlier) are affected by a Null pointer dereference vulnerability. An unauthenticated attacker could leverage this vulnerability to achieve an application denial-of-service in the context of the current user. 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 2025-04-23 13:08 UTC
CWE
- CWE-476 - NULL Pointer Dereference (CWE-476)
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://helpx.adobe.com/security/products/illustr… | x_refsource_MISC |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Adobe | Illustrator |
Affected:
unspecified , ≤ 25.4.3
(custom)
Affected: unspecified , ≤ 26.0.2 (custom) Affected: unspecified , ≤ None (custom) |
Date Public
2022-02-08 00:00
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CVE-2022-23189 (GCVE-0-2022-23189)
Vulnerability from cvelistv5 – Published: 2022-02-16 16:38 – Updated: 2025-04-23 19:04
VLAI
EPSS
VEX
Title
Adobe Illustrator NULL Pointer Dereference Application denial-of-service
Summary
Adobe Illustrator versions 25.4.3 (and earlier) and 26.0.2 (and earlier) are affected by a Null pointer dereference vulnerability. An unauthenticated attacker could leverage this vulnerability to achieve an application denial-of-service in the context of the current user. 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 2025-04-23 13:08 UTC
CWE
- CWE-476 - NULL Pointer Dereference (CWE-476)
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://helpx.adobe.com/security/products/illustr… | x_refsource_MISC |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Adobe | Illustrator |
Affected:
unspecified , ≤ 25.4.3
(custom)
Affected: unspecified , ≤ 26.0.2 (custom) Affected: unspecified , ≤ None (custom) |
Date Public
2022-02-08 00:00
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CVE-2022-23025 (GCVE-0-2022-23025)
Vulnerability from cvelistv5 – Published: 2022-01-25 19:11 – Updated: 2024-08-03 03:28
VLAI
EPSS
VEX
Summary
On BIG-IP version 16.1.x before 16.1.1, 15.1.x before 15.1.4, 14.1.x before 14.1.4.4, and all versions of 13.1.x, when a SIP ALG profile is configured on a virtual server, undisclosed requests can cause the Traffic Management Microkernel (TMM) to terminate. Note: Software versions which have reached End of Technical Support (EoTS) are not evaluated.
Severity
No CVSS data available.
CWE
- CWE-476 - NULL Pointer Dereference
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://support.f5.com/csp/article/K44110411 | x_refsource_MISC |
Impacted products
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CVE-2022-23022 (GCVE-0-2022-23022)
Vulnerability from cvelistv5 – Published: 2022-01-25 19:11 – Updated: 2024-08-03 03:28
VLAI
EPSS
VEX
Summary
On BIG-IP version 16.1.x before 16.1.2, when an HTTP profile is configured on a virtual server, undisclosed requests can cause the Traffic Management Microkernel (TMM) to terminate. Note: Software versions which have reached End of Technical Support (EoTS) are not evaluated.
Severity
No CVSS data available.
CWE
- CWE-476 - NULL Pointer Dereference
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://support.f5.com/csp/article/K96924184 | x_refsource_MISC |
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CVE-2022-23021 (GCVE-0-2022-23021)
Vulnerability from cvelistv5 – Published: 2022-01-25 19:11 – Updated: 2024-08-03 03:28
VLAI
EPSS
VEX
Summary
On BIG-IP version 16.1.x before 16.1.2, when any of the following configurations are configured on a virtual server, undisclosed requests can cause the Traffic Management Microkernel (TMM) to terminate: HTTP redirect rule in an LTM policy, BIG-IP APM Access Profile, and Explicit HTTP Proxy in HTTP Profile. Note: Software versions which have reached End of Technical Support (EoTS) are not evaluated.
Severity
No CVSS data available.
CWE
- CWE-476 - NULL Pointer Dereference
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://support.f5.com/csp/article/K57111075 | x_refsource_MISC |
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CVE-2022-23020 (GCVE-0-2022-23020)
Vulnerability from cvelistv5 – Published: 2022-01-25 19:11 – Updated: 2024-08-03 03:28
VLAI
EPSS
VEX
Summary
On BIG-IP version 16.1.x before 16.1.2, when the 'Respond on Error' setting is enabled on the Request Logging profile and configured on a virtual server, undisclosed requests can cause the Traffic Management Microkernel (TMM) to terminate. Note: Software versions which have reached End of Technical Support (EoTS) are not evaluated.
Severity
No CVSS data available.
CWE
- CWE-476 - NULL Pointer Dereference
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://support.f5.com/csp/article/K17514331 | x_refsource_MISC |
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CVE-2022-23017 (GCVE-0-2022-23017)
Vulnerability from cvelistv5 – Published: 2022-01-25 19:11 – Updated: 2024-08-03 03:28
VLAI
EPSS
VEX
Summary
On BIG-IP version 16.x before 16.1.0, 15.1.x before 15.1.4.1, 14.1.x before 14.1.4.5, and all versions of 13.1.x, when a virtual server is configured with a DNS profile with the Rapid Response Mode setting enabled and is configured on a BIG-IP system, undisclosed requests can cause the Traffic Management Microkernel (TMM) to terminate. Note: Software versions which have reached End of Technical Support (EoTS) are not evaluated.
Severity
No CVSS data available.
CWE
- CWE-476 - NULL Pointer Dereference
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://support.f5.com/csp/article/K28042514 | x_refsource_MISC |
Impacted products
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CVE-2022-23016 (GCVE-0-2022-23016)
Vulnerability from cvelistv5 – Published: 2022-01-25 19:11 – Updated: 2024-08-03 03:28
VLAI
EPSS
VEX
Summary
On versions 16.1.x before 16.1.2 and 15.1.x before 15.1.4.1, when BIG-IP SSL Forward Proxy with TLS 1.3 is configured on a virtual server, undisclosed requests can cause the Traffic Management Microkernel (TMM) to terminate. Note: Software versions which have reached End of Technical Support (EoTS) are not evaluated.
Severity
No CVSS data available.
CWE
- CWE-476 - NULL Pointer Dereference
Assigner
References
1 reference
| URL | Tags |
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| https://support.f5.com/csp/article/K91013510 | 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.