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.

6700 vulnerabilities reference this CWE, most recent first.

CVE-2025-14631 (GCVE-0-2025-14631)

Vulnerability from cvelistv5 – Published: 2026-01-07 01:04 – Updated: 2026-01-07 13:46
VLAI
Title
Null Pointer Dereference Vulnerability in Malformed 802.11 Frame of TP-Link Archer BE400
Summary
A NULL Pointer Dereference vulnerability in TP-Link Archer BE400 V1(802.11 modules) allows  an adjacent attacker to cause a denial-of-service (DoS) by triggering a device reboot. This issue affects Archer BE400: xi 1.1.0 Build 20250710 rel.14914.
Severity
7.1 (High)
CVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N
SSVC
Exploitation: none Automatable: no Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-01-07 13:46 UTC
CWE
  • CWE-476 - NULL Pointer Dereference
Assigner
References
Impacted products
Vendor Product Version
TP-Link Systems Inc. Archer BE400 Affected: 0 , ≤ 1.1.0 Build 20250710 rel.14914 (custom)
Create a notification for this product.
Credits
Kari Hulkko of Black Duck Cybersecurity Research Center (CyRC)
Show details on NVD website
To clipboard 

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CVE-2025-14501 (GCVE-0-2025-14501)

Vulnerability from cvelistv5 – Published: 2025-12-23 21:18 – Updated: 2025-12-29 18:04
VLAI
Title
Sante PACS Server HTTP Content-Length Header Handling NULL Pointer Dereference Denial-of-Service Vulnerability
Summary
Sante PACS Server HTTP Content-Length Header Handling NULL Pointer Dereference Denial-of-Service Vulnerability. This vulnerability allows remote attackers to create a denial-of-service condition on affected installations of Sante PACS Server. Authentication is not required to exploit this vulnerability. The specific flaw exists within the handling of HTTP Content-Length header. The issue results from the lack of proper validation of a pointer prior to accessing it. An attacker can leverage this vulnerability to create a denial-of-service condition on the system. Was ZDI-CAN-26770.
Severity
7.5 (High)
CVSS:3.0/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 2025-12-29 18:04 UTC
CWE
  • CWE-476 - NULL Pointer Dereference
Assigner
References
Impacted products
Vendor Product Version
Sante PACS Server Affected: 4.2.2
Create a notification for this product.
Date Public
2025-12-17 16:13
Show details on NVD website
To clipboard 

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CVE-2025-14309 (GCVE-0-2025-14309)

Vulnerability from cvelistv5 – Published: 2025-12-09 07:49 – Updated: 2025-12-09 14:38
VLAI
Summary
NULL Pointer Dereference vulnerability in ravynsoft ravynos.This issue affects ravynos: through 0.5.2.
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 2025-12-09 14:38 UTC
CWE
  • CWE-476 - NULL Pointer Dereference
Assigner
References
Impacted products
Vendor Product Version
ravynsoft ravynos Affected: 0 , ≤ 0.5.2 (git)
Create a notification for this product.
Credits
TITAN Team (titancaproject@gmail.com)
Show details on NVD website
To clipboard 

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CVE-2025-14180 (GCVE-0-2025-14180)

Vulnerability from cvelistv5 – Published: 2025-12-27 19:21 – Updated: 2025-12-29 16:00
VLAI
Title
NULL Pointer Dereference in PDO quoting
Summary
In PHP versions 8.1.* before 8.1.34, 8.2.* before 8.2.30, 8.3.* before 8.3.29, 8.4.* before 8.4.16, 8.5.* before 8.5.1 when using the PDO PostgreSQL driver with PDO::ATTR_EMULATE_PREPARES enabled, an invalid character sequence (such as \x99) in a prepared statement parameter may cause the quoting function PQescapeStringConn to return NULL, leading to a null pointer dereference in pdo_parse_params() function. This may lead to crashes (segmentation fault) and affect the availability of the target server.
Severity
8.2 (High)
CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N
SSVC
Exploitation: poc Automatable: no Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2025-12-29 15:59 UTC
CWE
  • CWE-476 - NULL Pointer Dereference
Assigner
References
Impacted products
Vendor Product Version
PHP Group PHP Affected: 8.1.* , < 8.1.34 (semver)
Affected: 8.2.* , < 8.2.30 (semver)
Affected: 8.3.* , < 8.3.29 (semver)
Affected: 8.4.* , < 8.4.16 (semver)
Affected: 8.5.* , < 8.5.1 (semver)
Create a notification for this product.
Date Public
2025-12-18 00:00
Credits
Aleksey Solovev (Positive Technologies)
Show details on NVD website
To clipboard 

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CVE-2025-13425 (GCVE-0-2025-13425)

Vulnerability from cvelistv5 – Published: 2025-11-20 15:30 – Updated: 2025-11-20 16:24
VLAI
Title
Denial of Service in OSV-SCALIBR
Summary
A bug in the filesystem traversal fallback path causes fs/diriterate/diriterate.go:Next() to overindex an empty slice when ReadDir returns nil for an empty directory, resulting in a panic (index out of range) and an application crash (denial of service) in OSV-SCALIBR.
Severity
1.9 (Low)
CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:L/E:P
SSVC
Exploitation: none Automatable: no Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2025-11-20 16:24 UTC
CWE
  • CWE-476 - NULL Pointer Dereference
Assigner
References
Impacted products
Vendor Product Version
Google OSV-SCALIBR Affected: < 0.3.4
Create a notification for this product.
Credits
Yuvraj Saxena
Show details on NVD website
To clipboard 

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CVE-2025-13406 (GCVE-0-2025-13406)

Vulnerability from cvelistv5 – Published: 2026-03-17 14:32 – Updated: 2026-03-27 08:09
VLAI
Title
Scanning for higher HART revision device leads into NULL pointer dereference in live list
Summary
NULL Pointer Dereference vulnerability in Softing Industrial Automation GmbH smartLink SW-HT (Webserver modules) allows HTTP DoS.This issue affects smartLink SW-HT: 1.43.
Severity
6.8 (Medium)
CVSS:4.0/AV:N/AC:L/AT:P/PR:H/UI:A/VC:N/VI:N/VA:H/SC:N/SI:N/SA:H/AU:Y/R:A/RE:L/U:Red
SSVC
Exploitation: none Automatable: no Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-03-17 14:49 UTC
CWE
  • CWE-476 - NULL Pointer Dereference
Assigner
References
Impacted products
Vendor Product Version
Softing smartLink SW-HT Affected: 1.43 (custom)
Unaffected: 1.43.1 (custom)
    cpe:2.3:a:softing:smartlink_sw-ht:1.43:*:*:*:*:*:*:*
Create a notification for this product.
Show details on NVD website
To clipboard 

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CVE-2025-13397 (GCVE-0-2025-13397)

Vulnerability from cvelistv5 – Published: 2025-11-19 15:32 – Updated: 2025-11-19 16:48 X_Open Source
VLAI
Title
mrubyc alloc.c mrbc_raw_realloc null pointer dereference
Summary
A security vulnerability has been detected in mrubyc up to 3.4. This impacts the function mrbc_raw_realloc of the file src/alloc.c. Such manipulation of the argument ptr leads to null pointer dereference. An attack has to be approached locally. The name of the patch is 009111904807b8567262036bf45297c3da8f1c87. It is advisable to implement a patch to correct 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:X
3.3 (Low)
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L/E:X/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:X/RL:O/RC:C
SSVC
Exploitation: none Automatable: no Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2025-11-19 16:46 UTC
CWE
Assigner
References
Impacted products
Vendor Product Version
n/a mrubyc Affected: 3.0
Affected: 3.1
Affected: 3.2
Affected: 3.3
Affected: 3.4
Credits
micromilo (VulDB User)
Show details on NVD website
To clipboard 

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CVE-2025-12207 (GCVE-0-2025-12207)

Vulnerability from cvelistv5 – Published: 2025-10-27 02:32 – Updated: 2026-02-24 07:04 Disputed
VLAI
Title
Kamailio Grammar Rule cfg.y yyerror_at null pointer dereference
Summary
A vulnerability has been found in Kamailio 5.5. This affects the function yyerror_at of the file src/core/cfg.y of the component Grammar Rule Handler. Such manipulation leads to null pointer dereference. The attack needs to be performed locally. The exploit has been disclosed to the public and may be used. The actual existence of this vulnerability is currently in question. This attack requires manipulating config files which might not be a realistic scenario in many cases. The vendor was contacted early about this disclosure but did not respond in any way.
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:X/RC:R
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:X/RC:R
SSVC
Exploitation: poc Automatable: no Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2025-10-28 13:59 UTC
CWE
Assigner
References
Impacted products
Vendor Product Version
n/a Kamailio Affected: 5.5
    cpe:2.3:a:kamailio:kamailio:*:*:*:*:*:*:*:*
Credits
zh_vul (VulDB User) VulDB
Show details on NVD website
To clipboard 

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CVE-2025-12206 (GCVE-0-2025-12206)

Vulnerability from cvelistv5 – Published: 2025-10-27 02:32 – Updated: 2026-02-24 07:04 Disputed
VLAI
Title
Kamailio rvalue.c rve_is_constant null pointer dereference
Summary
A flaw has been found in Kamailio 5.5. The impacted element is the function rve_is_constant of the file src/core/rvalue.c. This manipulation causes null pointer dereference. The attack needs to be launched locally. The exploit has been published and may be used. It is still unclear if this vulnerability genuinely exists. This attack requires manipulating config files which might not be a realistic scenario in many cases. The vendor was contacted early about this disclosure but did not respond in any way.
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:X/RC:R
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:X/RC:R
SSVC
Exploitation: poc Automatable: no Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2025-10-28 14:00 UTC
CWE
Assigner
References
Impacted products
Vendor Product Version
n/a Kamailio Affected: 5.5
    cpe:2.3:a:kamailio:kamailio:*:*:*:*:*:*:*:*
Credits
zh_vul (VulDB User) VulDB
Show details on NVD website
To clipboard 

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CVE-2025-11848 (GCVE-0-2025-11848)

Vulnerability from cvelistv5 – Published: 2026-02-24 02:14 – Updated: 2026-02-24 20:25
VLAI
Summary
A null pointer dereference vulnerability in the Wake-on-LAN CGI program of the Zyxel VMG3625-T50B firmware version through 5.50(ABPM.9.6)C0 and the Zyxel WX3100-T0 firmware versions through 5.50(ABVL.4.8)C0 could allow an authenticated attacker with administrator privileges to trigger a denial-of-service (DoS) condition by sending a crafted HTTP request.
Severity
4.9 (Medium)
CVSS:3.1/AV:N/AC:L/PR:H/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 2026-02-24 20:24 UTC
CWE
  • CWE-476 - NULL Pointer Dereference
Assigner
References
Impacted products
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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