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.
6314 vulnerabilities reference this CWE, most recent first.
CVE-2025-7007 (GCVE-0-2025-7007)
Vulnerability from cvelistv5 – Published: 2025-12-01 16:34 – Updated: 2025-12-01 17:08
VLAI
EPSS
VEX
Title
Null pointer dereference in Avast Antivirus on macOS (16.0.0) or Linux (3.0.3)
Summary
NULL Pointer Dereference vulnerability in Avast Antivirus on MacOS, Avast Anitvirus on Linux when scanning a malformed Windows PE file causes the antivirus process to crash.This issue affects Antivirus: 16.0.0; Anitvirus: 3.0.3.
Severity
7.5 (High)
SSVC
Exploitation: none
Automatable: no
Technical Impact: total
CISA Coordinator (v2.0.3)
CWE
- CWE-476 - NULL Pointer Dereference
Assigner
References
1 reference
Impacted products
Credits
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CVE-2025-6966 (GCVE-0-2025-6966)
Vulnerability from cvelistv5 – Published: 2025-12-05 12:59 – Updated: 2025-12-15 22:04
VLAI
EPSS
VEX
Title
Null-pointer dereference in python-apt TagSection.keys()
Summary
NULL pointer dereference in TagSection.keys() in python-apt on APT-based Linux systems allows a local attacker to cause a denial of service (process crash) via a crafted deb822 file with a malformed non-UTF-8 key.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
- CWE-476 - NULL Pointer Dereference
Assigner
References
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Canonical | python-apt |
Affected:
3.0 , < 3.0.0ubuntu1.1
(custom)
Affected: 3.0 , < 3.0.0ubuntu0.25.04.1 (custom) Affected: 2.7 , < 2.7.7ubuntu5.1 (custom) Affected: 2.4 , < 2.4.0ubuntu4.1 (custom) Affected: 2.0 , < 2.0.1ubuntu0.20.04.1+esm1 (custom) Affected: 1.6 , < 1.6.6ubuntu0.1~esm1 (custom) Affected: 1.1 , < 1.1.0~beta1ubuntu0.16.04.12+esm1 (custom) Affected: 0 , < 0.9.3.5ubuntu3+esm5 (custom) |
Date Public
2025-12-05 12:00
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CVE-2025-6858 (GCVE-0-2025-6858)
Vulnerability from cvelistv5 – Published: 2025-06-29 11:00 – Updated: 2025-06-30 20:11
VLAI
EPSS
VEX
Title
HDF5 H5Centry.c H5C__flush_single_entry null pointer dereference
Summary
A vulnerability was found in HDF5 1.14.6 and classified as problematic. Affected by this issue is the function H5C__flush_single_entry of the file src/H5Centry.c. The manipulation leads to null pointer dereference. The attack needs to be approached locally. The exploit has been disclosed to the public and may be used.
Severity
SSVC
Exploitation: poc
Automatable: no
Technical Impact: partial
CISA Coordinator (v2.0.3)
Assigner
References
5 references
| URL | Tags |
|---|---|
| https://vuldb.com/?id.314330 | vdb-entrytechnical-description |
| https://vuldb.com/?ctiid.314330 | signaturepermissions-required |
| https://vuldb.com/?submit.602530 | third-party-advisory |
| https://github.com/HDFGroup/hdf5/issues/5576 | issue-tracking |
| https://github.com/user-attachments/files/2062347… | exploit |
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CVE-2025-6496 (GCVE-0-2025-6496)
Vulnerability from cvelistv5 – Published: 2025-06-23 00:00 – Updated: 2025-06-23 13:06
VLAI
EPSS
VEX
Title
HTACG tidy-html5 parser.c InsertNodeAsParent null pointer dereference
Summary
A vulnerability was found in HTACG tidy-html5 5.8.0. It has been declared as problematic. This vulnerability affects the function InsertNodeAsParent of the file src/parser.c. The manipulation leads to null pointer dereference. Local access is required to approach this attack. The exploit has been disclosed to the public and may be used.
Severity
SSVC
Exploitation: poc
Automatable: no
Technical Impact: partial
CISA Coordinator (v2.0.3)
Assigner
References
5 references
| URL | Tags |
|---|---|
| https://vuldb.com/?id.313612 | vdb-entrytechnical-description |
| https://vuldb.com/?ctiid.313612 | signaturepermissions-required |
| https://vuldb.com/?submit.601007 | third-party-advisory |
| https://github.com/htacg/tidy-html5/issues/1141 | issue-tracking |
| https://github.com/user-attachments/files/1965294… | exploit |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| HTACG | tidy-html5 |
Affected:
5.8.0
|
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CVE-2025-6491 (GCVE-0-2025-6491)
Vulnerability from cvelistv5 – Published: 2025-07-13 22:10 – Updated: 2025-11-04 21:14
VLAI
EPSS
VEX
Title
NULL Pointer Dereference in PHP SOAP Extension via Large XML Namespace Prefix
Summary
In PHP versions:8.1.* before 8.1.33, 8.2.* before 8.2.29, 8.3.* before 8.3.23, 8.4.* before 8.4.10 when parsing XML data in SOAP extensions, overly large (>2Gb) XML namespace prefix may lead to null pointer dereference. This may lead to crashes and affect the availability of the target server.
Severity
5.9 (Medium)
SSVC
Exploitation: poc
Automatable: no
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
- CWE-476 - NULL Pointer Dereference
Assigner
References
Impacted products
Date Public
2025-07-03 12:27
Credits
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CVE-2025-6398 (GCVE-0-2025-6398)
Vulnerability from cvelistv5 – Published: 2025-08-01 08:49 – Updated: 2025-08-01 12:03
VLAI
EPSS
VEX
Summary
A null pointer dereference vulnerability exists in the IOMap64.sys driver of ASUS AI Suite 3. The vulnerability can be triggered by a specially crafted input, which may lead to a system crash (BSOD). Refer to the '
Security Update for for AI Suite 3
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Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
- CWE-476 - NULL Pointer Dereference
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://www.asus.com/content/security-advisory/ | vendor-advisory |
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CVE-2025-6395 (GCVE-0-2025-6395)
Vulnerability from cvelistv5 – Published: 2025-07-10 15:20 – Updated: 2026-07-14 12:39
VLAI
EPSS
VEX
Title
Gnutls: null pointer dereference in _gnutls_figure_common_ciphersuite()
Summary
A NULL pointer dereference flaw was found in the GnuTLS software in _gnutls_figure_common_ciphersuite().
Severity
6.5 (Medium)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
- CWE-476 - NULL Pointer Dereference
Assigner
References
15 references
Impacted products
15 products
| Vendor | Product | Version | |
|---|---|---|---|
|
Affected:
0 , < 3.8.10
(semver)
|
|||
| Red Hat | Red Hat Enterprise Linux 10 |
Unaffected:
0:3.8.9-9.el10_0.14 , < *
(rpm)
cpe:/o:redhat:enterprise_linux:10.0 |
|
| Red Hat | Red Hat Enterprise Linux 8 |
Unaffected:
0:3.6.16-8.el8_10.4 , < *
(rpm)
cpe:/a:redhat:enterprise_linux:8::appstream cpe:/o:redhat:enterprise_linux:8::baseos |
|
| Red Hat | Red Hat Enterprise Linux 9 |
Unaffected:
0:3.8.3-6.el9_6.2 , < *
(rpm)
cpe:/a:redhat:enterprise_linux:9::appstream cpe:/o:redhat:enterprise_linux:9::baseos |
|
| Red Hat | Red Hat Enterprise Linux 9.2 Update Services for SAP Solutions |
Unaffected:
0:3.7.6-21.el9_2.4 , < *
(rpm)
cpe:/a:redhat:rhel_e4s:9.2::appstream cpe:/o:redhat:rhel_e4s:9.2::baseos |
|
| Red Hat | Red Hat Enterprise Linux 9.4 Extended Update Support |
Unaffected:
0:3.8.3-4.el9_4.4 , < *
(rpm)
cpe:/a:redhat:rhel_eus:9.4::appstream cpe:/o:redhat:rhel_eus:9.4::baseos |
|
| Red Hat | Red Hat Ceph Storage 7 |
Unaffected:
7 , < *
(rpm)
cpe:/a:redhat:ceph_storage:7::el9 |
|
| Red Hat | Red Hat Discovery 2 |
Unaffected:
2.3.0-1760554384 , < *
(rpm)
cpe:/a:redhat:discovery:2::el9 |
|
| Red Hat | Red Hat Insights proxy 1.5 |
Unaffected:
1.5.7-1759331989 , < *
(rpm)
cpe:/a:redhat:insights_proxy:1.5::el9 |
|
| Red Hat | Red Hat Enterprise Linux 6 |
cpe:/o:redhat:enterprise_linux:6 |
|
| Red Hat | Red Hat Enterprise Linux 7 |
cpe:/o:redhat:enterprise_linux:7 |
|
| Red Hat | Red Hat OpenShift Container Platform 4 |
cpe:/a:redhat:openshift:4 |
|
| Siemens | SIMATIC S7-1500 CPU 1518-4 PN/DP MFP |
Affected:
V3.1.5 , < *
(custom)
|
|
| Siemens | SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP |
Affected:
V3.1.5 , < *
(custom)
|
|
| Siemens | SIPLUS S7-1500 CPU 1518-4 PN/DP MFP |
Affected:
V3.1.5 , < *
(custom)
|
Date Public
2025-07-10 07:56
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CVE-2025-6375 (GCVE-0-2025-6375)
Vulnerability from cvelistv5 – Published: 2025-06-21 00:31 – Updated: 2025-06-23 14:44
VLAI
EPSS
VEX
Title
poco MultipartReader.cpp MultipartInputStream null pointer dereference
Summary
A vulnerability was found in poco up to 1.14.1. It has been rated as problematic. Affected by this issue is the function MultipartInputStream of the file Net/src/MultipartReader.cpp. The manipulation leads to null pointer dereference. The attack needs to be approached locally. The exploit has been disclosed to the public and may be used. Upgrading to version 1.14.2 is able to address this issue. The patch is identified as 6f2f85913c191ab9ddfb8fae781f5d66afccf3bf. It is recommended to upgrade the affected component.
Severity
SSVC
Exploitation: poc
Automatable: no
Technical Impact: partial
CISA Coordinator (v2.0.3)
Assigner
References
7 references
| URL | Tags |
|---|---|
| https://vuldb.com/?id.313370 | vdb-entrytechnical-description |
| https://vuldb.com/?ctiid.313370 | signaturepermissions-required |
| https://vuldb.com/?submit.597446 | third-party-advisory |
| https://github.com/pocoproject/poco/issues/4915 | exploitissue-tracking |
| https://github.com/user-attachments/files/1952459… | exploit |
| https://github.com/pocoproject/poco/commit/6f2f85… | exploitpatch |
| https://github.com/pocoproject/poco/releases/tag/… | exploitpatch |
Impacted products
Credits
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CVE-2025-5867 (GCVE-0-2025-5867)
Vulnerability from cvelistv5 – Published: 2025-06-09 07:31 – Updated: 2025-06-09 18:07
VLAI
EPSS
VEX
Title
RT-Thread lwp_syscall.c csys_sendto null pointer dereference
Summary
A vulnerability classified as critical was found in RT-Thread 5.1.0. This vulnerability affects the function csys_sendto of the file rt-thread/components/lwp/lwp_syscall.c. The manipulation of the argument to leads to null pointer dereference.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: total
CISA Coordinator (v2.0.3)
Assigner
References
4 references
| URL | Tags |
|---|---|
| https://vuldb.com/?id.311626 | vdb-entrytechnical-description |
| https://vuldb.com/?ctiid.311626 | signaturepermissions-required |
| https://vuldb.com/?submit.584129 | third-party-advisory |
| https://github.com/RT-Thread/rt-thread/issues/10299 | issue-tracking |
Credits
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CVE-2025-4478 (GCVE-0-2025-4478)
Vulnerability from cvelistv5 – Published: 2025-05-16 14:22 – Updated: 2026-06-30 10:40
VLAI
EPSS
VEX
Title
Gnome-remote-desktop: freerdp: unauthenticated rdp packet causes segfault in freerdp leading to denial of service
Summary
A flaw was found in the FreeRDP used by Anaconda's remote install feature, where a crafted RDP packet could trigger a segmentation fault. This issue causes the service to crash and remain defunct, resulting in a denial of service. It occurs pre-boot and is likely due to a NULL pointer dereference. Rebooting is required to recover the system.
Severity
6.5 (Medium)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
- CWE-476 - NULL Pointer Dereference
Assigner
References
4 references
| URL | Tags |
|---|---|
| https://access.redhat.com/errata/RHSA-2025:9307 | vendor-advisoryx_refsource_REDHAT |
| https://access.redhat.com/security/cve/CVE-2025-4478 | vdb-entryx_refsource_REDHAT |
| https://bugzilla.redhat.com/show_bug.cgi?id=2365232 | issue-trackingx_refsource_REDHAT |
| https://github.com/FreeRDP/FreeRDP/pull/11573 |
Impacted products
4 products
| Vendor | Product | Version | |
|---|---|---|---|
|
Affected:
3.0.0-beta1 , < 3.16.0
(semver)
|
|||
| Red Hat | Red Hat Enterprise Linux 10 |
Unaffected:
2:3.10.3-3.el10_0 , < *
(rpm)
cpe:/o:redhat:enterprise_linux:10.0 |
|
| Red Hat | Red Hat Enterprise Linux 8 |
cpe:/o:redhat:enterprise_linux:8 |
|
| Red Hat | Red Hat Enterprise Linux 9 |
cpe:/o:redhat:enterprise_linux:9 |
Date Public
2025-05-13 05:14
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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.