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.
6310 vulnerabilities reference this CWE, most recent first.
CVE-2025-8114 (GCVE-0-2025-8114)
Vulnerability from cvelistv5 – Published: 2025-07-24 14:14 – Updated: 2026-06-30 01:50
VLAI
EPSS
VEX
Title
Libssh: null pointer dereference in libssh kex session id calculation
Summary
A flaw was found in libssh, a library that implements the SSH protocol. When calculating the session ID during the key exchange (KEX) process, an allocation failure in cryptographic functions may lead to a NULL pointer dereference. This issue can cause the client or server to crash.
Severity
4.7 (Medium)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
- CWE-476 - NULL Pointer Dereference
Assigner
References
6 references
| URL | Tags |
|---|---|
| https://access.redhat.com/errata/RHSA-2026:18683 | vendor-advisoryx_refsource_REDHAT |
| https://access.redhat.com/security/cve/CVE-2025-8114 | vdb-entryx_refsource_REDHAT |
| https://bugzilla.redhat.com/show_bug.cgi?id=2383220 | issue-trackingx_refsource_REDHAT |
| https://git.libssh.org/projects/libssh.git/commit… | |
| https://git.libssh.org/projects/libssh.git/commit… | |
| https://www.libssh.org/security/advisories/CVE-20… |
Impacted products
7 products
| Vendor | Product | Version | |
|---|---|---|---|
|
Affected:
0 , < 0.11.3
(semver)
|
|||
| Red Hat | Red Hat Enterprise Linux 9 |
Unaffected:
0:0.10.4-18.el9 , < *
(rpm)
cpe:/a:redhat:enterprise_linux:9::appstream cpe:/o:redhat:enterprise_linux:9::baseos |
|
| Red Hat | Red Hat Enterprise Linux 10 |
cpe:/o:redhat:enterprise_linux:10 |
|
| 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 Enterprise Linux 8 |
cpe:/o:redhat:enterprise_linux:8 |
|
| Red Hat | Red Hat OpenShift Container Platform 4 |
cpe:/a:redhat:openshift:4 |
Date Public
2025-07-24 00:00
Credits
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CVE-2025-8090 (GCVE-0-2025-8090)
Vulnerability from cvelistv5 – Published: 2026-01-13 16:36 – Updated: 2026-01-13 21:41
VLAI
EPSS
VEX
Title
Vulnerability in the QNX Neutrino Kernel impacts the QNX Software Development Platform and QNX OS for Safety
Summary
Null pointer dereference in the MsgRegisterEvent() system call could allow an attacker with local access and code execution abilities to crash the QNX Neutrino kernel.
Severity
6.2 (Medium)
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://support.blackberry.com/pkb/s/article/141027 | vendor-advisory |
Impacted products
3 products
| Vendor | Product | Version | |
|---|---|---|---|
| BlackBerry Ltd | QNX Software Development Platform |
Affected:
7.1 and 7.0
(custom)
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|
| BlackBerry Ltd | QNX OS for Safety |
Affected:
2.2.7 and earlier
(custom)
Affected: cpe:2.3:o:blackberry:qnx_os_for_safety:2.2:7:*:*:*:*:*:* (cpe) Affected: 2.1.4 and earlier (custom) Affected: cpe:2.3:o:blackberry:qnx_os_for_safety:2.1:4:*:*:*:*:*:* (cpe) Affected: 2.0.2 and earlier (custom) Affected: cpe:2.3:o:blackberry:qnx_os_for_safety:2.0:2:*:*:*:*:*:* (cpe) |
|
| BlackBerry Ltd. | QNX OS for Medical |
Affected:
2.0.1 and earlier
(custom)
Affected: cpe:2.3:o:blackberry:qnx_os_for_medical:2.0:1:*:*:*:*:*:* (cpe) |
Date Public
2026-01-13 16:25
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CVE-2025-7797 (GCVE-0-2025-7797)
Vulnerability from cvelistv5 – Published: 2025-07-18 17:44 – Updated: 2025-07-18 18:04
VLAI
EPSS
VEX
Title
GPAC dash_client.c gf_dash_download_init_segment null pointer dereference
Summary
A vulnerability was found in GPAC up to 2.4. It has been rated as problematic. Affected by this issue is the function gf_dash_download_init_segment of the file src/media_tools/dash_client.c. The manipulation of the argument base_init_url leads to null pointer dereference. The attack may be launched remotely. The exploit has been disclosed to the public and may be used. The patch is identified as 153ea314b6b053db17164f8bc3c7e1e460938eaa. It is recommended to apply a patch to fix this issue.
Severity
SSVC
Exploitation: poc
Automatable: yes
Technical Impact: partial
CISA Coordinator (v2.0.3)
Assigner
References
5 references
| URL | Tags |
|---|---|
| https://vuldb.com/?id.316862 | vdb-entrytechnical-description |
| https://vuldb.com/?ctiid.316862 | signaturepermissions-required |
| https://vuldb.com/?submit.616664 | third-party-advisory |
| https://drive.google.com/file/d/1Z-C6RajpZ40ujo1i… | exploit |
| https://github.com/gpac/gpac/commit/153ea314b6b05… | patch |
Impacted products
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CVE-2025-7700 (GCVE-0-2025-7700)
Vulnerability from cvelistv5 – Published: 2025-11-07 18:59 – Updated: 2026-05-06 14:38
VLAI
EPSS
VEX
Title
Ffmpeg: null pointer dereference in ffmpeg als decoder (libavcodec/alsdec.c)
Summary
A flaw was found in FFmpeg’s ALS audio decoder, where it does not properly check for memory allocation failures. This can cause the application to crash when processing certain malformed audio files. While it does not lead to data theft or system control, it can be used to disrupt services and cause a denial of service.
Severity
5.3 (Medium)
SSVC
Exploitation: none
Automatable: yes
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
- CWE-476 - NULL Pointer Dereference
Assigner
References
3 references
| URL | Tags |
|---|---|
| https://access.redhat.com/security/cve/CVE-2025-7700 | vdb-entryx_refsource_REDHAT |
| https://bugzilla.redhat.com/show_bug.cgi?id=2380420 | issue-trackingx_refsource_REDHAT |
| https://github.com/FFmpeg/FFmpeg/commit/35a6de137… |
Date Public
2025-07-15 00:00
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CVE-2025-7462 (GCVE-0-2025-7462)
Vulnerability from cvelistv5 – Published: 2025-07-12 05:32 – Updated: 2025-11-03 17:45
VLAI
EPSS
VEX
Title
Artifex GhostPDL New Output File Open Error gdevpdf.c pdf_ferror null pointer dereference
Summary
A vulnerability was found in Artifex GhostPDL up to 3989415a5b8e99b9d1b87cc9902bde9b7cdea145. It has been classified as problematic. This affects the function pdf_ferror of the file devices/vector/gdevpdf.c of the component New Output File Open Error Handler. The manipulation leads to null pointer dereference. It is possible to initiate the attack remotely. The identifier of the patch is 619a106ba4c4abed95110f84d5efcd7aee38c7cb. It is recommended to apply a patch to fix this issue.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator (v2.0.3)
Assigner
References
6 references
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|---|---|
| https://vuldb.com/?id.316113 | vdb-entrytechnical-description |
| https://vuldb.com/?ctiid.316113 | signaturepermissions-required |
| https://vuldb.com/?submit.610173 | third-party-advisory |
| https://cgit.ghostscript.com/cgi-bin/cgit.cgi/gho… | patch |
| https://artifex.com/ | product |
| https://lists.debian.org/debian-lts-announce/2025… |
Impacted products
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CVE-2025-7209 (GCVE-0-2025-7209)
Vulnerability from cvelistv5 – Published: 2025-07-09 01:02 – Updated: 2025-07-09 17:04
VLAI
EPSS
VEX
Title
9fans plan9port x509.c value_decode null pointer dereference
Summary
A vulnerability has been found in 9fans plan9port up to 9da5b44 and classified as problematic. Affected by this vulnerability is the function value_decode in the library src/libsec/port/x509.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. This product takes the approach of rolling releases to provide continious delivery. Therefore, version details for affected and updated releases are not available. The identifier of the patch is deae8939583d83fd798fca97665e0e94656c3ee8. It is recommended to apply a patch to fix this issue.
Severity
SSVC
Exploitation: poc
Automatable: no
Technical Impact: partial
CISA Coordinator (v2.0.3)
Assigner
References
7 references
| URL | Tags |
|---|---|
| https://vuldb.com/?id.315157 | vdb-entrytechnical-description |
| https://vuldb.com/?ctiid.315157 | signaturepermissions-required |
| https://vuldb.com/?submit.607685 | third-party-advisory |
| https://github.com/9fans/plan9port/issues/711 | issue-tracking |
| https://github.com/9fans/plan9port/issues/711#iss… | issue-tracking |
| https://github.com/user-attachments/files/1969836… | exploit |
| https://git.9front.org/plan9front/plan9front/deae… | patch |
Credits
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CVE-2025-7018 (GCVE-0-2025-7018)
Vulnerability from cvelistv5 – Published: 2026-06-12 22:13 – Updated: 2026-06-15 16:01
VLAI
EPSS
VEX
Title
Avira antivirus engine null pointer dereference when scanning a malformed PE file
Summary
Null pointer dereference vulnerability in Avira Antivirus engine when scanning a malformed Windows PE file may allow Denial-of-Service of the antivirus engine process.
This issue affects Avira Antivirus on Windows, macOS, and Linux for engine builds before 8.3.70.64.
Severity
5.5 (Medium)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
- CWE-476 - NULL Pointer Dereference
Assigner
References
1 reference
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Gen Digital | Avira Antivirus |
Affected:
0 , < 8.3.70.64
(custom)
|
Date Public
2025-01-31 11:34
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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
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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
Credits
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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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"url": "https://vuldb.com/?id.314330"
},
{
"name": "VDB-314330 | CTI Indicators (IOB, IOC, IOA)",
"tags": [
"signature",
"permissions-required"
],
"url": "https://vuldb.com/?ctiid.314330"
},
{
"name": "Submit #602530 | HDFGroup HDF5 hdf5 1.14.6 (commit 17c16b6) NULL Pointer Dereference",
"tags": [
"third-party-advisory"
],
"url": "https://vuldb.com/?submit.602530"
},
{
"tags": [
"issue-tracking"
],
"url": "https://github.com/HDFGroup/hdf5/issues/5576"
},
{
"tags": [
"exploit"
],
"url": "https://github.com/user-attachments/files/20623475/hdf5_crash_8.txt"
}
],
"timeline": [
{
"lang": "en",
"time": "2025-06-28T00:00:00.000Z",
"value": "Advisory disclosed"
},
{
"lang": "en",
"time": "2025-06-28T02:00:00.000Z",
"value": "VulDB entry created"
},
{
"lang": "en",
"time": "2025-06-28T12:48:06.000Z",
"value": "VulDB entry last update"
}
],
"title": "HDF5 H5Centry.c H5C__flush_single_entry null pointer dereference"
}
},
"cveMetadata": {
"assignerOrgId": "1af790b2-7ee1-4545-860a-a788eba489b5",
"assignerShortName": "VulDB",
"cveId": "CVE-2025-6858",
"datePublished": "2025-06-29T11:00:14.487Z",
"dateReserved": "2025-06-28T10:42:56.282Z",
"dateUpdated": "2025-06-30T20:11:40.651Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.1"
}
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.