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-2026-111144 (GCVE-0-2026-111144)
Vulnerability from cvelistv5 – Published: 2026-10-15 18:57 – Updated: 2026-10-26 14:02
VLAI
EPSS
VEX
Title
libansilove 1.3.0 through 1.4.2 NULL Pointer Dereference via ansilove_xbin
Summary
libansilove 1.3.0 through 1.4.2 contains a NULL pointer dereference vulnerability in ansilove_xbin() that allows attackers to crash applications by supplying a crafted XBIN file. Attackers can set the 512-character flag without the custom-font flag, causing drawchar() to index a NULL high_font_data_xbin pointer and terminate the process.
Severity
5.5 (Medium)
SSVC
Exploitation: poc
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-10-26 14:02 UTC
CWE
- CWE-476 - NULL Pointer Dereference
Assigner
VulnCheck
CNA
References
6 references
| URL | Tags |
|---|---|
| https://hackmd.io/@haind-pwn/libansilove-xbin-rle… | technical-descriptionexploit |
| https://github.com/ansilove/libansilove/blob/f1b0… | technical-description |
| https://github.com/ansilove/libansilove/blob/f1b0… | technical-description |
| https://github.com/ansilove/libansilove/blob/f1b0… | technical-description |
| https://github.com/ansilove/libansilove | product |
| https://www.vulncheck.com/advisories/libansilove-… | third-party-advisory |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| ansilove | libansilove |
Affected:
1.3.0 , ≤ 1.4.2
(semver)
cpe:2.3:a:ansilove:libansilove:*:*:*:*:*:*:*:* |
Date Public
2026-10-15 00:00
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CVE-2026-111129 (GCVE-0-2026-111129)
Vulnerability from cvelistv5 – Published: 2026-10-15 18:57 – Updated: 2026-10-26 14:09
VLAI
EPSS
VEX
Title
Assimp through 6.0.5 NULL Pointer Dereference via Ogre Animation Track
Summary
Open Asset Import Library (assimp) through 6.0.5 contains a NULL pointer dereference vulnerability in the Ogre3D binary mesh importer's OgreBinarySerializer::ReadAnimationKeyFrames() handling of unvalidated animation track targets. Attackers can supply a crafted .mesh file with a morph animation track targeting a missing submesh or absent shared geometry to crash the host process.
Severity
5.5 (Medium)
SSVC
Exploitation: poc
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-10-26 14:09 UTC
CWE
- CWE-476 - NULL Pointer Dereference
Assigner
VulnCheck
CNA
References
5 references
| URL | Tags |
|---|---|
| https://hackmd.io/@haind-pwn/assimp-ogre-mesh-bon… | technical-description |
| https://github.com/assimp/assimp/blob/392a658f9c2… | technical-description |
| https://github.com/assimp/assimp/blob/392a658f9c2… | technical-description |
| https://github.com/assimp/assimp | product |
| https://www.vulncheck.com/advisories/assimp-throu… | third-party-advisory |
Impacted products
Date Public
2026-10-15 00:00
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CVE-2026-111128 (GCVE-0-2026-111128)
Vulnerability from cvelistv5 – Published: 2026-10-15 18:57 – Updated: 2026-10-15 19:45
VLAI
EPSS
VEX
Title
Assimp through 6.0.5 NULL Pointer Dereference via Ogre Importer Bone Assignment
Summary
Assimp through 6.0.5 contains a NULL pointer dereference vulnerability in the Ogre3D importer that allows attackers to crash applications via unvalidated bone indices in OgreStructs.cpp. Attackers can supply a crafted .mesh and .skeleton file referencing a missing bone, causing BoneById() to return null and crash the host process.
Severity
5.5 (Medium)
SSVC
Exploitation: poc
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-10-15 19:45 UTC
CWE
- CWE-476 - NULL Pointer Dereference
Assigner
VulnCheck
CNA
References
5 references
| URL | Tags |
|---|---|
| https://hackmd.io/@haind-pwn/assimp-ogre-mesh-bon… | technical-description |
| https://github.com/assimp/assimp/blob/392a658f9c2… | technical-description |
| https://github.com/assimp/assimp/blob/392a658f9c2… | technical-description |
| https://github.com/assimp/assimp | product |
| https://www.vulncheck.com/advisories/assimp-throu… | third-party-advisory |
Impacted products
Date Public
2026-10-15 00:00
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CVE-2026-111107 (GCVE-0-2026-111107)
Vulnerability from cvelistv5 – Published: 2026-10-27 15:52 – Updated: 2026-11-04 20:27
VLAI
EPSS
VEX
Title
Fireware OS NULL Pointer Dereference in Management Interface Allows Unauthenticated Denial of Service
Summary
A NULL pointer dereference vulnerability in WatchGuard Fireware OS’s management interface allows a remote, unauthenticated attacker with network access to the management interface to crash the management service by sending a specially crafted login request. Repeated exploitation terminates all active administrator sessions and in-progress management operations and can prevent management of the device. Traffic processing is not affected.
Severity
SSVC
Exploitation: none
Automatable: yes
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-11-04 19:10 UTC
Assigner
WatchGuard
CNA
References
1 reference
| URL | Tags |
|---|---|
| https://psirt.watchguard.com/CVE-2026-111107 | vendor-advisory |
Impacted products
2 products
| Vendor | Product | Version | |
|---|---|---|---|
| WatchGuard | Fireware OS |
Affected:
2025.1 , < 2026.4
(custom)
Affected: 12.0 , < 12.12.4 (custom) |
|
| WatchGuard | Fireware OS |
Affected:
12.0 , < 12.5.22
(custom)
|
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CVE-2026-110834 (GCVE-0-2026-110834)
Vulnerability from cvelistv5 – Published: 2026-10-14 22:52 – Updated: 2026-10-15 15:31
VLAI
EPSS
VEX
Title
FreeRDP 2.0.0 before 3.32.0 Denial of Service via Serial IRP Null Handle
Summary
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Severity
SSVC
Exploitation: poc
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-10-15 15:31 UTC
CWE
- CWE-476 - NULL Pointer Dereference
Assigner
VulnCheck
CNA
References
2 references
| URL | Tags |
|---|---|
| https://github.com/FreeRDP/FreeRDP/security/advis… | vendor-advisory |
| https://www.vulncheck.com/advisories/freerdp-2.0.… | third-party-advisory |
Impacted products
Date Public
2026-09-30 00:00
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CVE-2026-110829 (GCVE-0-2026-110829)
Vulnerability from cvelistv5 – Published: 2026-10-14 22:52 – Updated: 2026-10-15 15:25
VLAI
EPSS
VEX
Title
FreeRDP 3.0.0 before 3.32.0 Null Pointer Dereference via rdpsnd Fragment
Summary
FreeRDP versions from 3.0.0 before 3.32.0 contain a null pointer dereference in the rdpsnd channel when a fragment sets CHANNEL_FLAG_LAST without CHANNEL_FLAG_FIRST. A malicious RDP server can send a malformed rdpsnd PDU on a fresh channel to crash the client and cause denial of service.
Severity
SSVC
Exploitation: poc
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-10-15 15:24 UTC
CWE
- CWE-476 - NULL Pointer Dereference
Assigner
VulnCheck
CNA
References
2 references
| URL | Tags |
|---|---|
| https://github.com/FreeRDP/FreeRDP/security/advis… | vendor-advisory |
| https://www.vulncheck.com/advisories/freerdp-3.0.… | third-party-advisory |
Impacted products
Date Public
2026-09-30 00:00
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CVE-2026-110659 (GCVE-0-2026-110659)
Vulnerability from cvelistv5 – Published: 2026-10-14 15:01 – Updated: 2026-10-20 01:27
VLAI
EPSS
VEX
Title
ELFIO through 3.12 NULL Pointer Dereference via relocation_section_accessor get_entry
Summary
ELFIO through 3.12 contains a NULL pointer dereference vulnerability in relocation_section_accessor get_entry() that allows attackers to crash applications via an unvalidated sh_link index. Attackers can supply a crafted ELF file whose SHT_REL or SHT_RELA section has a dangling sh_link, causing find_hash_section() to dereference null and deny service.
Severity
5.5 (Medium)
SSVC
Exploitation: poc
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-10-20 01:27 UTC
CWE
- CWE-476 - NULL Pointer Dereference
Assigner
VulnCheck
CNA
References
4 references
| URL | Tags |
|---|---|
| https://hackmd.io/@haind-pwn/elfio-relocation-get… | technical-descriptionexploit |
| https://github.com/serge1/ELFIO/blob/8ae6cec5d604… | technical-description |
| https://github.com/serge1/ELFIO | product |
| https://www.vulncheck.com/advisories/elfio-throug… | third-party-advisory |
Date Public
2026-10-14 00:00
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CVE-2026-110600 (GCVE-0-2026-110600)
Vulnerability from cvelistv5 – Published: 2026-10-14 14:16 – Updated: 2026-10-14 20:43
VLAI
EPSS
VEX
Title
xlsxio through 0.2.37 NULL Pointer Dereference via Worksheet Relationship Without Id
Summary
xlsxio through 0.2.37 contains a NULL pointer dereference vulnerability in main_sheet_get_sheetfile_expat_callback_element_start() in lib/xlsxio_read.c that allows attackers to crash applications via crafted files. Attackers can supply a .xlsx file whose workbook.xml.rels contains a worksheet Relationship lacking an Id attribute, crashing the process when xlsxioread_sheet_open() is called.
Severity
5.5 (Medium)
SSVC
Exploitation: poc
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-10-14 20:43 UTC
CWE
- CWE-476 - NULL Pointer Dereference
Assigner
VulnCheck
CNA
References
4 references
| URL | Tags |
|---|---|
| https://github.com/brechtsanders/xlsxio/issues/151 | issue-tracking |
| https://github.com/brechtsanders/xlsxio/blob/0.2.… | technical-description |
| https://hackmd.io/@haind-pwn/xlsxio-relationship-… | third-party-advisory |
| https://www.vulncheck.com/advisories/xlsxio-throu… | third-party-advisory |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| brechtsanders | xlsxio |
Affected:
0 , ≤ 0.2.37
(semver)
cpe:2.3:a:xlsxio_project:xlsxio:*:*:*:*:*:*:*:* |
Date Public
2026-09-20 00:00
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CVE-2026-110491 (GCVE-0-2026-110491)
Vulnerability from cvelistv5 – Published: 2026-10-22 22:01 – Updated: 2026-10-23 10:56
VLAI
EPSS
VEX
Title
Kiloview E3 NDI Encoder NULL Pointer Dereference
Summary
The ONVIF service on the E3 can be rendered unresponsive by sending malformed or incomplete requests to certain operations. The affected service stops accepting new connections while the rest of the device continues operating normally, and will recover automatically after a period. This can be triggered repeatedly by any unauthenticated party with network access to the device.
Severity
SSVC
Exploitation: none
Automatable: yes
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-10-23 10:46 UTC
CWE
Assigner
icscert
CNA
References
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Kiloview | E3 Firmware |
Affected:
0 , < 1.30
(custom)
Unaffected: 1.30 |
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CVE-2026-109967 (GCVE-0-2026-109967)
Vulnerability from cvelistv5 – Published: 2026-10-13 14:00 – Updated: 2026-10-16 21:57 Unsupported When Assigned
VLAI
EPSS
VEX
Title
yt-dlp-web-ui through 4.0.0 NULL Pointer Dereference DoS via Service.Formats
Summary
yt-dlp-web-ui through 4.0.0 contains a NULL pointer dereference vulnerability in the Service.Formats JSON-RPC method that allows remote unauthenticated attackers to crash the server. Attackers can send a single request with a url value like --version, causing invalid yt-dlp JSON output and an unrecovered panic that terminates the process.
Severity
SSVC
Exploitation: poc
Automatable: yes
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-10-16 21:57 UTC
CWE
- CWE-476 - NULL Pointer Dereference
Assigner
VulnCheck
CNA
References
5 references
| URL | Tags |
|---|---|
| https://github.com/vazzzy071-crypto/security-advi… | third-party-advisoryexploit |
| https://github.com/marcopiovanello/yt-dlp-web-ui/… | technical-description |
| https://github.com/marcopiovanello/yt-dlp-web-ui/… | technical-description |
| https://github.com/marcopiovanello/yt-dlp-web-ui | product |
| https://www.vulncheck.com/advisories/yt-dlp-web-u… | third-party-advisory |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| marcopiovanello | yt-dlp-web-ui |
Affected:
0 , ≤ 4.0.0
(semver)
|
Date Public
2026-10-13 00:00
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"dateUpdated": "2026-10-16T21:57:12.112Z",
"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.