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.
6927 vulnerabilities reference this CWE, most recent first.
CVE-2026-83636 (GCVE-0-2026-83636)
Vulnerability from cvelistv5 – Published: 2026-10-13 19:00 – Updated: 2026-10-16 23:22
VLAI
EPSS
VEX
Title
Windows Hyper-V Denial of Service Vulnerability
Summary
Null pointer dereference in Windows Hyper-V allows an authorized attacker to deny service locally.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-10-13 20:39 UTC
CWE
- CWE-476 - NULL Pointer Dereference
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://msrc.microsoft.com/update-guide/vulnerabi… | vendor-advisorypatch |
Impacted products
11 products
| Vendor | Product | Version | |
|---|---|---|---|
| Microsoft | Windows 10 Version 21H2 |
Affected:
10.0.19044.0 , < 10.0.19044.7807
(custom)
|
|
| Microsoft | Windows 10 Version 22H2 |
Affected:
10.0.19045.0 , < 10.0.19045.7807
(custom)
|
|
| Microsoft | Windows 11 version 23H2 |
Affected:
10.0.22631.0 , < 10.0.22631.7652
(custom)
|
|
| Microsoft | Windows 11 Version 23H2 |
Affected:
10.0.22631.0 , < 10.0.22631.7652
(custom)
|
|
| Microsoft | Windows 11 Version 24H2 |
Affected:
10.0.26100.0 , < 10.0.26100.9711
(custom)
|
|
| Microsoft | Windows 11 Version 25H2 |
Affected:
10.0.26200.0 , < 10.0.26200.9711
(custom)
|
|
| Microsoft | Windows 11 version 26H1 |
Affected:
10.0.28000.0 , < 10.0.28000.3231
(custom)
|
|
| Microsoft | Windows 11 Version 26H2 |
Affected:
10.0.26300.0 , < 10.0.26300.9711
(custom)
|
|
| Microsoft | Windows Server 2022 |
Affected:
10.0.20348.0 , < 10.0.20348.5761
(custom)
|
|
| Microsoft | Windows Server 2025 |
Affected:
10.0.26100.0 , < 10.0.26100.33650
(custom)
|
|
| Microsoft | Windows Server 2025 (Server Core installation) |
Affected:
10.0.26100.0 , < 10.0.26100.33650
(custom)
|
Date Public
2026-10-13 14:00
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CVE-2026-83571 (GCVE-0-2026-83571)
Vulnerability from cvelistv5 – Published: 2026-10-13 18:59 – Updated: 2026-10-16 23:16
VLAI
EPSS
VEX
Title
Windows Audio Service Information Disclosure Vulnerability
Summary
Null pointer dereference in Windows Audio Service allows an authorized attacker to disclose information locally.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-10-13 20:40 UTC
CWE
- CWE-476 - NULL Pointer Dereference
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://msrc.microsoft.com/update-guide/vulnerabi… | vendor-advisorypatch |
Impacted products
21 products
| Vendor | Product | Version | |
|---|---|---|---|
| Microsoft | Windows 10 Version 1607 |
Affected:
10.0.14393.0 , < 10.0.14393.9612
(custom)
|
|
| Microsoft | Windows 10 Version 1809 |
Affected:
10.0.17763.0 , < 10.0.17763.9376
(custom)
|
|
| Microsoft | Windows 10 Version 21H2 |
Affected:
10.0.19044.0 , < 10.0.19044.7807
(custom)
|
|
| Microsoft | Windows 10 Version 22H2 |
Affected:
10.0.19045.0 , < 10.0.19045.7807
(custom)
|
|
| Microsoft | Windows 11 version 23H2 |
Affected:
10.0.22631.0 , < 10.0.22631.7652
(custom)
|
|
| Microsoft | Windows 11 Version 23H2 |
Affected:
10.0.22631.0 , < 10.0.22631.7652
(custom)
|
|
| Microsoft | Windows 11 Version 24H2 |
Affected:
10.0.26100.0 , < 10.0.26100.9711
(custom)
|
|
| Microsoft | Windows 11 Version 25H2 |
Affected:
10.0.26200.0 , < 10.0.26200.9711
(custom)
|
|
| Microsoft | Windows 11 version 26H1 |
Affected:
10.0.28000.0 , < 10.0.28000.3231
(custom)
|
|
| Microsoft | Windows 11 Version 26H2 |
Affected:
10.0.26300.0 , < 10.0.26300.9711
(custom)
|
|
| Microsoft | Windows Server 2012 |
Affected:
6.2.9200.0 , < 6.2.9200.26434
(custom)
|
|
| Microsoft | Windows Server 2012 (Server Core installation) |
Affected:
6.2.9200.0 , < 6.2.9200.26434
(custom)
|
|
| Microsoft | Windows Server 2012 R2 |
Affected:
6.3.9600.0 , < 6.3.9600.23470
(custom)
|
|
| Microsoft | Windows Server 2012 R2 (Server Core installation) |
Affected:
6.3.9600.0 , < 6.3.9600.23470
(custom)
|
|
| Microsoft | Windows Server 2016 |
Affected:
10.0.14393.0 , < 10.0.14393.9612
(custom)
|
|
| Microsoft | Windows Server 2016 (Server Core installation) |
Affected:
10.0.14393.0 , < 10.0.14393.9612
(custom)
|
|
| Microsoft | Windows Server 2019 |
Affected:
10.0.17763.0 , < 10.0.17763.9376
(custom)
|
|
| Microsoft | Windows Server 2019 (Server Core installation) |
Affected:
10.0.17763.0 , < 10.0.17763.9376
(custom)
|
|
| Microsoft | Windows Server 2022 |
Affected:
10.0.20348.0 , < 10.0.20348.5761
(custom)
|
|
| Microsoft | Windows Server 2025 |
Affected:
10.0.26100.0 , < 10.0.26100.33650
(custom)
|
|
| Microsoft | Windows Server 2025 (Server Core installation) |
Affected:
10.0.26100.0 , < 10.0.26100.33650
(custom)
|
Date Public
2026-10-13 14:00
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CVE-2026-82926 (GCVE-0-2026-82926)
Vulnerability from cvelistv5 – Published: 2026-09-01 10:21 – Updated: 2026-09-21 12:03
VLAI
EPSS
VEX
Summary
NULL pointer dereference vulnerability in Samsung Open Source mTower allows Pointer Manipulation.
This issue affects mTower: before afef59aa6f55c5d5ebf9b14bc020bf1c2c37489a.
Severity
5.5 (Medium)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-01 12:18 UTC
CWE
- CWE-476 - NULL pointer dereference
Assigner
References
1 reference
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Samsung Open Source | mTower |
Affected:
0 , < afef59aa6f55c5d5ebf9b14bc020bf1c2c37489a
(git)
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CVE-2026-82821 (GCVE-0-2026-82821)
Vulnerability from cvelistv5 – Published: 2026-08-31 18:45 – Updated: 2026-08-31 19:00 X_Open Source
VLAI
EPSS
VEX
Title
FLVMeta AMF Object Parsing amf.c amf_object_get null pointer dereference
Summary
A vulnerability was determined in FLVMeta up to 1.2.2. Affected by this vulnerability is the function amf_object_get of the file src/amf.c of the component AMF Object Parsing. This manipulation causes null pointer dereference. The attack may be initiated remotely. The exploit has been publicly disclosed and may be utilized. Patch name: 52642f7dfb76ec7334016622dde60b1ae963d79b. To fix this issue, it is recommended to deploy a patch. The project maintainer doubts the security impact: "While I acknowledged the bugs and provided fixes, I have yet to see any way to exploit these alleged vulnerabilities."
Severity
SSVC
Exploitation: poc
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-08-31 19:00 UTC
Assigner
References
7 references
| URL | Tags |
|---|---|
| https://vuldb.com/vuln/397244 | vdb-entrytechnical-description |
| https://vuldb.com/vuln/397244/cti | signaturepermissions-required |
| https://vuldb.com/cve/CVE-2026-82821 | third-party-advisory |
| https://vuldb.com/submit/876597 | third-party-advisory |
| https://github.com/noirotm/flvmeta/issues/28 | issue-tracking |
| https://github.com/raind20001020/Poc/blob/main/fl… | exploit |
| https://github.com/noirotm/flvmeta/commit/52642f7… | patch |
Impacted products
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CVE-2026-82803 (GCVE-0-2026-82803)
Vulnerability from cvelistv5 – Published: 2026-08-31 15:30 – Updated: 2026-09-02 14:00
VLAI
EPSS
VEX
Title
armink struct2json JSON Deserialization s2jdef.h S2J_STRUCT_GET_string_ELEMENT null pointer dereference
Summary
A vulnerability has been found in armink struct2json 1.0. This affects the function S2J_STRUCT_GET_string_ELEMENT in the library struct2json/inc/s2jdef.h of the component JSON Deserialization. The manipulation of the argument valuestring leads to null pointer dereference. The attack may be initiated remotely. The exploit has been disclosed to the public and may be used. The vendor was contacted early about this disclosure but did not respond in any way.
Severity
SSVC
Exploitation: poc
Automatable: yes
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-02 13:59 UTC
Assigner
References
6 references
| URL | Tags |
|---|---|
| https://vuldb.com/vuln/397224 | vdb-entrytechnical-description |
| https://vuldb.com/vuln/397224/cti | signaturepermissions-required |
| https://vuldb.com/cve/CVE-2026-82803 | third-party-advisory |
| https://vuldb.com/submit/858192 | third-party-advisory |
| https://github.com/fa1c4/security-advisories/tree… | related |
| https://github.com/fa1c4/security-advisories/tree… | exploit |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| armink | struct2json |
Affected:
1.0
cpe:2.3:a:armink:struct2json:*:*:*:*:*:*:*:* |
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CVE-2026-82588 (GCVE-0-2026-82588)
Vulnerability from cvelistv5 – Published: 2026-08-30 22:00 – Updated: 2026-09-01 14:17 X_Open Source
VLAI
EPSS
VEX
Title
Open5GS Transfer Endpoint namf-handler.c null pointer dereference
Summary
A vulnerability was identified in Open5GS up to 2.7.7. This issue affects some unknown processing of the file src/amf/namf-handler.c of the component Transfer Endpoint. Such manipulation leads to null pointer dereference. The attack can be launched remotely. Upgrading to version 2.8.0 is capable of addressing this issue. The name of the patch is abf8a836564b966b5141110fc25ed413c4f17522. Upgrading the affected component is advised.
Severity
SSVC
Exploitation: poc
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-01 14:17 UTC
Assigner
References
8 references
| URL | Tags |
|---|---|
| https://vuldb.com/vuln/397083 | vdb-entry |
| https://vuldb.com/vuln/397083/cti | signaturepermissions-required |
| https://vuldb.com/cve/CVE-2026-82588 | third-party-advisory |
| https://vuldb.com/submit/891891 | third-party-advisory |
| https://github.com/open5gs/open5gs/issues/4397 | issue-tracking |
| https://github.com/open5gs/open5gs/commit/abf8a83… | patch |
| https://github.com/open5gs/open5gs/releases/tag/v2.8.0 | patch |
| https://github.com/open5gs/open5gs/ | product |
Impacted products
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CVE-2026-82357 (GCVE-0-2026-82357)
Vulnerability from cvelistv5 – Published: 2026-10-01 19:41 – Updated: 2026-10-07 15:52
VLAI
EPSS
VEX
Title
RT-Labs AB C-Open CANopen NULL pointer dereference
Summary
RT-Labs AB C-Open CANopen contains a NULL pointer dereference if the LSS protocol is used to configure the device. An object defined by the user application may not have all required subindexes for object 0x1018. An unauthenticated, remote attacker with access to the CAN bus, through a compromised node for instance, can initiate the LSS protocol on a device with a misconfigured identity object and potentially crash the device. Fixed in 1.1.1.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · cisa-cg (v2.0.3)
Decision recorded 2026-08-28 17:49 UTC
CWE
- CWE-476 - NULL Pointer Dereference
Assigner
References
4 references
| URL | Tags |
|---|---|
| https://rt-labs.com/wp-content/uploads/2026/09/RR… | vendor-advisory |
| https://github.com/rtlabs-com/c-open/releases/tag… | release-notes |
| https://raw.githubusercontent.com/cisagov/CSAF/de… | third-party-advisory |
| https://www.cve.org/CVERecord?id=CVE-2026-82357 | vdb-entry |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| RT-Labs AB | C-Open |
Affected:
0 , < 1.1.1
(custom)
Unaffected: 1.1.1 |
Date Public
2026-09-21 00:00
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CVE-2026-82055 (GCVE-0-2026-82055)
Vulnerability from cvelistv5 – Published: 2026-09-08 16:12 – Updated: 2026-09-08 17:56
VLAI
EPSS
VEX
Title
Null Pointer Dereference in MongoDB Server 2dsphere Index Key Generation Leads to Denial of Service
Summary
A security issue exists in MongoDB's 2dsphere index key generation that can cause a server crash due to a null pointer dereference. When a specially crafted GeoJSON document is inserted into a collection with a 2dsphere index, an inconsistency in geometry parsing can leave an internal object in an invalid, partially initialized state. During subsequent index key generation, access to this improperly initialized object results in a null pointer dereference that terminates the mongod process. An authenticated user with write access can use this to cause a denial of service.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-08 17:56 UTC
CWE
- CWE-476 - NULL Pointer Dereference
Assigner
References
1 reference
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| MongoDB | MongoDB Server |
Affected:
8.3.0 , < 8.3.9
(semver)
|
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CVE-2026-81490 (GCVE-0-2026-81490)
Vulnerability from cvelistv5 – Published: 2026-08-28 20:10 – Updated: 2026-08-31 18:39
VLAI
EPSS
VEX
Title
MongoDB Connector for BI Improper Error Handling During Schema Sampling May Cause Loss of SQL Service
Summary
A database user able to create a view in a namespace that MongoDB Connector for BI samples can cause the schema-sampling routine to stop functioning by defining a view whose evaluation reliably fails. The sampling logic classifies the resulting server message as transient and, after the configured retries are exhausted, proceeds without a valid result, ending the schema refresh routine. The mongosqld process continues running without a usable schema, so SQL clients are unable to obtain results until an operator removes the view or excludes its namespace from sampling.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-08-31 18:39 UTC
CWE
- CWE-476 - NULL Pointer Dereference
Assigner
References
1 reference
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| MongoDB | BI Connector |
Affected:
0 , < 2.14.31
(semver)
|
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CVE-2026-80118 (GCVE-0-2026-80118)
Vulnerability from cvelistv5 – Published: 2026-09-04 18:37 – Updated: 2026-10-01 19:19
VLAI
EPSS
VEX
Title
PassMark PerformanceTest, BurnInTest, and OSForensics Kernel Null Pointer Dereference via DirectIo64.sys IOCTL
Summary
PassMark PerformanceTest before 11.1 build 1012, BurnInTest before 11.1 build 1000, and OSForensics before 11.1 build 1016 contain an unauthenticated physical memory disclosure in DirectIo64.sys, reachable by unprivileged local users through a single IOCTL with no caller-identity check. The handler writes a crash-dump-format (PAGEDU64) image of all physical memory to a caller-supplied file path in the SYSTEM context, allowing a standard user to create files in locations they cannot otherwise write and to recover memory belonging to processes of other users. The image is preceded by a header that exposes the kernel loaded-module list, active-process list and PFN database pointers, defeating KASLR. The same handler also dereferences the return value of an internal kernel-structure locator without a NULL check; that locator returns NULL on three distinct failure paths, and a kernel crash results on builds where any of those paths is taken.
Severity
SSVC
Exploitation: poc
Automatable: no
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-10 13:51 UTC
CWE
Assigner
References
6 references
| URL | Tags |
|---|---|
| https://github.com/floppywiggler/directio64-disclosure | technical-descriptionexploit |
| https://www.passmark.com/products/performancetest… | release-notespatch |
| https://www.passmark.com/products/burnintest/hist… | release-notespatch |
| https://www.osforensics.com/whats-new.html | release-notespatch |
| https://dkom.dev/posts/directio64-disclosure/ | technical-description |
| https://www.vulncheck.com/advisories/passmark-per… | third-party-advisory |
Impacted products
3 products
| Vendor | Product | Version | |
|---|---|---|---|
| PassMark Software | PerformanceTest |
Affected:
0 , < 11.1 build 1012
(custom)
|
|
| PassMark Software | BurnInTest |
Affected:
0 , < 11.1 build 1000
(custom)
|
|
| PassMark Software | OSForensics |
Affected:
0 , < 11.1 build 1016
(custom)
|
Date Public
2026-06-24 00:00
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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.