CWE-476
NULL Pointer Dereference
The product dereferences a pointer that it expects to be valid but is NULL.
CVE-2026-29169 (GCVE-0-2026-29169)
Vulnerability from cvelistv5 – Published: 2026-05-04 14:48 – Updated: 2026-05-05 20:23
VLAI
Title
Apache HTTP Server: mod_dav_lock indirect lock crash
Summary
A NULL pointer dereference in mod_dav_lock in Apache HTTP Server 2.4.66 and earlier may allow an attacker to crash the server with a malicious request.mod_dav_lock is not used internally by mod_dav or mod_dav_fs.
The only known use-case for mod_dav_lock was mod_dav_svn from Apache Subversion earlier than version 1.2.0.
Users are recommended to upgrade to version 2.4.66, which fixes this issue, or remove mod_dav_lock.
Severity
7.5 (High)
SSVC
Exploitation: none
Automatable: yes
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
- CWE-476 - NULL Pointer Dereference
Assigner
References
3 references
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Apache Software Foundation | Apache HTTP Server |
Affected:
0 , ≤ 2.4.66
(semver)
|
Credits
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CVE-2026-29781 (GCVE-0-2026-29781)
Vulnerability from cvelistv5 – Published: 2026-03-07 15:25 – Updated: 2026-03-09 18:26
VLAI
Title
Sliver: Authenticated Nil-Pointer Dereference in Handlers
Summary
Sliver is a command and control framework that uses a custom Wireguard netstack. In versions from 1.7.3 and prior, a vulnerability exists in the Sliver C2 server's Protobuf unmarshalling logic due to a systemic lack of nil-pointer validation. By extracting valid implant credentials and omitting nested fields in a signed message, an authenticated actor can trigger an unhandled runtime panic. Because the mTLS, WireGuard, and DNS transport layers lack the panic recovery middleware present in the HTTP transport, this results in a global process termination. While requiring post-authentication access (a captured implant), this flaw effectively acts as an infrastructure "kill-switch," instantly severing all active sessions across the entire fleet and requiring a manual server restart to restore operations. At time of publication, there are no publicly available patches.
Severity
SSVC
Exploitation: poc
Automatable: no
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
- CWE-476 - NULL Pointer Dereference
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://github.com/BishopFox/sliver/security/advi… | x_refsource_CONFIRM |
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CVE-2026-29785 (GCVE-0-2026-29785)
Vulnerability from cvelistv5 – Published: 2026-03-25 19:38 – Updated: 2026-03-28 01:34
VLAI
Title
NATS Server panic via malicious compression on leafnode port
Summary
NATS-Server is a High-Performance server for NATS.io, a cloud and edge native messaging system. Prior to versions 2.11.14 and 2.12.5, if the nats-server has the "leafnode" configuration enabled (not default), then anyone who can connect can crash the nats-server by triggering a panic. This happens pre-authentication and requires that compression be enabled (which it is, by default, when leafnodes are used). Versions 2.11.14 and 2.12.5 contain a fix. As a workaround, disable compression on the leafnode port.
Severity
7.5 (High)
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://github.com/nats-io/nats-server/security/a… | x_refsource_CONFIRM |
| https://github.com/nats-io/nats-server/commit/a14… | x_refsource_MISC |
| https://advisories.nats.io/CVE/secnote-2026-04.txt | x_refsource_MISC |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| nats-io | nats-server |
Affected:
< 2.11.14
Affected: >= 2.12.0-RC.1, < 2.12.5 |
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CVE-2026-30986 (GCVE-0-2026-30986)
Vulnerability from cvelistv5 – Published: 2026-03-10 17:56 – Updated: 2026-03-10 19:32
VLAI
Title
iccDEV has a heap-based buffer overflow write in CIccCLUT::Interp3d()
Summary
iccDEV provides a set of libraries and tools for working with ICC color management profiles. Prior to 2.3.1.5, there is a heap-based buffer overflow write in CIccMatrixMath::SetRange() causing memory corruption or crash. This vulnerability is fixed in 2.3.1.5.
Severity
5.5 (Medium)
SSVC
Exploitation: none
Automatable: no
Technical Impact: total
CISA Coordinator (v2.0.3)
Assigner
References
4 references
| URL | Tags |
|---|---|
| https://github.com/InternationalColorConsortium/i… | x_refsource_CONFIRM |
| https://github.com/InternationalColorConsortium/i… | x_refsource_MISC |
| https://github.com/InternationalColorConsortium/i… | x_refsource_MISC |
| https://github.com/InternationalColorConsortium/i… | x_refsource_MISC |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| InternationalColorConsortium | iccDEV |
Affected:
< 2.3.1.5
|
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CVE-2026-3146 (GCVE-0-2026-3146)
Vulnerability from cvelistv5 – Published: 2026-02-25 03:02 – Updated: 2026-02-25 15:52 X_Open Source
VLAI
Title
libvips matrixload.c vips_foreign_load_matrix_header null pointer dereference
Summary
A vulnerability has been found in libvips up to 8.18.0. The impacted element is the function vips_foreign_load_matrix_header of the file libvips/foreign/matrixload.c. The manipulation leads to null pointer dereference. The attack needs to be performed locally. The identifier of the patch is d4ce337c76bff1b278d7085c3c4f4725e3aa6ece. To fix this issue, it is recommended to deploy a patch.
Severity
SSVC
Exploitation: poc
Automatable: no
Technical Impact: partial
CISA Coordinator (v2.0.3)
Assigner
References
7 references
| URL | Tags |
|---|---|
| https://vuldb.com/?id.347652 | vdb-entrytechnical-description |
| https://vuldb.com/?ctiid.347652 | signaturepermissions-required |
| https://vuldb.com/?submit.758691 | third-party-advisory |
| https://github.com/libvips/libvips/issues/4875 | issue-tracking |
| https://github.com/libvips/libvips/pull/4888 | issue-trackingpatch |
| https://github.com/libvips/libvips/commit/d4ce337… | patch |
| https://github.com/libvips/libvips/ | product |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| n/a | libvips |
Affected:
8.0
Affected: 8.1 Affected: 8.2 Affected: 8.3 Affected: 8.4 Affected: 8.5 Affected: 8.6 Affected: 8.7 Affected: 8.8 Affected: 8.9 Affected: 8.10 Affected: 8.11 Affected: 8.12 Affected: 8.13 Affected: 8.14 Affected: 8.15 Affected: 8.16 Affected: 8.17 Affected: 8.18.0 cpe:2.3:a:libvips:libvips:*:*:*:*:*:*:*:* |
Credits
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CVE-2026-31792 (GCVE-0-2026-31792)
Vulnerability from cvelistv5 – Published: 2026-03-10 18:00 – Updated: 2026-03-10 19:32
VLAI
Title
iccDEV has a null pointer dereference in CIccTagXmlStruct::ParseTag()
Summary
iccDEV provides a set of libraries and tools for working with ICC color management profiles. Prior to 2.3.1.5, there is a null pointer dereference in CIccTagXmlStruct::ParseTag() causing a segmentation fault or denial of service. This vulnerability is fixed in 2.3.1.5.
Severity
7.8 (High)
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://github.com/InternationalColorConsortium/i… | x_refsource_CONFIRM |
| https://github.com/InternationalColorConsortium/i… | x_refsource_MISC |
| https://github.com/InternationalColorConsortium/i… | x_refsource_MISC |
| https://github.com/InternationalColorConsortium/i… | x_refsource_MISC |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| InternationalColorConsortium | iccDEV |
Affected:
< 2.3.1.5
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CVE-2026-31931 (GCVE-0-2026-31931)
Vulnerability from cvelistv5 – Published: 2026-04-02 14:01 – Updated: 2026-04-02 14:18
VLAI
Title
Suricata tls: null dereference in tls.alpn rule keyword
Summary
Suricata is a network IDS, IPS and NSM engine. From version 8.0.0 to before version 8.0.4, use of the "tls.alpn" rule keyword can cause Suricata to crash with a NULL dereference. This issue has been patched in version 8.0.4.
Severity
7.5 (High)
SSVC
Exploitation: none
Automatable: yes
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
- CWE-476 - NULL Pointer Dereference
Assigner
References
2 references
| URL | Tags |
|---|---|
| https://github.com/OISF/suricata/security/advisor… | x_refsource_CONFIRM |
| https://redmine.openinfosecfoundation.org/issues/8294 | x_refsource_MISC |
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CVE-2026-31964 (GCVE-0-2026-31964)
Vulnerability from cvelistv5 – Published: 2026-03-18 18:27 – Updated: 2026-03-18 18:46
VLAI
Title
HTSlib CRAM decoder has a NULL Pointer Dereference
Summary
HTSlib is a library for reading and writing bioinformatics file formats. CRAM is a compressed format which stores DNA sequence alignment data using a variety of encodings and compression methods. While most alignment records store DNA sequence and quality values, the format also allows them to omit this data in certain cases to save space. Due to some quirks of the CRAM format, it is necessary to handle these records carefully as they will actually store data that needs to be consumed and then discarded. Unfortunately the `CONST`, `XPACK` and `XRLE` encodings did not properly implement the interface needed to do this. Trying to decode records with omitted sequence or quality data using these encodings would result in an attempt to write to a NULL pointer. Exploiting this bug causes a NULL pointer dereference. Typically this will cause the program to crash. Versions 1.23.1, 1.22.2 and 1.21.1 include fixes for this issue. There is no workaround for this issue.
Severity
SSVC
Exploitation: none
Automatable: yes
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
- CWE-476 - NULL Pointer Dereference
Assigner
References
2 references
| URL | Tags |
|---|---|
| https://github.com/samtools/htslib/security/advis… | x_refsource_CONFIRM |
| https://github.com/samtools/htslib/commit/e64e68d… | x_refsource_MISC |
Impacted products
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CVE-2026-31973 (GCVE-0-2026-31973)
Vulnerability from cvelistv5 – Published: 2026-03-18 20:34 – Updated: 2026-03-19 16:14
VLAI
Title
NULL pointer dereference in samtools cram-size
Summary
SAMtools is a program for reading, manipulating and writing bioinformatics file formats. Starting in version 1.17, in the cram-size command, used to write information about how well CRAM files are compressed, a check to see if the `cram_decode_compression_header()` was missing. If the function returned an error, this could lead to a NULL pointer dereference. Exploiting this bug causes a NULL pointer dereference. Typically this will cause the program to crash. Versions 1.23.1, 1.22.2 and 1.21.1 include fixes for this issue. There is no workaround for this issue.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
- CWE-476 - NULL Pointer Dereference
Assigner
References
3 references
| URL | Tags |
|---|---|
| https://github.com/samtools/samtools/security/adv… | x_refsource_CONFIRM |
| https://github.com/samtools/samtools/commit/06fc2… | x_refsource_MISC |
| http://www.openwall.com/lists/oss-security/2026/0… |
Impacted products
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CVE-2026-3202 (GCVE-0-2026-3202)
Vulnerability from cvelistv5 – Published: 2026-02-25 14:35 – Updated: 2026-03-27 13:56
VLAI
Title
NULL Pointer Dereference in Wireshark
Summary
NTS-KE protocol dissector crash in Wireshark 4.6.0 to 4.6.3 allows denial of service
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
2 references
| URL | Tags |
|---|---|
| https://www.wireshark.org/security/wnpa-sec-2026-… | |
| https://gitlab.com/wireshark/wireshark/-/issues/21000 | issue-trackingpermissions-required |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Wireshark Foundation | Wireshark |
Affected:
4.6.0 , < 4.6.4
(semver)
|
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Mitigation ID: MIT-56
Phase: Implementation
Description:
- 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
Phase: Requirements
Description:
- Select a programming language that is not susceptible to these issues.
Mitigation
Phase: Implementation
Description:
- Check the results of all functions that return a value and verify that the value is non-null before acting upon it.
Mitigation
Phase: Architecture and Design
Description:
- 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
Phase: Implementation
Description:
- 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.