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-2026-20457 (GCVE-0-2026-20457)
Vulnerability from cvelistv5 – Published: 2026-07-01 03:13 – Updated: 2026-07-01 10:40
VLAI
EPSS
VEX
Summary
In Modem, there is a possible system crash due to improper input validation. This could lead to remote denial of service, if a UE has connected to a rogue base station controlled by the attacker, with no additional execution privileges needed. User interaction is not needed for exploitation. Patch ID: MOLY01826924; Issue ID: MSV-7301.
Severity
5.3 (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 | |
|---|---|---|---|
| MediaTek, Inc. | MediaTek chipset |
Affected:
MT2735
Affected: MT2737 Affected: MT6739 Affected: MT6761 Affected: MT6762 Affected: MT6763 Affected: MT6765 Affected: MT6767 Affected: MT6768 Affected: MT6769 Affected: MT6771 Affected: MT6779 Affected: MT6781 Affected: MT6783 Affected: MT6785 Affected: MT6789 Affected: MT6833 Affected: MT6853 Affected: MT6855 Affected: MT6873 Affected: MT6875 Affected: MT6877 Affected: MT6879 Affected: MT6880 Affected: MT6883 Affected: MT6885 Affected: MT6886 Affected: MT6889 Affected: MT6890 Affected: MT6891 Affected: MT6893 Affected: MT6895 Affected: MT6896 Affected: MT6980 Affected: MT6983 Affected: MT6985 Affected: MT6989 Affected: MT6990 Affected: MT8666 Affected: MT8667 Affected: MT8673 Affected: MT8675 Affected: MT8765 Affected: MT8766 Affected: MT8766R Affected: MT8768 Affected: MT8771 Affected: MT8781 Affected: MT8786 Affected: MT8788 Affected: MT8788E Affected: MT8789 Affected: MT8791 Affected: MT8791T Affected: MT8795T Affected: MT8796 Affected: MT8797 Affected: MT8798 Affected: MT8893 |
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CVE-2026-20064 (GCVE-0-2026-20064)
Vulnerability from cvelistv5 – Published: 2026-03-04 18:36 – Updated: 2026-03-04 19:05
VLAI
EPSS
VEX
Summary
A vulnerability in of Cisco Secure Firewall Threat Defense (FTD) Software could allow an authenticated, local attacker to cause the device to unexpectedly reload, causing a denial of service (DoS) condition.
This vulnerability is due to improper validation of user-supplied input. An attacker with a low-privileged account could exploit this vulnerability by using crafted commands at the CLI prompt. A successful exploit could allow the attacker to cause the device to reload, resulting in a DoS condition.
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
1 reference
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Cisco | Cisco Secure Firewall Threat Defense (FTD) Software |
Affected:
6.4.0
Affected: 6.4.0.1 Affected: 6.4.0.3 Affected: 6.4.0.2 Affected: 6.4.0.4 Affected: 6.4.0.5 Affected: 6.4.0.6 Affected: 6.4.0.7 Affected: 6.4.0.8 Affected: 6.4.0.9 Affected: 6.4.0.10 Affected: 6.4.0.11 Affected: 6.4.0.12 Affected: 6.4.0.13 Affected: 6.4.0.14 Affected: 6.4.0.15 Affected: 6.4.0.16 Affected: 6.4.0.17 Affected: 6.4.0.18 Affected: 7.0.0 Affected: 7.0.0.1 Affected: 7.0.1 Affected: 7.0.1.1 Affected: 7.0.2 Affected: 7.0.2.1 Affected: 7.0.3 Affected: 7.0.4 Affected: 7.0.5 Affected: 7.0.6 Affected: 7.0.6.1 Affected: 7.0.6.2 Affected: 7.0.6.3 Affected: 7.0.7 Affected: 7.0.8 Affected: 7.0.8.1 Affected: 7.1.0 Affected: 7.1.0.1 Affected: 7.1.0.2 Affected: 7.1.0.3 Affected: 7.2.0 Affected: 7.2.0.1 Affected: 7.2.1 Affected: 7.2.2 Affected: 7.2.3 Affected: 7.2.4 Affected: 7.2.4.1 Affected: 7.2.5 Affected: 7.2.5.1 Affected: 7.2.6 Affected: 7.2.7 Affected: 7.2.5.2 Affected: 7.2.8 Affected: 7.2.8.1 Affected: 7.2.9 Affected: 7.2.10 Affected: 7.2.10.2 Affected: 7.3.0 Affected: 7.3.1 Affected: 7.3.1.1 Affected: 7.3.1.2 Affected: 7.4.0 Affected: 7.4.1 Affected: 7.4.1.1 Affected: 7.4.2 Affected: 7.4.2.1 Affected: 7.4.2.2 Affected: 7.4.2.3 Affected: 7.4.2.4 Affected: 7.6.0 Affected: 7.6.1 Affected: 7.6.2 Affected: 7.6.2.1 Affected: 7.7.0 Affected: 7.7.10 Affected: 7.7.10.1 |
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CVE-2026-15690 (GCVE-0-2026-15690)
Vulnerability from cvelistv5 – Published: 2026-07-14 11:45 – Updated: 2026-07-14 12:56
VLAI
EPSS
VEX
Title
open62541 Shared Client ua_client_connect.c responseReadNamespacesArray null pointer dereference
Summary
A vulnerability was identified in open62541 up to 1.5.5. Affected by this issue is the function responseReadNamespacesArray of the file src/client/ua_client_connect.c of the component Shared Client Library. Such manipulation of the argument Server_NamespaceArray leads to null pointer dereference. The attack can be executed remotely. The attack requires a high level of complexity. The exploitation is known to be difficult. The exploit is publicly available and might be used. The project closed the issue report, stating that this is not the official way to report a security vulnerability.
Severity
SSVC
Exploitation: poc
Automatable: no
Technical Impact: partial
CISA Coordinator (v2.0.3)
Assigner
References
6 references
| URL | Tags |
|---|---|
| https://vuldb.com/vuln/378237 | vdb-entrytechnical-description |
| https://vuldb.com/vuln/378237/cti | signaturepermissions-required |
| https://vuldb.com/cve/CVE-2026-15690 | third-party-advisory |
| https://vuldb.com/submit/855996 | third-party-advisory |
| https://github.com/open62541/open62541/issues/8104 | exploitissue-tracking |
| https://github.com/open62541/open62541/ | product |
Impacted products
Credits
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CVE-2026-15352 (GCVE-0-2026-15352)
Vulnerability from cvelistv5 – Published: 2026-07-16 19:48 – Updated: 2026-07-16 21:03
VLAI
EPSS
VEX
Title
NASA Core Flight System (cFS) Health & Safety (HS) Application NULL Pointer Dereference
Summary
A vulnerability exists in the Health & Safety (HS) application of NASA's Core Flight System (cFS). The flaw allows the application to crash via segmentation fault when processing a routine Housekeeping Telemetry request, leading to denial of service.
Severity
CWE
- CWE-476 - NULL pointer dereference
Assigner
References
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| NASA | Core Flight System (cFS) Health & Safety (HS) Application |
Affected:
0 , < v7.0.1
(custom)
Unaffected: v7.0.1 |
Credits
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CVE-2026-15184 (GCVE-0-2026-15184)
Vulnerability from cvelistv5 – Published: 2026-07-09 12:00 – Updated: 2026-07-09 12:55 X_Open Source
VLAI
EPSS
VEX
Title
GNU LibreDWG DWG File dwg.c dwg_next_entity null pointer dereference
Summary
A vulnerability was found in GNU LibreDWG up to 0.13.4. The impacted element is the function dwg_next_entity of the file src/dwg.c of the component DWG File Handler. Performing a manipulation of the argument next_obj results in null pointer dereference. The attack must be initiated from a local position. The exploit has been made public and could be used. Upgrading to version 0.14 is sufficient to resolve this issue. The patch is named dde45dac3c4d902e4d8fed150a8017b9732019c9. Upgrading the affected component is recommended. Different than CVE-2026-9503.
Severity
SSVC
Exploitation: poc
Automatable: no
Technical Impact: partial
CISA Coordinator (v2.0.3)
Assigner
References
9 references
| URL | Tags |
|---|---|
| https://vuldb.com/vuln/377110 | vdb-entrytechnical-description |
| https://vuldb.com/vuln/377110/cti | signaturepermissions-required |
| https://vuldb.com/cve/CVE-2026-15184 | third-party-advisory |
| https://vuldb.com/submit/851192 | third-party-advisory |
| https://github.com/LibreDWG/libredwg/issues/1253 | issue-tracking |
| https://github.com/HackC0der/CVE-Repos/blob/main/… | exploit |
| https://github.com/LibreDWG/libredwg/commit/dde45… | patch |
| https://github.com/LibreDWG/libredwg/releases/tag/0.14 | patch |
| https://www.gnu.org/ | broken-linkproduct |
Impacted products
Credits
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CVE-2026-15171 (GCVE-0-2026-15171)
Vulnerability from cvelistv5 – Published: 2026-07-08 20:51 – Updated: 2026-07-09 13:44
VLAI
EPSS
VEX
Title
NULL Pointer Dereference in Wireshark
Summary
SSH protocol dissector crash in Wireshark 4.6.0 to 4.6.6 and 4.4.0 to 4.4.16 allows denial of service
Severity
5.5 (Medium)
SSVC
Exploitation: poc
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 | |
|---|---|---|---|
| Wireshark Foundation | Wireshark |
Affected:
4.6.0 , < 4.6.7
(semver)
Affected: 4.4.0 , < 4.4.17 (semver) |
Credits
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CVE-2026-14790 (GCVE-0-2026-14790)
Vulnerability from cvelistv5 – Published: 2026-07-06 02:15 – Updated: 2026-07-06 15:20 X_Open Source
VLAI
EPSS
VEX
Title
GPAC Media File write_nhml.c nhmldump_send_frame null pointer dereference
Summary
A flaw has been found in GPAC 26.02.0. This affects the function nhmldump_send_frame of the file src/filters/write_nhml.c of the component Media File Handler. Executing a manipulation can lead to null pointer dereference. The attack requires local access. The exploit has been published and may be used. This patch is called bd1d94e70e3bef364c07c5a1d94eca5c9f56e160. A patch should be applied to remediate this issue. The project explains: "I would consider most of these more as bugs than vulns but anyway they're good to fix".
Severity
SSVC
Exploitation: poc
Automatable: no
Technical Impact: partial
CISA Coordinator (v2.0.3)
Assigner
References
7 references
| URL | Tags |
|---|---|
| https://vuldb.com/vuln/376379 | vdb-entrytechnical-description |
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| https://vuldb.com/cve/CVE-2026-14790 | third-party-advisory |
| https://vuldb.com/submit/850391 | third-party-advisory |
| https://github.com/gpac/gpac/issues/3596 | exploitissue-tracking |
| https://github.com/gpac/gpac/commit/bd1d94e70e3be… | patch |
| https://github.com/gpac/gpac/ | product |
Impacted products
Credits
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CVE-2026-14324 (GCVE-0-2026-14324)
Vulnerability from cvelistv5 – Published: 2026-07-01 14:09 – Updated: 2026-07-01 17:25
VLAI
EPSS
VEX
Title
Pipewire: raop rtsp null deref
Summary
RAOP module accepts unbounded Content-Length values and does not check the pw_array_add() return.
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
2 references
| URL | Tags |
|---|---|
| https://access.redhat.com/security/cve/CVE-2026-14324 | vdb-entryx_refsource_REDHAT |
| https://bugzilla.redhat.com/show_bug.cgi?id=2495903 | issue-trackingx_refsource_REDHAT |
Impacted products
3 products
| Vendor | Product | Version | |
|---|---|---|---|
| Red Hat | Red Hat Enterprise Linux 10 |
cpe:/o:redhat:enterprise_linux:10 |
|
| 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
2026-07-01 00:00
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CVE-2026-13084 (GCVE-0-2026-13084)
Vulnerability from cvelistv5 – Published: 2026-07-02 23:06 – Updated: 2026-07-06 14:54
VLAI
EPSS
VEX
Title
Null Pointer Dereference in WatchGuard Fireware OS iked Process
Summary
A null pointer dereference vulnerability in WatchGuard Fireware OS may allow a remote unauthenticated attacker to create a denial-of-service (DoS) condition by sending specially crafted IKEv2 messages. This vulnerability affects both the Mobile User VPN with IKEv2 and the Branch Office VPN using IKEv2 when configured with a dynamic gateway peer.
This vulnerability affects Fireware OS 11.10.2 up to and including 11.12.4_Update1, 12.0 up to and including 12.12 and 2025.1 up to and including 2026.2
Severity
SSVC
Exploitation: none
Automatable: yes
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
- CWE-476 - NULL Pointer Dereference
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://www.watchguard.com/wgrd-psirt/advisory/wg… | vendor-advisory |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| WatchGuard | Fireware OS |
Affected:
11.10.2 , ≤ 11.12.4+541730
(semver)
Affected: 12.0 , ≤ 12.12 (semver) Affected: 12.5 , ≤ 12.5.18 (semver) Affected: 2025.1 , ≤ 2026.2 (semver) |
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CVE-2026-11788 (GCVE-0-2026-11788)
Vulnerability from cvelistv5 – Published: 2026-06-09 13:02 – Updated: 2026-06-30 07:48
VLAI
EPSS
VEX
Title
389-ds-base: 389-ds-base: null pointer dereference in deref control plugin ber parser
Summary
A flaw was found in 389 Directory Server. The dereference control plugin does not check for allocation failure before using a BER structure, allowing an unauthenticated remote attacker to crash the LDAP server when the system is under memory pressure.
Severity
5.9 (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://access.redhat.com/security/cve/CVE-2026-11788 | vdb-entryx_refsource_REDHAT |
| https://bugzilla.redhat.com/show_bug.cgi?id=2485423 | issue-trackingx_refsource_REDHAT |
Impacted products
8 products
| Vendor | Product | Version | |
|---|---|---|---|
| Red Hat | Red Hat Directory Server 11 |
cpe:/a:redhat:directory_server:11 |
|
| Red Hat | Red Hat Directory Server 12 |
cpe:/a:redhat:directory_server:12 |
|
| Red Hat | Red Hat Directory Server 13 |
cpe:/a:redhat:directory_server:13 |
|
| 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 Enterprise Linux 9 |
cpe:/o:redhat:enterprise_linux:9 |
Date Public
2026-04-16 00:00
Credits
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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.