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.
6305 vulnerabilities reference this CWE, most recent first.
CVE-2026-7262 (GCVE-0-2026-7262)
Vulnerability from cvelistv5 – Published: 2026-05-10 04:00 – Updated: 2026-07-15 00:40
VLAI
EPSS
VEX
Title
NULL pointer dereference in SOAP apache:Map decoder with missing <value>
Summary
In PHP versions 8.2.* before 8.2.31, 8.3.* before 8.3.31, 8.4.* before 8.4.21, and 8.5.* before 8.5.6, when a SOAP server has a typemap configured, the decoding process contains a mistake which checks the wrong variable in case of missing value element. This leads to dereferences a NULL pointer, causing a segmentation fault. This allows a remote unauthenticated attacker to crash the PHP SOAP server process, resulting in denial of service.
Severity
SSVC
Exploitation: none
Automatable: yes
Technical Impact: partial
CISA Coordinator (v2.0.3)
Assigner
References
11 references
| URL | Tags |
|---|---|
| https://github.com/php/php-src/security/advisorie… | vendor-advisory |
| https://access.redhat.com/security/cve/CVE-2026-7262 | vdb-entryx_refsource_REDHAT |
| https://bugzilla.redhat.com/show_bug.cgi?id=2468565 | issue-trackingx_refsource_REDHAT |
| https://security.access.redhat.com/data/csaf/v2/v… | x_sadp-csaf-vex |
| https://access.redhat.com/errata/RHSA-2026:23388 | vendor-advisoryx_refsource_REDHAT |
| https://access.redhat.com/errata/RHSA-2026:22649 | vendor-advisoryx_refsource_REDHAT |
| https://access.redhat.com/errata/RHSA-2026:34354 | vendor-advisoryx_refsource_REDHAT |
| https://access.redhat.com/errata/RHSA-2026:22305 | vendor-advisoryx_refsource_REDHAT |
| https://access.redhat.com/errata/RHSA-2026:22142 | vendor-advisoryx_refsource_REDHAT |
| https://access.redhat.com/errata/RHSA-2026:22143 | vendor-advisoryx_refsource_REDHAT |
| https://access.redhat.com/errata/RHSA-2026:33449 | vendor-advisoryx_refsource_REDHAT |
Impacted products
11 products
| Vendor | Product | Version | |
|---|---|---|---|
| PHP Group | PHP |
Affected:
8.2.* , < 8.2.31
(semver)
Affected: 8.3.* , < 8.3.31 (semver) Affected: 8.4.* , < 8.4.21 (semver) Affected: 8.5.* , < 8.5.6 (semver) |
|
| Red Hat | Red Hat Enterprise Linux 10 |
Unaffected:
0:8.4.21-1.el10_2 , < *
(rpm)
cpe:/o:redhat:enterprise_linux:10.2 |
|
| Red Hat | Red Hat Enterprise Linux 10 |
Unaffected:
0:8.3.31-1.el10_2 , < *
(rpm)
cpe:/o:redhat:enterprise_linux:10.2 |
|
| Red Hat | Red Hat Enterprise Linux 8 |
Unaffected:
8100020260521052503.f7998665 , < *
(rpm)
cpe:/a:redhat:enterprise_linux:8 |
|
| Red Hat | Red Hat Enterprise Linux 8 |
Unaffected:
8100020260604072603.f7998665 , < *
(rpm)
cpe:/a:redhat:enterprise_linux:8 |
|
| Red Hat | Red Hat Enterprise Linux 9 |
Unaffected:
9080020260521113736.9 , < *
(rpm)
cpe:/a:redhat:enterprise_linux:9 |
|
| Red Hat | Red Hat Enterprise Linux 9 |
Unaffected:
9080020260521080715.9 , < *
(rpm)
cpe:/a:redhat:enterprise_linux:9 |
|
| Red Hat | Red Hat Enterprise Linux 9 |
Unaffected:
0:8.0.30-6.el9_8 , < *
(rpm)
cpe:/a:redhat:enterprise_linux:9 |
|
| 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 Hardened Images |
cpe:/a:redhat:hummingbird:1 |
Date Public
2026-05-07 00:00
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CVE-2026-7259 (GCVE-0-2026-7259)
Vulnerability from cvelistv5 – Published: 2026-05-10 04:13 – Updated: 2026-05-11 13:13
VLAI
EPSS
VEX
Title
Null pointer dereference in php_mb_check_encoding() via mb_ereg_search_init()
Summary
In PHP versions 8.2.* before 8.2.31, 8.3.* before 8.3.31, 8.4.* before 8.4.21, and 8.5.* before 8.5.6, a mismatch between encoding lists in Oniguruma and mbfl leads to a NULL pointer dereference, resulting in a segmentation fault and denial of service. The vulnerability is exploitable when user-controlled input can influence the encoding passed to mb_regex_encoding().
Severity
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://github.com/php/php-src/security/advisorie… | vendor-advisory |
Impacted products
Date Public
2026-05-07 00:00
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CVE-2026-6845 (GCVE-0-2026-6845)
Vulnerability from cvelistv5 – Published: 2026-04-22 07:54 – Updated: 2026-07-13 20:58
VLAI
EPSS
VEX
Title
Binutils: binutils: denial of service via crafted elf file
Summary
A flaw was found in binutils, specifically within the `readelf` utility. This vulnerability allows a local attacker to cause a Denial of Service (DoS) by tricking a user into processing a specially crafted Executable and Linkable Format (ELF) file. The exploitation of this flaw can lead to the system becoming unresponsive due to excessive resource consumption or a program crash.
Severity
5 (Medium)
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://access.redhat.com/errata/RHSA-2026:34924 | vendor-advisoryx_refsource_REDHAT |
| https://access.redhat.com/errata/RHSA-2026:39022 | vendor-advisoryx_refsource_REDHAT |
| https://access.redhat.com/security/cve/CVE-2026-6845 | vdb-entryx_refsource_REDHAT |
| https://bugzilla.redhat.com/show_bug.cgi?id=2460012 | issue-trackingx_refsource_REDHAT |
Impacted products
8 products
| Vendor | Product | Version | |
|---|---|---|---|
| Red Hat | Red Hat Hardened Images |
Unaffected:
2.45.1-5.2.hum1 , < *
(rpm)
cpe:/a:redhat:hummingbird:1 |
|
| Red Hat | Red Hat Hardened Images |
Unaffected:
2.46.1-1.hum1 , < *
(rpm)
cpe:/a:redhat:hummingbird:1 |
|
| 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 |
|
| Red Hat | Red Hat OpenShift Container Platform 4 |
cpe:/a:redhat:openshift:4 |
Date Public
2026-04-13 00:00
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CVE-2026-6666 (GCVE-0-2026-6666)
Vulnerability from cvelistv5 – Published: 2026-05-09 00:43 – Updated: 2026-05-11 14:44
VLAI
EPSS
VEX
Title
PgBouncer crash in kill_pool_logins_server_error
Summary
A possible null pointer reference in PgBouncer before 1.25.2 could lead to a crash, if a server sends an error response without SQLSTATE field.
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
1 reference
Credits
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CVE-2026-6526 (GCVE-0-2026-6526)
Vulnerability from cvelistv5 – Published: 2026-04-30 05:34 – Updated: 2026-04-30 15:19
VLAI
EPSS
VEX
Title
NULL Pointer Dereference in Wireshark
Summary
RTSP protocol dissector crash in Wireshark 4.6.0 to 4.6.4
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
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Wireshark Foundation | Wireshark |
Affected:
4.6.0 , < 4.6.5
(semver)
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CVE-2026-6525 (GCVE-0-2026-6525)
Vulnerability from cvelistv5 – Published: 2026-05-02 11:33 – Updated: 2026-05-04 14:59
VLAI
EPSS
VEX
Title
NULL Pointer Dereference in Wireshark
Summary
IEEE 802.11 protocol dissector crash in Wireshark 4.6.0 to 4.6.4
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 , < 4.6.5
(semver)
|
Credits
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CVE-2026-5745 (GCVE-0-2026-5745)
Vulnerability from cvelistv5 – Published: 2026-04-07 14:57 – Updated: 2026-05-03 14:15
VLAI
EPSS
VEX
Title
Libarchive: a null pointer dereference vulnerability exists in the acl parser of libarchive
Summary
A flaw was found in libarchive. A NULL pointer dereference vulnerability exists in the ACL parsing logic, specifically within the archive_acl_from_text_nl() function. When processing a malformed ACL string (such as a bare "d" or "default" tag without subsequent fields), the function fails to perform adequate validation before advancing the pointer. An attacker can exploit this by providing a maliciously crafted archive, causing an application utilizing the libarchive API (such as bsdtar) to crash, resulting in a Denial of Service (DoS).
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
3 references
| URL | Tags |
|---|---|
| https://access.redhat.com/errata/RHSA-2026:8944 | vendor-advisoryx_refsource_REDHAT |
| https://access.redhat.com/security/cve/CVE-2026-5745 | vdb-entryx_refsource_REDHAT |
| https://bugzilla.redhat.com/show_bug.cgi?id=2455921 | issue-trackingx_refsource_REDHAT |
Impacted products
7 products
| Vendor | Product | Version | |
|---|---|---|---|
| Red Hat | Red Hat Hardened Images |
Unaffected:
3.8.7-1.hum1 , < *
(rpm)
cpe:/a:redhat:hummingbird:1 |
|
| 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 |
|
| Red Hat | Red Hat OpenShift Container Platform 4 |
cpe:/a:redhat:openshift:4 |
Date Public
2026-04-07 00:00
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CVE-2026-5590 (GCVE-0-2026-5590)
Vulnerability from cvelistv5 – Published: 2026-04-05 03:34 – Updated: 2026-04-06 14:22
VLAI
EPSS
VEX
Title
net: ip/tcp: Null pointer dereference can be triggered by a race condition
Summary
A race condition during TCP connection teardown can cause tcp_recv() to operate on a connection that has already been released. If tcp_conn_search() returns NULL while processing a SYN packet, a NULL pointer derived from stale context data is passed to tcp_backlog_is_full() and dereferenced without validation, leading to a crash.
Severity
6.4 (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 | |
|---|---|---|---|
| zephyrproject-rtos | Zephyr |
Affected:
* , ≤ 4.3
(git)
|
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CVE-2026-4751 (GCVE-0-2026-4751)
Vulnerability from cvelistv5 – Published: 2026-03-24 05:37 – Updated: 2026-03-24 14:29
VLAI
EPSS
VEX
Title
NULL Pointer Dereference in tmate-io tmate
Summary
NULL Pointer Dereference vulnerability in tmate-io tmate.This issue affects tmate: before 2.4.0.
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
1 reference
| URL | Tags |
|---|---|
| https://github.com/tmate-io/tmate/pull/328 | patch |
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CVE-2026-4743 (GCVE-0-2026-4743)
Vulnerability from cvelistv5 – Published: 2026-03-24 03:25 – Updated: 2026-03-24 14:33
VLAI
EPSS
VEX
Title
Null-Pointer Dereference Vulnerability in taurusxin/ncmdump
Summary
NULL Pointer Dereference vulnerability in taurusxin ncmdump (src/utils modules). This vulnerability is associated with program files cJSON.Cpp.
This issue affects ncmdump: before 1.4.0.
Severity
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://github.com/taurusxin/ncmdump/pull/52 | patch |
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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.