Common Weakness Enumeration
CWE-252
AllowedUnchecked Return Value
Abstraction: Base · Status: Draft
The product does not check the return value from a method or function, which can prevent it from detecting unexpected states and conditions.
251 vulnerabilities reference this CWE, most recent first.
CVE-2026-21492 (GCVE-0-2026-21492)
Vulnerability from cvelistv5 – Published: 2026-01-06 20:23 – Updated: 2026-01-07 18:32
VLAI
EPSS
VEX
Title
iccDEV ToneMap Writer has NULL Pointer Member Call
Summary
iccDEV provides a set of libraries and tools that allow for the interaction, manipulation, and application of International Color Consortium (ICC) color management profiles. Versions prior to 2.3.1.2 have a NULL pointer member call vulnerability. This vulnerability affects users of the iccDEV library who process ICC color profiles. Version 2.3.1.2 contains a patch. No known workarounds are available.
Severity
5.5 (Medium)
SSVC
Exploitation: poc
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-01-07 18:32 UTC
Assigner
References
5 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 |
| https://github.com/InternationalColorConsortium/i… | x_refsource_MISC |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| InternationalColorConsortium | iccDEV |
Affected:
< 2.3.1.2
|
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CVE-2026-20793 (GCVE-0-2026-20793)
Vulnerability from cvelistv5 – Published: 2026-05-12 16:34 – Updated: 2026-05-12 17:17
VLAI
EPSS
VEX
Summary
Unchecked return value for some Intel(R) QAT software drivers for Windows before version 1.13 within Ring 3: User Applications may allow a denial of service. Unprivileged software adversary with an authenticated user combined with a low complexity attack may enable denial of service. This result may potentially occur via local access when attack requirements are not present without special internal knowledge and requires no user interaction. The potential vulnerability may impact the confidentiality (none), integrity (none) and availability (low) of the vulnerable system, resulting in subsequent system confidentiality (none), integrity (none) and availability (none) impacts.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-05-12 17:15 UTC
CWE
- Denial of Service
- CWE-252 - Unchecked Return Value
Assigner
References
1 reference
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| n/a | Intel(R) QAT software drivers for Windows |
Affected:
before version 1.13
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GCVE-1-2026-20023 (CVE-2026-85649)
Vulnerability from gna-1 – Published: 2026-09-04 00:00 – Updated: 2026-09-04 12:59
VLAI
EPSS
VEX
Summary
(Holloway) Chew, Kean Ho's Actualizer v1.2.0 and earlier contains a fail-open password validation vulnerability in the Alpha user and root user password loops of Shell/debian-minbase-install.sh. The installer invokes mkpasswd to generate yescrypt password hashes but does not check the command's return value and unconditionally accepts the result. If mkpasswd fails to generate a yescrypt hash, for example because an incompatible mkpasswd implementation or an environment without yescrypt support is used, the resulting password hash variable can be empty and the build proceeds. The resulting image can therefore contain empty password fields for the root and alpha accounts, potentially permitting passwordless authentication depending on the authentication configuration.
Severity
7.9 (High)
Assigner
GNA-1
This instance
References
4 references
| URL | Tags |
|---|---|
| https://github.com/ChewKeanHo/software-actualizer… | release-notespatch |
| https://github.com/ChewKeanHo/software-actualizer… | patch |
| https://github.com/ChewKeanHo/software-actualizer… | |
| https://doi.org/10.5281/zenodo.22169659 | technical-description |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| chewkeanho | software-actualizer |
Affected:
0 , ≤ 1.2.0
(semver)
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CVE-2026-19534 (GCVE-0-2026-19534)
Vulnerability from cvelistv5 – Published: 2026-09-04 17:10 – Updated: 2026-09-04 18:18
VLAI
EPSS
VEX
Title
undici vulnerable to Denial of Service via unrequested WebSocket subprotocol
Summary
undici's WebSocket client crashes the whole Node.js process during the opening handshake when a server responds with a subprotocol that the client never requested. A default WebSocket connection sends no subprotocol, but if the server's 101 response includes a Sec-WebSocket-Protocol header, undici dereferences a null value while checking it against the requested list and throws an uncaught TypeError. Because that code runs inside a microtask with no surrounding error handling, the exception propagates and terminates the process under Node's default behavior, instead of gracefully failing the connection as required by the WebSocket protocol. Any application that opens a WebSocket to an attacker-controlled or compromised server, or over a plaintext connection subject to a machine-in-the-middle, can be crashed remotely without authentication in the default configuration. This affects undici versions from 6.7.0 up to 6.28.1, from 7.0.0 up to 7.29.1, and from 8.0.0 up to 8.10.2. Users should upgrade to undici 6.28.1, 7.29.1, or 8.10.2.
Severity
7.5 (High)
SSVC
Exploitation: none
Automatable: yes
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-04 18:18 UTC
Assigner
References
Impacted products
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CVE-2026-14957 (GCVE-0-2026-14957)
Vulnerability from cvelistv5 – Published: 2026-09-02 02:19 – Updated: 2026-09-02 13:00
VLAI
EPSS
VEX
Title
FIPS mode assertion failure via malicious CERT payload
Summary
In FIPS mode, Libreswan's add_decoded_cert() function calls CERT_ExtractPublicKey() and asserts that the result is not NULL. However, CERT_ExtractPublicKey() returns NULL when public key extraction fails, for example if the RSA exponent is set to 0. A remote attacker can send a malformed X.509 certificate in a CERT payload to trigger the assertion, causing the pluto daemon to abort and restart. Continued exploitation causes a denial of service. No remote code execution is possible. Both IKEv1 and IKEv2 are affected. The vulnerability is only exploitable when both the OS and libreswan are running in FIPS mode and at least one CA certificate is loaded. The CERT payload is processed before peer authentication, so no credentials are needed to exploit this. Configurations using only PreSharedKey (PSK) authentication with no CA certificates loaded in the NSS database are not vulnerable.
Severity
7.5 (High)
SSVC
Exploitation: none
Automatable: yes
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-02 13:00 UTC
Assigner
References
2 references
| URL | Tags |
|---|---|
| https://libreswan.org/security/CVE-2026-14957/CVE… | vendor-advisory |
| https://libreswan.org/security/CVE-2026-14957/ | patch |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| The Libreswan Project | libreswan |
Affected:
3.0 , ≤ 5.3.1
(semver)
Unaffected: 5.3.2 (semver) |
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CVE-2026-11972 (GCVE-0-2026-11972)
Vulnerability from cvelistv5 – Published: 2026-06-23 22:02 – Updated: 2026-08-13 00:28
VLAI
EPSS
VEX
Title
tarfile opened in streaming mode mishandles EOF
Summary
When using the "tarfile" module with a file opened in "streaming mode" (mode="r|") the tarfile module did not properly handle EOF, making archive parsing take exponentially longer.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-06-24 15:33 UTC
Assigner
References
10 references
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Python Software Foundation | CPython |
Affected:
0 , < 3.10.21
(python)
Affected: 3.11.0 , < 3.11.16 (python) Affected: 3.12.0 , < 3.12.14 (python) Affected: 3.13.0 , < 3.13.15 (python) Affected: 3.14.0 , < 3.14.7 (python) Affected: 3.15.0a1 , < 3.15.0b4 (python) |
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CVE-2026-0723 (GCVE-0-2026-0723)
Vulnerability from cvelistv5 – Published: 2026-01-22 13:34 – Updated: 2026-02-26 14:44
VLAI
EPSS
VEX
Title
Unchecked Return Value in GitLab
Summary
GitLab has remediated an issue in GitLab CE/EE affecting all versions from 18.6 before 18.6.4, 18.7 before 18.7.2, and 18.8 before 18.8.2 that could have allowed an individual with existing knowledge of a victim's credential ID to bypass two-factor authentication by submitting forged device responses.
Severity
7.4 (High)
SSVC
Exploitation: none
Automatable: no
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-01-23 04:55 UTC
CWE
- CWE-252 - Unchecked Return Value
Assigner
References
3 references
| URL | Tags |
|---|---|
| https://gitlab.com/gitlab-org/gitlab/-/issues/585333 | issue-trackingpermissions-required |
| https://hackerone.com/reports/3476052 | technical-descriptionexploitpermissions-required |
| https://about.gitlab.com/releases/2026/01/21/patc… |
Impacted products
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CVE-2026-0421 (GCVE-0-2026-0421)
Vulnerability from cvelistv5 – Published: 2026-01-14 22:18 – Updated: 2026-02-26 15:04
VLAI
EPSS
VEX
Summary
A potential vulnerability was reported in the BIOS of L13 Gen 6, L13 Gen 6 2-in-1, L14 Gen 6, and L16 Gen 2 ThinkPads which could result in Secure Boot being disabled even when configured as “On” in the BIOS setup menu. This issue only affects systems where Secure Boot is set to User Mode.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-01-16 04:55 UTC
CWE
- CWE-252 - Unchecked Return Value
Assigner
References
1 reference
Impacted products
4 products
| Vendor | Product | Version | |
|---|---|---|---|
| Lenovo | ThinkPad L13 Gen 6 BIOS |
Affected:
0 , < 1.10
(custom)
cpe:2.3:a:lenovo:thinkpad_l13_gen_6_bios:*:*:*:*:*:*:*:* |
|
| Lenovo | ThinkPad L13 Gen 6 2 in 1 BIOS |
Affected:
0 , < 1.10
(custom)
cpe:2.3:a:lenovo:thinkpad_l13_gen_6_2_in_1_bios:*:*:*:*:*:*:*:* |
|
| Lenovo | ThinkPad L14 Gen 6 BIOS |
Affected:
0 , < 1.06
(custom)
cpe:2.3:a:lenovo:thinkpad_l14_gen_6_bios:*:*:*:*:*:*:*:* |
|
| Lenovo | ThinkPad L16 Gen 2 BIOS |
Affected:
0 , < 1.06
(custom)
cpe:2.3:a:lenovo:thinkpad_l16_gen_2_bios:*:*:*:*:*:*:*:* |
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CVE-2025-66565 (GCVE-0-2025-66565)
Vulnerability from cvelistv5 – Published: 2025-12-09 01:47 – Updated: 2025-12-09 16:03
VLAI
EPSS
VEX
Title
Fiber Utils UUIDv4 and UUID Silent Fallback to Predictable Values
Summary
Fiber Utils is a collection of common functions created for Fiber. In versions 2.0.0-rc.3 and below, when the system's cryptographic random number generator (crypto/rand) fails, both functions silently fall back to returning predictable UUID values, including the zero UUID "00000000-0000-0000-0000-000000000000". The vulnerability occurs through two related but distinct failure paths, both ultimately caused by crypto/rand.Read() failures, compromising the security of all Fiber applications using these functions for security-critical operations. This issue is fixed in version 2.0.0-rc.4.
Severity
SSVC
Exploitation: poc
Automatable: yes
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2025-12-09 14:16 UTC
CWE
Assigner
References
2 references
| URL | Tags |
|---|---|
| https://github.com/gofiber/utils/security/advisor… | x_refsource_CONFIRM |
| https://github.com/gofiber/utils/commit/6c6cf0470… | x_refsource_MISC |
Impacted products
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CVE-2025-64169 (GCVE-0-2025-64169)
Vulnerability from cvelistv5 – Published: 2025-11-21 18:39 – Updated: 2025-11-21 19:05
VLAI
EPSS
VEX
Title
Wazuh NULL pointer dereference in fim_alert line 666
Summary
Wazuh is a free and open source platform used for threat prevention, detection, and response. From version 3.7.0 to before 4.12.0, fim_alert() implementation does not check whether oldsum->md5 is NULL or not before dereferencing it. A compromised agent can cause a crash of analysisd by sending a specially crafted message to the wazuh manager. This issue has been patched in version 4.12.0.
Severity
SSVC
Exploitation: poc
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2025-11-21 19:05 UTC
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://github.com/wazuh/wazuh/security/advisorie… | x_refsource_CONFIRM |
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Mitigation MIT-53
Implementation
Check the results of all functions that return a value and verify that the value is expected.
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
Implementation
Ensure that you account for all possible return values from the function.
Mitigation
Implementation
When designing a function, make sure you return a value or throw an exception in case of an error.
No CAPEC attack patterns related to this CWE.