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CVE-2026-23740

0.0 · NONE

Asterisk is an open source private branch exchange and telephony toolkit.

Published Feb 6, 2026CWE-427EPSS 0.13%

Overview

CVE-2026-23740 is a none-severity vulnerability. It was published on February 6, 2026 and has a CVSS 3.1 base score of 0.0 (NONE).

This vulnerability has a CVSS 3.1 base score of 0.0, rated NONE. It requires local or adjacent network access to exploit. No authentication or special privileges are required for exploitation.

Technical description

Asterisk is an open source private branch exchange and telephony toolkit. Prior to versions 20.7-cert9, 20.18.2, 21.12.1, 22.8.2, and 23.2.2, when ast_coredumper writes its gdb init and output files to a directory that is world-writable (for example /tmp), an attacker with write permission(which is all users on a linux system) to that directory can cause root to execute arbitrary commands or overwrite arbitrary files by controlling the gdb init file and output paths. This issue has been patched in versions 20.7-cert9, 20.18.2, 21.12.1, 22.8.2, and 23.2.2.

Remediation

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

References

GitHubgithub.com/asterisk/asterisk/security/advisories/GHSA-xpc6-x892-v83c

How CyberStrike helps

Frequently asked questions

What is CVE-2026-23740?

CVE-2026-23740 is a none-severity vulnerability. It was published on February 6, 2026 and has a CVSS 3.1 base score of 0.0 (NONE).

How severe is CVE-2026-23740?

This vulnerability has a CVSS 3.1 base score of 0.0, rated NONE. It requires local or adjacent network access to exploit. No authentication or special privileges are required for exploitation.

How do I fix or remediate CVE-2026-23740?

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

How can CyberStrike help with CVE-2026-23740?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2026-23740 is actually reachable in your own applications and APIs, then verifies each finding before reporting it. That tells you if the weakness is a real, exploitable risk in your environment or a false positive you can safely deprioritize.

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