CVE-2026-57203 Asterisk: Local privilege escalation through ast_loggrabber's world-writable helper location
- Exploited in the wild
- Not known
- Fix
- Available
What is CVE-2026-57203?
CVE-2026-57203 is a medium-severity vulnerability in asterisk, published on 27 Oct 2026.
Official description
Asterisk is an open source private branch exchange and telephony toolkit. Prior to Asterisk 20.20.1, 21.12.3, 22.10.1, 23.4.1 and Certified Asterisk 20.7-cert11, 22.8-cert3, `ast_loggrabber` executes a `Python script` from the world-writable `/tmp` directory. An attacker already authorized to open a shell session on the Asterisk server may place a malicious script there and gain elevated privileges or execute code when an administrator runs `ast_loggrabber` as a user with elevated privileges. This issue is fixed in Asterisk 20.20.1, 21.12.3, 22.10.1, 23.4.1 and Certified Asterisk 20.7-cert11, 22.8-cert3.
Weakness: CWE-426
Which versions are affected by CVE-2026-57203?
How do I fix CVE-2026-57203?
Upgrade to a fixed version.
Is CVE-2026-57203 being exploited?
There is no known exploitation of CVE-2026-57203 in the wild and no public exploit code.
Sources
Also known as DEBIAN-CVE-2026-57203, GHSA-xgj6-2gc5-5x9c, UBUNTU-CVE-2026-57203.