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Vulnerability · Published Aug 28, 2025 · Assigned by GitHub_M

CVE-2025-54995Asterisk remotely exploitable leak of RTP UDP ports and internal resources

Medium 6.5

In plain English

A medium-severity uncontrolled resource consumption in asterisk from asterisk. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 0.5% (higher than 44% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.

Severity (CVSS 3.1)6.5Medium
Exploit odds (30 days)0.5%top 56.4% of all CVEs
Exploited in the wildNo reportsCISA SSVC: poc
Attack toolingNoneno public tooling known

Official description

Asterisk is an open source private branch exchange and telephony toolkit. Prior to versions 18.26.4 and 18.9-cert17, RTP UDP ports and internal resources can leak due to a lack of session termination. This could result in leaks and resource exhaustion. This issue has been patched in versions 18.26.4 and 18.9-cert17.

Affected packages & fixed versions

EcosystemPackageFixed inAdvisory
Debian:14asterisk1:22.2.0~dfsg+~cs6.15.60671435-1DEBIAN-CVE-2025-54995
Ubuntu:22.04:LTSasteriskno fix listedUBUNTU-CVE-2025-54995
Ubuntu:24.04:LTSasteriskno fix listedUBUNTU-CVE-2025-54995

Affected products (as reported)

VendorProductVersions
asterisk asterisk < 18.26.4< 18.9-cert17

Weakness: CWE-1286, CWE-400 · Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

References