CVE-2025-54995
MEDIUMAsterisk < 18.26.4 and Certified Asterisk < 18.9-cert17 - Resource Exhaustion via RTP Session Leak
Title source: llmDescription
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.
References (6)
Core 6
Core References
Exploit, Vendor Advisory x_refsource_confirm
https://github.com/asterisk/asterisk/security/advisories/GHSA-557q-795j-wfx2
Issue Tracking x_refsource_misc
https://github.com/asterisk/asterisk/pull/1405
Issue Tracking x_refsource_misc
https://github.com/asterisk/asterisk/pull/1406
Patch x_refsource_misc
https://github.com/asterisk/asterisk/commit/0278f5bde14565c6838a6ec39bc21aee0cde56a9
Patch x_refsource_misc
https://github.com/asterisk/asterisk/commit/eafcd7a451dcd007dddf324ac37dd55a4808338d
Scores
CVSS v3
6.5
EPSS
0.0044
EPSS Percentile
35.3%
Attack Vector
NETWORK
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
CISA SSVC
Vulnrichment
Exploitation
poc
Automatable
no
Technical Impact
partial
Details
CWE
CWE-1286
CWE-400
Status
published
Products (3)
sangoma/asterisk
< 18.26.4
sangoma/certified_asterisk
18.9 cert1 (19 CPE variants)
sangoma/certified_asterisk
< 18.9
Published
Aug 28, 2025
Tracked Since
Feb 18, 2026