CVE-2025-54995

MEDIUM EPSS 35.9%
Published Aug 28, 202510mo ago · Modified Jun 17, 20262w ago
6.5 CVSS 3.1
Medium
Find Similar
Published Aug 28, 2025 10mo ago
Last Modified Jun 17, 2026 2w ago

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.

CVSS Details

Base Score
6.5
Exploitability
2.8
Impact
3.6
Vector string
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Attack Vector Network
Attack Complexity Low
Privileges Required Low
User Interaction None
Scope Unchanged
Confidentiality None
Integrity None
Availability High

Threat Intelligence

EPSS Exploit Probability
35.9% percentile
Exploit & Patch Status
Public Exploit Known
Patch Available

Weaknesses 2

CWE-1286
CWE-400 Uncontrolled Resource Consumption Resource Mgmt

Affected Products 21

VendorProductVersionRange
sangomaasterisk* <18.26.4
sangomacertified_asterisk* <18.9
sangomacertified_asterisk18.9any
sangomacertified_asterisk18.9any
sangomacertified_asterisk18.9any
sangomacertified_asterisk18.9any
sangomacertified_asterisk18.9any
sangomacertified_asterisk18.9any
sangomacertified_asterisk18.9any
sangomacertified_asterisk18.9any
sangomacertified_asterisk18.9any
sangomacertified_asterisk18.9any
sangomacertified_asterisk18.9any
sangomacertified_asterisk18.9any
sangomacertified_asterisk18.9any
sangomacertified_asterisk18.9any
sangomacertified_asterisk18.9any
sangomacertified_asterisk18.9any
sangomacertified_asterisk18.9any
sangomacertified_asterisk18.9any
sangomacertified_asterisk18.9any

References 6

  • github.com https://github.com/asterisk/asterisk/commit/0278f5bde14565c6838a6ec39bc21aee0cde56a9
    Patch
  • github.com https://github.com/asterisk/asterisk/commit/eafcd7a451dcd007dddf324ac37dd55a4808338d
    Patch
  • github.com https://github.com/asterisk/asterisk/pull/1405
    Issue Tracking
  • github.com https://github.com/asterisk/asterisk/pull/1406
    Issue Tracking
  • github.com https://github.com/asterisk/asterisk/security/advisories/GHSA-557q-795j-wfx2
    ExploitVendor Advisory
  • lists.debian.org https://lists.debian.org/debian-lts-announce/2025/10/msg00006.html

Remediation

  • github.com https://github.com/asterisk/asterisk/commit/0278f5bde14565c6838a6ec39bc21aee0cde56a9
    Patch
  • github.com https://github.com/asterisk/asterisk/commit/eafcd7a451dcd007dddf324ac37dd55a4808338d
    Patch