CVE-2025-47779

MEDIUM EPSS 33.5%
Published May 22, 20251y ago · Modified Jun 17, 20262w ago
6.5 CVSS 3.1
Medium
Find Similar
Published May 22, 2025 1y ago
Last Modified Jun 17, 2026 2w ago

Description

Asterisk is an open-source private branch exchange (PBX). Prior to versions 18.26.2, 20.14.1, 21.9.1, and 22.4.1 of Asterisk and versions 18.9-cert14 and 20.7-cert5 of certified-asterisk, SIP requests of the type MESSAGE (RFC 3428) authentication do not get proper alignment. An authenticated attacker can spoof any user identity to send spam messages to the user with their authorization token. Abuse of this security issue allows authenticated attackers to send fake chat messages can be spoofed to appear to come from trusted entities. Even administrators who follow Security best practices and Security Considerations can be impacted. Therefore, abuse can lead to spam and enable social engineering, phishing and similar attacks. Versions 18.26.2, 20.14.1, 21.9.1, and 22.4.1 of Asterisk and versions 18.9-cert14 and 20.7-cert5 of certified-asterisk fix the issue.

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:H/A:N
Attack Vector Network
Attack Complexity Low
Privileges Required Low
User Interaction None
Scope Unchanged
Confidentiality None
Integrity High
Availability None

Threat Intelligence

EPSS Exploit Probability
33.5% percentile
Exploit & Patch Status
Public Exploit Known
No Patch Available

Weaknesses 2

CWE-140
CWE-792

Affected Products 28

VendorProductVersionRange
sangomaasterisk* <18.26.2
sangomaasterisk*≥20.0.0  –  <20.14.1
sangomaasterisk*≥21.0.0  –  <21.9.1
sangomaasterisk*≥22.0.0  –  <22.4.1
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_asterisk20.7any
sangomacertified_asterisk20.7any
sangomacertified_asterisk20.7any
sangomacertified_asterisk20.7any
sangomacertified_asterisk20.7any
sangomacertified_asterisk20.7any

References 3

  • github.com https://github.com/asterisk/asterisk/blob/master/configs/samples/pjsip.conf.sample
    Product
  • github.com https://github.com/asterisk/asterisk/security/advisories/GHSA-2grh-7mhv-fcfw
    ExploitVendor Advisory
  • lists.debian.org https://lists.debian.org/debian-lts-announce/2025/06/msg00003.html

Remediation

No remediation data recorded yet

Check vendor advisories and the NVD entry for patch availability.