CVE-2025-47779
HIGHDescription
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.
How to fix
TridentStack Control can deploy fixes like this automatically across your Windows, macOS, and Linux fleet. See how it works
Remediation is compiled from vendor and distribution security advisories. Always confirm against the linked source for your exact version and platform.
CVSS v3 Vector
Exploitability
Impact
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:N/I:H/A:N
Exploit Intelligence
Low risk: more likely to be exploited than 37% of all known CVEs.
References
Related Vulnerabilities
Other CWE-140 vulnerabilities, ordered by exploit likelihood. View all
| CVE | Severity | CVSS | EPSS | Exploited | Fix |
|---|---|---|---|---|---|
| CVE-2023-31208 | High | 8.3 | 1.0% | - | Fix |
| CVE-2023-38488 | High | 7.1 | 0.9% | - | Fix |
| CVE-2023-6157 | High | 7.6 | 0.9% | - | - |
| CVE-2023-6156 | High | 7.6 | 0.9% | - | - |
| CVE-2024-42482 | Medium | 4.8 | 0.8% | - | Fix |
| CVE-2024-38865 | High | 8.8 | 0.8% | - | Fix |
Common questions
How do I fix CVE-2025-47779?
Upgrade asterisk on debian 11 to 1:16.28.0~dfsg-0+deb11u7 or later.
Is CVE-2025-47779 being actively exploited?
Not that we know of. CVE-2025-47779 is not in the CISA Known Exploited Vulnerabilities catalog. Its EPSS score of 0.46% is the estimated probability that it will be exploited in the next 30 days. That is higher than 37% of all scored CVEs.
How severe is CVE-2025-47779?
CVE-2025-47779 has a CVSS v3 base score of 7.7, rated high. CVSS rates the technical impact if the vulnerability is exploited, not how likely that is, so weigh it alongside the exploit-prediction score when you decide what to patch first.
What does CVE-2025-47779 affect?
Published advisories record a fix for asterisk (Debian). Only products with a sourced advisory are listed, so treat this as what we can cite rather than a complete inventory.
Embed a live status badge for CVE-2025-47779
Markdown
[](https://tridentstack.com/cve/CVE-2025-47779)HTML
<a href="https://tridentstack.com/cve/CVE-2025-47779"><img src="https://tridentstack.com/cve/badge/CVE-2025-47779.svg" alt="CVE-2025-47779"></a>Find and fix vulnerabilities across your fleet
TridentStack Control continuously scans your Windows, macOS, and Linux fleet for known vulnerabilities, prioritizes them by severity and active exploitation, and patches them automatically.
This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2025-11-03.