What is CVE-2025-47779?

CVE-2025-47779 is a high-severity vulnerability in Asterisk, classified under CWE-140. CVSS score: 7.7/10. Published 2025-05-22.

How severe is CVE-2025-47779?

High severity. CVSS v3 base score is 7.7 out of 10.

Is CVE-2025-47779 known to be exploited?

1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.

Vulnerability in Asterisk

CVE-2025-47779

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) authent…

EPSS: 0.003 (51.5th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 7.7 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:N/I:H/A:N.

Affected products

Asterisk — versions < 18.9-cert14, >= 18.10, < 18.26.2, >= 20.0, < 20.7-cert5

Weakness classification (CWE)

Public proof-of-concept exploits

w4zu/Debian_

References

https://github.com/asterisk/asterisk/security/advisories/GHSA-2grh-7mhv-fcfw (x_refsource_CONFIRM)
https://github.com/asterisk/asterisk/blob/master/configs/samples/pjsip.conf.sample (x_refsource_MISC)

Frequently asked questions

What is CVE-2025-47779?: CVE-2025-47779 is a high-severity vulnerability in Asterisk, classified under CWE-140. CVSS score: 7.7/10. Published 2025-05-22.
How severe is CVE-2025-47779?: High severity. CVSS v3 base score is 7.7 out of 10.
Is CVE-2025-47779 known to be exploited?: 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.