Is CVE-2025-47779 in the CISA KEV catalog?

No. CVE-2025-47779 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2025-47779?

CVE-2025-47779 has a CVSS v3 base score of 7.7 (HIGH).

What is the EPSS score for CVE-2025-47779?

CVE-2025-47779 has an EPSS score of 0.44% (36th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2025-47779?

Upgrade asterisk on debian 11 to 1:16.28.0~dfsg-0+deb11u7 or later.

CVE & CISA-KEV Catalog

CVE-2025-47779

HIGH

7.7

CVSS v3

NVD

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.

CWE-140 CWE-792

How to fix

Remediation Available

asteriskDebian

Fixed in:1:16.28.0~dfsg-0+deb11u7CVE-2025-47779

Fixed in:1:22.4.1~dfsg+~cs6.15.60671435-1CVE-2025-47779

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

Attack VectorNetwork

Attack ComplexityLow

Privileges RequiredLow

User InteractionNone

ScopeChanged

Impact

ConfidentialityNone

IntegrityHigh

AvailabilityNone

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:N/I:H/A:N

Exploit Intelligence

0.44%probability of exploitation in 30 days

36thpercentile

Low risk: more likely to be exploited than 36% of all known CVEs.

References

Exploit1

github.com

Product1

github.com

Other references1

lists.debian.org

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-2023-6157	High	7.6	0.9%	-	-
CVE-2023-6156	High	7.6	0.9%	-	-
CVE-2024-42482	Medium	4.8	0.8%	-	Fix
CVE-2023-38488	High	7.1	0.8%	-	Fix
CVE-2024-38865	High	8.8	0.8%	-	Fix

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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.