CVE-2025-47779

mediumpriority · track · 26EPSS 0.005 · 45 %ileDEEURUUS

grimoire priorityP3 · Track

Exploitable?

—

no known exploitation

Likely / severe?

0.53% (45th) EPSS

CVSS 6.5 · medium

Is it mine?

33 products

Check your exposure

Who says so?

4 sources

cnnvd · enisa_euvd · fstec_bdu · cert_bund

EPSS · scored 2026-10-27

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

Technical severity, 0–10. One row per scoring source.

7.7

010

base score 0–10 · higher = more severe · hover a vector to decode⚠ sources disagree · medium–high · 6–7.7

v3.16.5mediumCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:Nprimary · NVD / NIST USexploitability 2.8 · impact 3.6

v3.17.7highAV:N/AC:L/PR:L/UI:N/S:C/C:N/I:H/A:Nsecondary · FSTEC (BDU) RU

v3.17.7highCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:N/I:H/A:Nsecondary · ENISA EU

v3.17.7highCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:N/I:H/A:Nsecondary · security-advisories@github.comexploitability 3.1 · impact 4

v3.16mediumCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N/E:Usecondary · CVSS-BT (t0sche)

ssvc

A stakeholder decision — act, attend, or track — from exploitation and impact.

Exploitation: poc · Automatable: yes · Technical Impact: partialcoordinatorcisa_ssvcUS

weaknesses

The CWE weakness classes this flaw belongs to.

CWE-140USCWE-140USCWE-792USCWE-792US

affected products (33)

Products and version ranges known to be affected.

Debian Linuxall versionscert_bundDEcpe:/o:debian:debian_linux:-
Fedora Linuxall versionscert_bundDEcpe:/o:fedoraproject:fedora:-
Open Source Asterisk <18.26.2all versionscert_bundDE
Open Source Asterisk <18.9-cert14all versionscert_bundDE
Open Source Asterisk <20.14.1all versionscert_bundDE
Open Source Asterisk <20.7-cert5all versionscert_bundDE
Open Source Asterisk <21.9.1all versionscert_bundDE
Open Source Asterisk <22.4.1all versionscert_bundDE
Open Source Asterisk< 18.26.2cert_bundDE
Open Source Asterisk< 18.9-cert14cert_bundDE
Open Source Asterisk< 20.14.1cert_bundDE
Open Source Asterisk< 20.7-cert5cert_bundDE
Open Source Asterisk< 21.9.1cert_bundDE
Open Source Asterisk< 22.4.1cert_bundDE
asterisk asterisk≤ < 18.9-cert14enisa_euvdEU
asterisk asterisk18.10, → 18.26.2enisa_euvdEU
asterisk asterisk20.0, → 20.7-cert5enisa_euvdEU
asterisk asterisk20.8, → 20.14.1enisa_euvdEU
asterisk asterisk21.0, → 21.9.1enisa_euvdEU
asterisk asterisk22.0, → 22.4.1enisa_euvdEU

showing 20 of 33

advisories (1)

Vendor and ecosystem advisories describing this.

WID-SEC-W-2025-1135Asterisk: Mehrere SchwachstellenDeutsch2025-05-22csaf · cert_bundDE
Ein Angreifer kann mehrere Schwachstellen in Asterisk ausnutzen, um falsche Informationen darzustellen und um Sicherheitsvorkehrungen zu umgehen.

also known as (4)

Other names and identifiers for this entity.

sources

Which sources assert this record, and when.

cnnvd enisa_euvd fstec_bdu cert_bund NVD CVE.org MITRE

published 2025-05-22modified 2026-06-17

references (9)

External citations — patches, advisories, analysis.

scry

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