CVE-2025-54995

mediumpriority · track · 0EPSS 0.005 · 41 %ileDEEURUUS

grimoire priorityP3 · Track

Exploitable?

—

no known exploitation

Likely / severe?

0.49% (41st) EPSS

CVSS 6.5 · medium

Is it mine?

21 products

Check your exposure

Who says so?

5 sources

cnnvd · enisa_euvd · fstec_bdu · cert_bund

EPSS · scored 2026-10-24

Asterisk is an open source private branch exchange and telephony toolkit. Prior to versions 18.26.4 and 18.9-cert17, RTP UDP ports and internal resources can leak due to a lack of session termination. This could result in leaks and resource exhaustion. This issue has been patched in versions 18.26.4 and 18.9-cert17.

cvss

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

6.5

010

base score 0–10 · higher = more severe · hover a vector to decode

v3.16.5mediumAV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:Hsecondary · FSTEC (BDU) RU

v3.16.5mediumCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:Hsecondary · ENISA EU

v3.16.5mediumCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:Hsecondary · security-advisories@github.comexploitability 2.8 · impact 3.6

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

ssvc

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

Exploitation: poc · Automatable: no · Technical Impact: partialcoordinatorcisa_ssvcUS

weaknesses

The CWE weakness classes this flaw belongs to.

CWE-1286USCWE-399USCWE-400US

affected products (21)

Products and version ranges known to be affected.

Debian Linuxall versionscert_bundDEcpe:/o:debian:debian_linux:-
Fedora Linuxall versionscert_bundDEcpe:/o:fedoraproject:fedora:-
Gentoo Linuxall versionscert_bundDEcpe:/o:gentoo:linux:-
Open Source Asterisk <18.26.4all versionscert_bundDE
Open Source Asterisk <18.9-cert17all versionscert_bundDE
Open Source Asterisk <20.15.2all versionscert_bundDE
Open Source Asterisk <21.10.2all versionscert_bundDE
Open Source Asterisk <22.5.2all versionscert_bundDE
Open Source Asterisk< 18.26.4cert_bundDE
Open Source Asterisk< 18.9-cert17cert_bundDE
Open Source Asterisk< 20.15.2cert_bundDE
Open Source Asterisk< 21.10.2cert_bundDE
Open Source Asterisk< 22.5.2cert_bundDE
asterisk asterisk≤ < 18.9-cert17enisa_euvdEU
asterisk asterisk≤ < 18.26.4enisa_euvdEU
Digium, Inc. Asterisk≤ 18.26.4fstec_bduRU
ООО «Ред Софт» РЕД ОС≤ 7.3fstec_bduRU
Сообщество свободного программного обеспечения Debian GNU/Linux≤ 11fstec_bduRU
sangoma asterisk< 18.26.4nvdUScpe:2.3:a:sangoma:asterisk:*:*:*:*:*:*:*:*
sangoma certified asterisk< 18.9nvdUScpe:2.3:a:sangoma:certified_asterisk:*:*:*:*:*:*:*:*

showing 20 of 21

advisories (1)

Vendor and ecosystem advisories describing this.

WID-SEC-W-2025-1926Asterisk: Mehrere Schwachstellen ermöglichen Denial of ServiceDeutsch2025-08-28csaf · cert_bundDE
Ein Angreifer kann mehrere Schwachstellen in Asterisk ausnutzen, um einen Denial of Service Angriff durchzuführen.

also known as (3)

Other names and identifiers for this entity.

sources

Which sources assert this record, and when.

cnnvd enisa_euvd fstec_bdu cert_bund nvd NVD CVE.org MITRE

published 2025-08-28modified 2026-06-17

references (19)

External citations — patches, advisories, analysis.

scry

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