CVE-2025-49832

MediumCVSS 6.5/10Last modified Jun 17, 2026

Description

Asterisk is an open source private branch exchange and telephony toolkit. In versions up to and including 18.26.2, between 20.00.0 and 20.15.0, 20.7-cert6, 21.00.0, 22.00.0 through 22.5.0, there is a remote DoS and possible RCE condition in `asterisk/res/res_stir_shaken /verification.c` that can be exploited when an attacker can set an arbitrary Identity header, or STIR/SHAKEN is enabled, with verification set in the SIP profile associated with the endpoint to be attacked. This is fixed in versions 18.26.3, 20.7-cert6, 20.15.1, 21.10.1 and 22.5.1.

Metrics

CVSS 3.1 6.5/10CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Weakness enumeration

CWE-476

Affected software

VendorProductVersions
asteriskasterisk< 18.26.3; >= 20.00.0, < 20.15.1; >= 21.00.0, < 21.10.1; >= 22.00.0, < 22.5.1; >= 20.7-cert6, < 20.7-cert7

References

Timeline

Published
Aug 1, 2025
Last modified
Jun 17, 2026
NVD status
Analyzed

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CVE-2025-49832: Medium severity, CVSS 6.5 | Vulnix