CVE-2025-49832: 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…

PriorityP339medium6.5CVSS 3.1

AVNACLPRLUINSUCNINAH

EPSS

0.43%

34.2th percentile

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.

Affected

12 ranges

Vendor	Product	Version range	Fixed in
asterisk	asterisk	< 18.26.3	18.26.3
asterisk	asterisk	—	—
asterisk	asterisk	—	—
asterisk	asterisk	—	—
asterisk	asterisk	—	—
debian	asterisk	< asterisk 1:22.5.1~dfsg+~cs6.15.60671435-1 (sid)	asterisk 1:22.5.1~dfsg+~cs6.15.60671435-1 (sid)
sangoma	asterisk	< 18.26.3	18.26.3
sangoma	asterisk	>= 20.0.0 < 20.15.1	20.15.1
sangoma	asterisk	>= 21.0.0 < 21.10.1	21.10.1
sangoma	asterisk	>= 22.0.0 < 22.5.1	22.5.1
sangoma	certified_asterisk	<= 18.9	—
sangoma	certified_asterisk	—	—

CVSS provenance

nvdv3.16.5MEDIUMCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

osv6.5MEDIUM

vendor_debian6.5LOW

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