Vulnerability Monitor

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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, 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.

Published

2025-08-01T18:15:52.667

Last Modified

2025-08-25T17:42:27.407

Status

Analyzed

Source

[email protected]

Severity

CVSSv3.1: 6.5 (MEDIUM)

Weaknesses
  • Type: Secondary
    CWE-476
Affected Vendors & Products
Type Vendor Product Version/Range Vulnerable?
Application sangoma asterisk < 18.26.3 Yes
Application sangoma asterisk < 20.15.1 Yes
Application sangoma asterisk < 21.10.1 Yes
Application sangoma asterisk < 22.5.1 Yes
Application sangoma certified_asterisk ≤ 18.9 Yes
Application sangoma certified_asterisk 20.7 Yes
Application sangoma certified_asterisk 20.7 Yes
Application sangoma certified_asterisk 20.7 Yes
Application sangoma certified_asterisk 20.7 Yes
Application sangoma certified_asterisk 20.7 Yes
Application sangoma certified_asterisk 20.7 Yes
Application sangoma certified_asterisk 20.7 Yes
Application sangoma certified_asterisk 20.7 Yes
References