Vulnerability 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.
CVSS Score
MEDIUM
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Sangoma | Asterisk | < 18.26.3 |
| Sangoma | Certified Asterisk | <= 18.9 |
Related Weaknesses (CWE)
References
- https://github.com/asterisk/asterisk/security/advisories/GHSA-mrq5-74j5-f5crExploitVendor Advisory
FAQ
What is CVE-2025-49832?
CVE-2025-49832 is a vulnerability with a CVSS score of 6.5 (MEDIUM). 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 ...
How severe is CVE-2025-49832?
CVE-2025-49832 has been rated MEDIUM with a CVSS base score of 6.5/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2025-49832?
Check the references section above for vendor advisories and patch information. Affected products include: Sangoma Asterisk, Sangoma Certified Asterisk.