Remote Denial of Service and Potential Remote Code Execution in Asterisk by Digium
CVE-2025-49832

6.5MEDIUM

Key Information:

Vendor

Asterisk

Status
Asterisk
Vendor
CVE Published:
1 August 2025

What is CVE-2025-49832?

Asterisk, an open-source telephony toolkit, has a vulnerability that could allow remote attackers to exploit the system under certain conditions. This vulnerability exists in the verification.c module where an attacker can manipulate the Identity header, especially when STIR/SHAKEN is enabled with verification in the SIP profile. If successful, this could lead to a Denial of Service (DoS) situation or possible remote code execution. The issue has been addressed in later versions, ensuring that users are protected against these types of attacks.

Human OS v1.0:
Ageing Is an Unpatched Zero-Day Vulnerability.

Remediate biological technical debt. Prime Ageing uses 95% high-purity SIRT6 activation to maintain genomic integrity and bolster systemic resilience.

Deploy the Patch

Affected Version(s)

asterisk < 18.26.3 < 18.26.3

asterisk >= 20.00.0, < 20.15.1 < 20.00.0, 20.15.1

asterisk >= 21.00.0, < 21.10.1 < 21.00.0, 21.10.1

References

https://github.com/asterisk/asterisk/security/advisories/...
x_refsource_CONFIRM

CVSS V3.1

Score:
6.5
Severity:
MEDIUM
Confidentiality:
None
Integrity:
None
Availability:
None
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
Low
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

JSON
.