CVE-2021-26712

Incorrect access controls in res_srtp.c in Sangoma Asterisk 13.38.1, 16.16.0, 17.9.1, and 18.2.0 and Certified Asterisk 16.8-cert5 allow a remote unauthenticated attacker to prematurely terminate secure calls by replaying SRTP packets.

• http://packetstormsecurity.com/files/161473/Asterisk-Project-Security-Advisory-AST-2021-003.htmlThird Party Advisory
• http://seclists.org/fulldisclosure/2021/Feb/59Mailing List, Third Party Advisory
• https://downloads.asterisk.org/pub/security/Vendor Advisory
• https://downloads.asterisk.org/pub/security/AST-2021-003.htmlVendor Advisory
• https://issues.asterisk.org/jira/browse/ASTERISK-29260Issue Tracking, Patch, Vendor Advisory
• http://packetstormsecurity.com/files/161473/Asterisk-Project-Security-Advisory-AST-2021-003.htmlThird Party Advisory
• http://seclists.org/fulldisclosure/2021/Feb/59Mailing List, Third Party Advisory
• https://downloads.asterisk.org/pub/security/Vendor Advisory
• https://downloads.asterisk.org/pub/security/AST-2021-003.htmlVendor Advisory
• https://issues.asterisk.org/jira/browse/ASTERISK-29260Issue Tracking, Patch, Vendor Advisory

Published

Feb 18, 2021

Last Modified

Jun 17, 2026

Status

Modified

• How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
• Autonomous PentestingAI agents that find and validate exploitable vulnerabilities like this one across your applications.
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