Detections
Analytics

CVE-2021-26712

high

Description

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.

References

http://seclists.org/fulldisclosure/2021/Feb/59

http://packetstormsecurity.com/files/161473/Asterisk-Project-Security-Advisory-AST-2021-003.html

https://issues.asterisk.org/jira/browse/ASTERISK-29260

https://downloads.asterisk.org/pub/security/AST-2021-003.html

https://downloads.asterisk.org/pub/security/

Details

Source: Mitre, NVD

Published: 2021-02-18

Updated: 2026-06-17

Risk Information

CVSS v2

Base Score: 5

Vector: CVSS2#AV:N/AC:L/Au:N/C:N/I:N/A:P

Severity: Medium

CVSS v3

Base Score: 7.5

Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Severity: High

EPSS

EPSS: 0.00898