Back to Database
Status published
High
CVE-2021-26712
Incorrect access controls in res_srtp.c in Sangoma Asterisk 13.38.1, 16.16.0,...
Vulnerability 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.
Impact Analysis
Refer to official advisory for detailed impact metrics.
Remediation
Ensure systems are updated to the latest vendor-supplied patch levels.
THREAT MONITOR
Am I Vulnerable?
Launch our assessment wizard to check if your infrastructure is exposed to • CVE-2021-26712
Credits & Attribution
No credits recorded in the NVD database.
References
- https://downloads.asterisk.org/pub/security/
- http://seclists.org/fulldisclosure/2021/Feb/59
- https://downloads.asterisk.org/pub/security/AST-2021-003.html
- https://issues.asterisk.org/jira/browse/ASTERISK-29260
- http://packetstormsecurity.com/files/161473/Asterisk-Project-Security-Advisory-AST-2021-003.html
More from digium
View All →CVE-2022-26651
An issue was discovered in Asterisk through 19.x and Certified...
Critical
9.8
CVE-2022-26499
An SSRF issue was discovered in Asterisk through 19.x. When...
Critical
9.1
CVE-2022-26498
An issue was discovered in Asterisk through 19.x. When using...
High
7.5
CVE-2021-32558
An issue was discovered in Sangoma Asterisk 13.x before 13.38.3,...
High
7.5
CVE-2021-31878
An issue was discovered in PJSIP in Asterisk before 16.19.1...
Medium
6.5
Affected Vendor
digium
View all reports →Affected Software
asterisk, certified asterisk
Vulnerable Versions:
13.0.0, 16.0.0, 17.0.0, 18.0, 16.8
Timeline
Official Publish:
February 18th, 2021
Last Modified:
August 3rd, 2024
Added to House:
July 21st, 2026
CVSS Vectors
V3:
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Weaknesses (CWE)
No CWE data available
MITRE ATT&CK TTPs
No associated TTPs found for this vulnerability.