CVE-2021-26712
7.5
HIGH
CVSS 3.1
EPSS 2.2%
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.
How to fix CVE-2021-26712
To remediate CVE-2021-26712, upgrade the affected package to a fixed version below.
- Alpine/asterisk—upgrade to 16.16.1-r0 or later
Is CVE-2021-26712 being exploited?
Low — EPSS is 2.2%, meaning exploitation activity has not been observed at scale.
Affected packages (1)
- from 0, < 16.16.1-r0
CVSS scores
| Source | Version | Severity | Vector |
|---|---|---|---|
| osv | CVSS 3.1 | HIGH7.5 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H |