What is CVE-2021-26713?

CVE-2021-26713 is a medium-severity vulnerability in Digium Asterisk, classified under Out-of-bounds Write. CVSS score: 6.5/10. Published 2021-02-19.

How severe is CVE-2021-26713?

Medium severity. CVSS v3 base score is 6.5 out of 10.

Buffer overflow in Digium Asterisk

CVE-2021-26713

A stack-based buffer overflow in res_rtp_asterisk.c in Sangoma Asterisk before 16.16.1, 17.x before 17.9.2, and 18.x before 18.2.1 and Certified Asterisk before 16.8-cert6 allows an authenticated WebRTC client to cause an Asterisk crash by…

Vulnerability class: Buffer Overflow

EPSS: 0.018 (76.7th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 6.5 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H.

Affected products

Digium Asterisk
Digium Certified_asterisk — versions 16.8
N/a — versions n/a

Weakness classification (CWE)

CWE-787 — Out-of-bounds Write

References

cve@mitre.org (x_refsource_MISC, Vendor Advisory)
cve@mitre.org (x_refsource_MISC, Vendor Advisory)
cve@mitre.org (x_refsource_MISC, Vendor Advisory)

Frequently asked questions

What is CVE-2021-26713?: CVE-2021-26713 is a medium-severity vulnerability in Digium Asterisk, classified under Out-of-bounds Write. CVSS score: 6.5/10. Published 2021-02-19.
How severe is CVE-2021-26713?: Medium severity. CVSS v3 base score is 6.5 out of 10.