How severe is CVE-2021-34716?

Medium severity. CVSS v3 base score is 6.7 out of 10.

Vulnerability in Cisco Telepresence Video Communication Server (Vcs) Expressway

CVE-2021-34716

A vulnerability in the web-based management interface of Cisco Expressway Series and Cisco TelePresence Video Communication Server (VCS) could allow an authenticated, remote attacker to execute arbitrary code on the underlying operating system as the root user. This vulnerability is due to incorrect handling of certain crafted software images that are uploaded to the affected device. An attacker could exploit this vulnerability by authenticating to the system as an administrative user and then uploading specific crafted software images to the affected device. A successful exploit could allow the attacker to execute arbitrary code on the underlying operating system as the root user.

EPSS: 0.024 (82.9th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 6.7 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:L.

Affected products

Weakness classification (CWE)

References

psirt@cisco.com (x_refsource_CISCO, vendor-advisory, Patch, Vendor Advisory)

Frequently asked questions

What is CVE-2021-34716?: CVE-2021-34716 is a medium-severity vulnerability in Cisco Telepresence Video Communication Server (Vcs) Expressway, classified under CWE-460. CVSS score: 6.7/10. Published 2021-08-18.
How severe is CVE-2021-34716?: Medium severity. CVSS v3 base score is 6.7 out of 10.