VULNERABILITY INTELLIGENCE

CVE-2021-34716

CVSS score6.7 MEDIUM
EPSS probability2.40%
CISA KEVNot currently listed
Published2021-08-18
Last modified2026-06-17
CVSS vectorCVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:L

Description

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.

Weakness classification

  • psirt@cisco.com: CWE-460
  • nvd@nist.gov: CWE-755

Primary references