← Database

CVE-2021-34739

HIGH CVSS: 8.1 Published: 2021-11-04 Modified: 2026-06-17

Description

A vulnerability in the web-based management interface of multiple Cisco Small Business Series Switches could allow an unauthenticated, remote attacker to replay valid user session credentials and gain unauthorized access to the web-based management interface of an affected device. This vulnerability is due to insufficient expiration of session credentials. An attacker could exploit this vulnerability by conducting a man-in-the-middle attack against an affected device to intercept valid session credentials and then replaying the intercepted credentials toward the same device at a later time. A successful exploit could allow the attacker to access the web-based management interface with administrator privileges.

Affected Platforms

Cisco Sg500X-48PCisco Sf250-18Cisco Cbs350-16T-2GCisco Sf350-10PCisco Sf550X-48Cisco Sg550X-24PCisco Sg500X-48 FirmwareCisco Sg500X-24PCisco Sf250-48HpCisco Sx350X-52

Weakness Type

CWE-613, CWE-613

References