CVE-2020-3297: Cisco SF200-24 Firmware

Critical severity, CVSS 9.8. EPSS: 3% chance of exploitation in the next 30 days.

A vulnerability in session management for the web-based interface of Cisco Small Business Smart and Managed Switches could allow an unauthenticated, remote attacker to defeat authentication protections and gain unauthorized access to the management interface. The attacker could obtain the privileges of the highjacked session account, which could include administrator privileges on the device. The vulnerability is due to the use of weak entropy generation for session identifier values. An attacker could exploit this vulnerability to determine a current session identifier through brute force and reuse that session identifier to take over an ongoing session. In this way, an attacker could take actions within the management interface with privileges up to the level of the administrative user.

Affected products

Cisco SF200-24 Firmware: affected versions not specified
Cisco SF200-24fp Firmware: affected versions not specified
Cisco SF200-24p Firmware: affected versions not specified
Cisco SF200-48 Firmware: affected versions not specified
Cisco SF200-48p Firmware: affected versions not specified
Cisco SF200E-24 Firmware: affected versions not specified
Cisco SF200E-24p Firmware: affected versions not specified
Cisco SF200E-48 Firmware: affected versions not specified
Cisco SF200E-48p Firmware: affected versions not specified
Cisco SF250-24 Firmware: before 2.5.5.47 (fixed in 2.5.5.47)
Cisco SF250-24p Firmware: before 2.5.5.47 (fixed in 2.5.5.47)
Cisco SF250-48 Firmware: before 2.5.5.47 (fixed in 2.5.5.47)
Cisco SF250-48hp Firmware: before 2.5.5.47 (fixed in 2.5.5.47)
Cisco SF300-08 Firmware: affected versions not specified
Cisco SF300-24 Firmware: affected versions not specified
Cisco SF300-24mp Firmware: affected versions not specified
Cisco SF300-24p Firmware: affected versions not specified
Cisco SF300-24pp Firmware: affected versions not specified
Cisco SF300-48 Firmware: affected versions not specified
Cisco SF300-48p Firmware: affected versions not specified
Cisco SF300-48pp Firmware: affected versions not specified
Cisco SF302-08 Firmware: affected versions not specified
Cisco SF302-08mp Firmware: affected versions not specified
Cisco SF302-08mpp Firmware: affected versions not specified
Cisco SF302-08p Firmware: affected versions not specified
and 93 more

Published 2020-07-02. Last modified 2026-06-17.