CVE-2020-3147: Cisco SF300-08 Firmware

High severity, CVSS 7.5. EPSS: 2.3% chance of exploitation in the next 30 days.

A vulnerability in the web UI of Cisco Small Business Switches could allow an unauthenticated, remote attacker to cause a denial of service (DoS) condition on an affected device. The vulnerability is due to improper validation of requests sent to the web interface. An attacker could exploit this vulnerability by sending a malicious request to the web interface of an affected device. A successful exploit could allow the attacker to cause an unexpected reload of the device, resulting in a DoS condition. This vulnerability affects firmware releases prior than 1.3.7.18

Affected products

  • Cisco SF300-08 Firmware: before 1.3.7.18 (fixed in 1.3.7.18)
  • Cisco SF300-24 Firmware: before 1.3.7.18 (fixed in 1.3.7.18)
  • Cisco SF300-24mp Firmware: before 1.3.7.18 (fixed in 1.3.7.18)
  • Cisco SF300-24p Firmware: before 1.3.7.18 (fixed in 1.3.7.18)
  • Cisco SF300-24pp Firmware: before 1.3.7.18 (fixed in 1.3.7.18)
  • Cisco SF300-48 Firmware: before 1.3.7.18 (fixed in 1.3.7.18)
  • Cisco SF300-48p Firmware: before 1.3.7.18 (fixed in 1.3.7.18)
  • Cisco SF300-48pp Firmware: before 1.3.7.18 (fixed in 1.3.7.18)
  • Cisco SF302-08 Firmware: before 1.3.7.18 (fixed in 1.3.7.18)
  • Cisco SF302-08mp Firmware: before 1.3.7.18 (fixed in 1.3.7.18)
  • Cisco SF302-08mpp Firmware: before 1.3.7.18 (fixed in 1.3.7.18)
  • Cisco SF302-08p Firmware: before 1.3.7.18 (fixed in 1.3.7.18)
  • Cisco SF302-08pp Firmware: before 1.3.7.18 (fixed in 1.3.7.18)
  • Cisco SF500-24 Firmware: before 1.3.7.18 (fixed in 1.3.7.18)
  • Cisco SF500-24p Firmware: before 1.3.7.18 (fixed in 1.3.7.18)
  • Cisco SF500-48 Firmware: before 1.3.7.18 (fixed in 1.3.7.18)
  • Cisco SF500-48p Firmware: before 1.3.7.18 (fixed in 1.3.7.18)
  • Cisco SG200-08 Firmware: before 1.3.7.18 (fixed in 1.3.7.18)
  • Cisco SG200-08p Firmware: before 1.3.7.18 (fixed in 1.3.7.18)
  • Cisco SG200-10fp Firmware: before 1.3.7.18 (fixed in 1.3.7.18)
  • Cisco SG200-18 Firmware: before 1.3.7.18 (fixed in 1.3.7.18)
  • Cisco SG200-24 Firmware: before 1.3.7.18 (fixed in 1.3.7.18)
  • Cisco SG200-24fp Firmware: before 1.3.7.18 (fixed in 1.3.7.18)
  • Cisco SG200-24p Firmware: before 1.3.7.18 (fixed in 1.3.7.18)
  • Cisco SG200-26 Firmware: before 1.3.7.18 (fixed in 1.3.7.18)
  • and 32 more

Published 2020-01-30. Last modified 2026-06-17.