CVE-2023-20157: Cisco Business 250-16p-2g Firmware

Critical severity, CVSS 9.8. EPSS: 1.2% chance of exploitation in the next 30 days.

Multiple vulnerabilities in the web-based user interface of certain Cisco Small Business Series Switches could allow an unauthenticated, remote attacker to cause a denial of service (DoS) condition or execute arbitrary code with root privileges on an affected device. These vulnerabilities are due to improper validation of requests that are sent to the web interface. For more information about these vulnerabilities, see the Details section of this advisory.

Affected products

  • Cisco Business 250-16p-2g Firmware: affected versions not specified
  • Cisco Business 250-16t-2g Firmware: affected versions not specified
  • Cisco Business 250-24fp-4g Firmware: affected versions not specified
  • Cisco Business 250-24fp-4x Firmware: affected versions not specified
  • Cisco Business 250-24p-4g Firmware: affected versions not specified
  • Cisco Business 250-24p-4x Firmware: affected versions not specified
  • Cisco Business 250-24pp-4g Firmware: affected versions not specified
  • Cisco Business 250-24t-4g Firmware: affected versions not specified
  • Cisco Business 250-24t-4x Firmware: affected versions not specified
  • Cisco Business 250-48p-4g Firmware: affected versions not specified
  • Cisco Business 250-48p-4x Firmware: affected versions not specified
  • Cisco Business 250-48pp-4g Firmware: affected versions not specified
  • Cisco Business 250-48t-4g Firmware: affected versions not specified
  • Cisco Business 250-48t-4x Firmware: affected versions not specified
  • Cisco Business 250-8fp-E-2g Firmware: affected versions not specified
  • Cisco Business 250-8p-E-2g Firmware: affected versions not specified
  • Cisco Business 250-8pp-D Firmware: affected versions not specified
  • Cisco Business 250-8pp-E-2g Firmware: affected versions not specified
  • Cisco Business 250-8t-D Firmware: affected versions not specified
  • Cisco Business 250-8t-E-2g Firmware: affected versions not specified
  • Cisco Business 350-12np-4x Firmware: affected versions not specified
  • Cisco Business 350-12xs Firmware: affected versions not specified
  • Cisco Business 350-12xt Firmware: affected versions not specified
  • Cisco Business 350-16fp-2g Firmware: affected versions not specified
  • Cisco Business 350-16p-2g Firmware: affected versions not specified
  • and 204 more

Published 2023-05-18. Last modified 2026-06-17.