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Cisco Bug: CSCun77435 - Cisco Small Business SPA3x/5x series local code execution vulnerability

Last Modified

Aug 06, 2018

Products (11)

  • Cisco Small Business SPA500 Series IP Phones
  • Cisco SPA301 1 Line IP Phone
  • Cisco SPA512G 1-Line GigE IP Phone
  • Cisco SPA514G 4-Line GigE IP Phone
  • Cisco SPA504G 4-Line IP Phone
  • Cisco SPA501G 8-Line IP Phone
  • Cisco SPA508G 8-Line IP Phone
  • Cisco SPA303 3 Line IP Phone
  • Cisco SPA502G 1-Line IP Phone
  • Cisco SPA525G 5-line IP Phone with Color Display
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Known Affected Releases


Description (partial)

A vulnerability in the Cisco Small Business SPA500 and SPA300 Series IP Phones could allow an unauthenticated, local attacker to gain access to
the file system of the affected device.

The vulnerability is due to insufficient authentication implementation in the debug console interface. An attacker could exploit this
vulnerability by sending specially crafted commands to the debug interface of the affected device. An exploit could allow the attacker to execute
arbitrary commands and access system memory with elevated privileges.

Default configuration.
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Bug Details Include

  • Full Description (including symptoms, conditions and workarounds)
  • Status
  • Severity
  • Known Fixed Releases
  • Related Community Discussions
  • Number of Related Support Cases
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