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Cisco Bug: CSCur50347 - Going to upgrade_control.html without being logged in causes MCU to segf

Last Modified

Sep 17, 2019

Products (15)

  • Cisco TelePresence MCU 4500 Series
  • Cisco TelePresence MCU 4520
  • Cisco TelePresence MCU 4505
  • Cisco TelePresence MCU 4510
  • Cisco TelePresence MCU 5320
  • Cisco TelePresence MCU 4205
  • Cisco TelePresence MCU 4215
  • Cisco TelePresence MCU 4220
  • Cisco TelePresence MCU MSE 8420
  • Cisco TelePresence MCU 4203
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Known Affected Releases


Description (partial)


A vulnerability in the Cisco TelePresence multipoint control unit (MCU) contains a vulnerability that could allow an unauthenticated, remote
attacker to trigger a reload of an affected system.

The vulnerability is due to insufficient sanitization of TCP packets. An attacker could exploit this vulnerability by sending a sequence of TCP
packets to the affected system.

An affected system with software version 4.5(1.45).
Bug details contain sensitive information and therefore require a account to be viewed.

Bug Details Include

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