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Cisco Bug: CSCur84591 - Cat4500 crash due to memory corruption

Last Modified

Dec 13, 2018

Products (1)

  • Cisco Catalyst 4000 Series Switches

Known Affected Releases


Description (partial)


Cluster commander switch crashes due to memory corruption


This defect affects all IOS and IOS-XE platforms that support the
clustering feature. This defect is not confined to the Catalyst
4500/4900 series. 

The switch must be configured as a cluster commander in order to be
vulnerable to this defect. 

The crash occurs when a packet with a specific format is received on
the UDP port on which the cluster commander is listening for SNMP
response messages from cluster members.
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Bug Details Include

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