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Cisco Bug: CSCte52527 - ASA CPU > 64% for long period causing failure of CUP 8.0 SIP Fed traffic

Last Modified

Nov 09, 2016

Products (2)

  • Cisco ASA 5500-X Series Firewalls
  • Cisco ASA 5580 Adaptive Security Appliance

Known Affected Releases

8.0 8.1 8.2 8.3(0.16)

Description (partial)


CPU goes from 10% to 64%.


The following conditions must be all met to see the symptoms:
- Running phone proxy or IME with TLS proxy involved.
- When tls proxy cannot send packets due to TCP flow control is in force.
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Bug Details Include

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  • Status
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