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Cisco Bug: CSCul41447 - ASA: Memory leak with WebVPN and HTTP server enabled simultaneously

Last Modified

Nov 27, 2020

Products (1)

  • Cisco Adaptive Security Appliance (ASA) Software

Known Affected Releases


Description (partial)

If an ASA with WebVPN enabled also has 'http' commands configured, the ASA will see a memory leak each time WebVPN is disabled and re-enabled. The total bytes consumed by the 65536 binsize in the output of 'show memory detail' will continue to rise.

This can be triggered either through manual configuration on an Active firewall, or through the use of the 'write standby' command on a Standby firewall (note that 'write standby' should not be used under normal circumstances).
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Bug Details Include

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