Last Modified: Aug 19, 2026
Affected Product(s):
BIG-IP ASM, BIG-IQ
Known Affected Versions:
11.6.0, 11.6.0 hf1, 11.6.0 hf2, 11.6.0 hf3, 11.6.0 hf4, 11.6.0 hf5, 11.6.0 hf6, 11.6.0 hf7, 11.6.0 hf8, 12.0.0, 12.0.0 hf1, 12.0.0 hf2, 12.0.0 hf3, 12.0.0 hf4
Fixed In:
12.1.0, 11.6.1, 11.5.4
Opened: Oct 29, 2015 Severity: 2-Critical
The lastUpdateMicros field is meant to be updated if a user changes a custom signature, but it is not.
Checking for updated signatures does not return the expected result.
REST client is used to look at/filter the signatures collection (/mgmt/tm/asm/sigantures)
None.
REST: The lastUpdateMicros field is now correctly updated after updating a user defined signature.