Last Modified: May 05, 2026
Affected Product(s):
BIG-IP ASM
Known Affected Versions:
15.1.10, 15.1.10.2, 15.1.10.3, 15.1.10.4, 15.1.10.5, 15.1.10.6, 15.1.10.7, 15.1.10.8, 16.1.6, 16.1.6.1, 17.1.3, 17.1.3.1, 17.5.1, 17.5.1.2, 17.5.1.3, 17.5.1.4, 17.5.1.5
Fixed In:
17.5.1.6, 17.1.3.2
Opened: Oct 24, 2025 Severity: 2-Critical
The regex validation string for parameters is intended to be limited to a maximum length of 254 characters, but this validation was not enforced correctly via the REST API.
ASM goes into a restart loop.
A lengthy PRCE expression is set for a parameter using the REST API
None
PCRE Expression with invalid length is no longer allowed through REST API