Last Modified: May 05, 2026
Affected Product(s):
BIG-IP LTM
Known Affected Versions:
17.1.1, 17.1.1.1, 17.1.1.2, 17.1.1.3, 17.1.1.4, 17.1.2, 17.1.2.1, 17.1.2.2, 17.1.3, 17.1.3.1, 17.1.3.2, 17.5.1, 17.5.1.2, 17.5.1.3, 17.5.1.4, 17.5.1.5, 17.5.1.6
Opened: Apr 30, 2026 Severity: 3-Major
Some entries in a data-group of type string are never matched in an irule with class lookup or class match equals.
Missing match when it should be matched.
Keys in the data group of type string with a length of precisely 128 characters are not found. Keys with a length different than 128 have no issues.
If somehow possible, avoid using a key of length 128 characters, or use class match begins_with or ends_with
None