Mar 27, 2026 - For details about updated CVE-2025-53521 (BIG-IP APM vulnerability), refer to K000156741.

Forum Discussion

LukasM_184208's avatar
LukasM_184208
Icon for Nimbostratus rankNimbostratus
Dec 01, 2015

ASM url extensions "learning" new extensions

Hi, I have a problem with ASM trying to suggest extensions that don't exist like .55 .66 .78 etc.   We have a web apps that put a lot of data into urls and and sometimes there are 2-3 random chara...
ASM Advanced WAF
auto-learn
big-ip
extension
security
Vitaliy_Savrans's avatar
Vitaliy_Savrans
Icon for Nacreous rankNacreous
Dec 01, 2015

Hi,

you can use wildcard entities. Wildcard syntax:

 Wildcard Character     Matches
 *                         All characters
 ?                         Any single character
 [abcde]                   Exactly one of the characters listed
 [!abcde]                  Any character not listed
 [a-e]                 Exactly one character in the range
 [!a-e]                    Any character not in the range