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

Forum Discussion

joyride_us's avatar
joyride_us
Icon for Altostratus rankAltostratus
Apr 20, 2021

Problem with upgrade from 13.1.3.3 to 13.1.3.6

Hi guys!   when upgrading the system refieses becuase of a certificate cipher valid in 13.1.3.3 and invallid in 13.1.3.6.   Thanks!  
big-ip
LTM
security
Enes_Afsin_Al's avatar
Enes_Afsin_Al
Icon for MVP rankMVP
Apr 20, 2021

Hi joyride_us,

 

I may have encountered this problem before. I think the configuration contains kedh keyword.

You must remove kedh keyword or replace it to edh.

 

https://support.f5.com/csp/article/K82327396

 

If cipher is not kedh, you can remove or change the corresponding cipher in configuration.