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

Forum Discussion

Juergen_Mang's avatar
Juergen_Mang
Icon for MVP rankMVP
May 04, 2026
Solved

Errors with AS3 3.56.0 with F5 17.5.1.6

Hi Folks,   I upgraded my Lab F5s to 17.5.1.6 and now my AS3 declarations are not working anymore. I get following error regardless of the declaration, even an empty declaration throws this err...
devops
  • Juergen_Mang's avatar
    Juergen_Mang
    May 18, 2026

    I got a fixed AS3 Version 3.57.0-12 that fixes this issue in my tests.

Jakub_Slowik's avatar
Jakub_Slowik
Icon for Nimbostratus rankNimbostratus
May 15, 2026

Do you have any updates? It is very sad that on one hand, we have security concerns, and on the other, configuration pipelines are dead

  • J-H_Johansen's avatar
    J-H_Johansen
    Icon for Cirrus rankCirrus
    May 15, 2026

    Haven't heard anything from F5 yet.

    I see they added Hotfix-BIGIP-17.5.1.6.0.63.25-ENG but it basically does the same thing as Hotfix-BIGIP-17.5.1.6.0.39.25-ENG which was for iSeries only. Which makes we wonder why they had me install that on a Velos tenant earlier this week.

    • Juergen_Mang's avatar
      Juergen_Mang
      Icon for MVP rankMVP
      May 16, 2026

      My last state from Friday evening is: F5 has replicated the issue and engineering is working on a fix.

      What I do not understand is, why that has taken so long. The issue is easily replicateable and the error is very clear.