Bug ID 552430: Expression evaluator in per-request policy VPE might result in system crash

Last Modified: Jul 18, 2026

Affected Product(s):
BIG-IP APM(all modules)

Known Affected Versions:
12.0.0, 12.0.0 hf1, 12.0.0 hf2, 12.0.0 hf3, 12.0.0 hf4

Opened: Oct 14, 2015

Severity: 3-Major

Symptoms

Expression evaluator in per-request policy VPE might result in system crash and failover.

Impact

Traffic disrupted while tmm restarts.

Conditions

When the expression evaluation is asynchronous.

Workaround

None

Fix Information

None

Behavior Change

Guides & references

K10134038: F5 Bug Tracker Filter Names and Tips