Bug ID 2244393: TLS 1.3 sessions are unnecessarily cached

Last Modified: Apr 07, 2026

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

Known Affected Versions:
17.1.3.1, 17.5.1.4, 17.5.1.5

Opened: Mar 13, 2026

Severity: 3-Major

Symptoms

More sessions than necessary are getting cached which can cause an increase in memory usage.

Impact

Memory usage increases.

Conditions

TLS 1.3 is enabled and used.

Workaround

Disable the Retain Certificate setting in the SSL profile (https://my.f5.com/manage/s/article/K19802202).

Fix Information

None

Behavior Change

Guides & references

K10134038: F5 Bug Tracker Filter Names and Tips