Bug ID 2183917: BIG-IP might fail to update received TCP window when tm.tcpstopblindinjection is enabled

Last Modified: Dec 19, 2025

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

Known Affected Versions:
17.1.0, 17.1.0.1, 17.1.0.2, 17.1.0.3, 17.1.1, 17.1.1.1, 17.1.1.2, 17.1.1.3, 17.1.1.4, 17.1.2, 17.1.2.1, 17.1.2.2, 17.1.3, 17.5.0, 17.5.1, 17.5.1.2, 17.5.1.3, 21.0.0

Opened: Dec 11, 2025

Severity: 3-Major

Symptoms

BIG-IP might fail to update received TCP window when tm.tcpstopblindinjection db variable is enabled (CVE-2025-58424).

Impact

TCP transfer might stall.

Conditions

The tm.tcpstopblindinjection db variable is enabled (CVE-2025-58424 ). This does not always occur.

Workaround

None

Fix Information

None

Behavior Change

Guides & references

K10134038: F5 Bug Tracker Filter Names and Tips