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This issue has been patched in the newest ASA Interims and also in FTD 7.4.2.1.
You can check this in https://www.cisco.com/c/en/us/td/docs/security/secure-firewall/release-notes/threat-defense/740/threat-defense-release-notes-74.html#resolved-bugs-7...
Hi, I can confirm this issue also happens on Firepower 1000 Series. In our case the affected devices are FPR-1010 and running different releases from the 9.18.3.x train.
Currently waiting for a list of fixed releases from TAC since the bug descriptio...
Just had a chat with TAC about this. A fix for this is scheduled for release 15.0.2 and 15.5.1. The Defect CSCwi59220 will soon be updated and the fixed releases will be out at the end of April.