#2
BleepingComputer
general
March 30, 2026 at 10:59 UTC
Hackers now exploit critical F5 BIG-IP flaw in attacks, patch now
By Sergiu Gatlan
AI Summary
F5 has reclassified CVE-2025-53521 from a high-severity denial-of-service flaw to a critical remote code execution vulnerability after discovering attackers are exploiting it to deploy webshells on unpatched BIG-IP devices. The vulnerability was initially disclosed in October 2025, and active exploitation is now confirmed in the wild.
Relevance score: 92.0/100
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