MEDIUMVulnerability
Global

F5 BIG-IP Vulnerability Reclassified as RCE, Under Exploitation

Monday, March 30, 2026 at 06:24 PM UTC·Source: Dark Reading

Updated: Wednesday, April 1, 2026 at 07:13 PM UTC

Executive Summary

CVE-2025-53521 was initially disclosed in October as a high-severity denial-of-service (DoS) flaw, but new information has revealed the bug is actually much more dangerous.

Analysis

CVE-2025-53521 was initially disclosed in October as a high-severity denial-of-service (DoS) flaw, but new information has revealed the bug is actually much more dangerous.

Indicators of Compromise (1)

CVE (1)
CVE-2025-53521
NVDMITRE CVE
Source Attribution

Originally published by Dark Reading on Mar 30, 2026.

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