F5 BIG-IP Stack-Based Buffer Overflow Vulnerability

Public source report. This item is not matched to your stack and does not establish whether you are affected.

• NewsExploited · CISA KEVF5 · BIG-IP

  F5 BIG-IP Stack-Based Buffer Overflow Vulnerability

  CVE-2025-53521

  F5 BIG-IP APM contains a stack-based buffer overflow vulnerability that could allow a threat actor to achieve remote code execution.

  CISA's required action · due 30 Mar 2026 for U.S. federal civilian agencies

  Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.

  Cited by CISA: my.f5.com · my.f5.com · my.f5.com · nvd.nist.gov

  Added to KEV 27 Mar 2026 · Source checked 4 Nov 2026, 16:35 UTC · CISA KEV entry

  Loading voting…