Description
F5 BIG-IP APM contains a stack-based buffer overflow vulnerability that could allow a threat actor to achieve remote...
Required Action
Fix: Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.
References
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Frequently Asked Questions
What is CVE-2025-53521?
CVE-2025-53521 (F5 BIG-IP Stack-Based Buffer Overflow Vulnerability) is a vulnerability with a CVSS score of 9.8 (CRITICAL). F5 BIG-IP APM contains a stack-based buffer overflow vulnerability that could allow a threat actor to achieve remote...
How do I fix CVE-2025-53521?
Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.
How severe is CVE-2025-53521?
CVE-2025-53521 has a CVSS score of 9.8, classified as CRITICAL. This vulnerability is in the CISA Known Exploited Vulnerabilities (KEV) catalog, meaning it has been actively exploited in the wild.
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