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Vulnerabilities CVE-2025-53521

CVE-2025-53521

Medium
Open
KEV
TLP:CLEAR

F5 BIG-IP Stack-Based Buffer Overflow Vulnerability

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Description

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

Details

EPSS Score
2.21%

81th percentile

Confidence
100%
CISA KEV
Date Added
Mar 27, 2026
Patch Due
Mar 30, 2026
Required Action
Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.
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