CVE-2025-53521 — Actively Exploited: BIG-IP (F5)
F5 BIG-IP APM contains a stack-based buffer overflow vulnerability that could allow a threat actor to achieve remote code execution.
| CVE ID | CVE-2025-53521 |
|---|---|
| Vendor | F5 |
| Product | BIG-IP |
| Vulnerability name | F5 BIG-IP Stack-Based Buffer Overflow Vulnerability |
| Date added | 2026-03-27 |
| Remediation due | 2026-03-30 |
| Known ransomware use | Unknown |
| 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. |
| Description | F5 BIG-IP APM contains a stack-based buffer overflow vulnerability that could allow a threat actor to achieve remote code execution. |
| Source | CISA Known Exploited Vulnerabilities |
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