CVE intelligence

CVE-2025-53521

F5 BIG-IP Stack-Based Buffer Overflow Vulnerability

F5 · Published 2025-10-15 · CVSS

CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N

AVAttack Vector: Network
ACAttack Complexity: Low
ATAttack Requirements: None
PRPrivileges Required: None
UIUser Interaction: None
VCVulnerable System Confidentiality: High
VIVulnerable System Integrity: High
VAVulnerable System Availability: High
SCSubsequent System Confidentiality: None
SISubsequent System Integrity: None
SASubsequent System Availability: None

critical · KEV listed 2026-03-27 · Action due 2026-03-30