A China-linked threat cluster, UNC5221, is actively targeting organizations using F5 BIG-IP following a confirmed breach of F5's internal development data. The stolen data includes portions of BIG-IP source code and vulnerability information, raising the risk of rapid 0-day discovery and weaponizat…
Published: October 24, 2025
Linked vulnerabilities :
CVE-2025-61882 (CVSS 9.8),
CVE-2025-41430 (CVSS 8.7),
CVE-2025-46706 (CVSS 8.7),
CVE-2025-48008 (CVSS 8.7),
CVE-2025-53474 (CVSS 8.7),
CVE-2025-53521 (CVSS 8.7),
CVE-2025-53856 (CVSS 8.7),
CVE-2025-53868 (CVSS 8.5),
CVE-2025-54479 (CVSS 8.7),
CVE-2025-54854 (CVSS 8.7),
CVE-2025-54858 (CVSS 8.7),
CVE-2025-55036 (CVSS 8.7),
CVE-2025-55669 (CVSS 8.7),
CVE-2025-58096 (CVSS 8.2),
CVE-2025-58120 (CVSS 8.7),
CVE-2025-59478 (CVSS 8.7),
CVE-2025-59781 (CVSS 8.7),
CVE-2025-60016 (CVSS 8.7),
CVE-2025-61938 (CVSS 8.7),
CVE-2025-61951 (CVSS 8.7),
CVE-2025-61955 (CVSS 8.5),
CVE-2025-61960 (CVSS 8.7),
CVE-2025-61974 (CVSS 8.7),
CVE-2025-57780 (CVSS 8.5),
CVE-2025-58071 (CVSS 8.7),
CVE-2025-61935 (CVSS 8.7),
CVE-2025-61990 (CVSS 8.7)
Downloadable IOCs: 3