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CISA Known Exploited Vulnerabilities

KEV additions — December 2025

20 CVEs entered the KEV catalog in December 2025.

Added December 29, 20251

CVECVSSEPSSDue date
CVE-2025-148477.564.8 %January 19, 2026

Added December 22, 20251

CVECVSSEPSSDue date
CVE-2023-521638.867.5 %January 12, 2026

Added December 19, 20251

CVECVSSEPSSDue date
CVE-2025-147339.844.2 %December 26, 2025

Added December 17, 20253

CVECVSSEPSSDue date
CVE-2025-20393105.0 %December 24, 2025
CVE-2025-406026.60.3 %December 24, 2025
CVE-2025-593749.831.8 %January 7, 2026

Added December 16, 20251

CVECVSSEPSSDue date
CVE-2025-597189.82.4 %December 23, 2025

Added December 15, 20252

CVECVSSEPSSDue date
CVE-2025-146119.858.3 %January 5, 2026
CVE-2025-435298.80.0 %January 5, 2026

Added December 12, 20252

CVECVSSEPSSDue date
CVE-2018-40638.80.8 %January 2, 2026
CVE-2025-141748.80.8 %January 2, 2026

Added December 11, 20251

CVECVSSEPSSDue date
CVE-2025-583609.885.7 %January 1, 2026

Added December 9, 20252

CVECVSSEPSSDue date
CVE-2025-62187.86.6 %December 30, 2025
CVE-2025-622217.82.7 %December 30, 2025

Added December 8, 20252

CVECVSSEPSSDue date
CVE-2022-370559.869.8 %December 29, 2025
CVE-2025-666449.83.1 %December 29, 2025

Added December 5, 20251

CVECVSSEPSSDue date
CVE-2025-55182ransomware1059.6 %December 12, 2025

Added December 3, 20251

CVECVSSEPSSDue date
CVE-2021-268288.880.0 %December 24, 2025

Added December 2, 20252

CVECVSSEPSSDue date
CVE-2025-485727.80.3 %December 23, 2025
CVE-2025-486335.50.2 %December 23, 2025