VULNERABILITY INTELLIGENCE

CVE-2026-20839

CVSS score5.5 MEDIUM

EPSS probability0.48%

CISA KEVNot currently listed

Published2026-01-13

Last modified2026-07-30

CVSS vectorCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N/E:U/RL:O/RC:C

Description

Improper access control in Windows Client-Side Caching (CSC) Service allows an authorized attacker to disclose information locally.