CVE-2026-83991
Missing authentication for critical function in Windows Cloud Files Mini Filter Driver allows an authorized attacker to perform tampering locally.
Scoring
- Severity
- MEDIUM
- CVSS base score
- 5.5
- CVSS vector
- CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N/E:U/RL:O/RC:C
- EPSS probability
- 0.35%
- CWE
- CWE-306
- Published
- 2026-09-08
- Last modified
- 2026-09-10
Affected products
- Microsoft Windows 10 Version 1809
- Microsoft Windows 10 Version 21H2
- Microsoft Windows 10 Version 22H2
- Microsoft Windows 11 version 23H2
- Microsoft Windows 11 Version 23H2
- Microsoft Windows 11 Version 24H2
- Microsoft Windows 11 Version 25H2
- Microsoft Windows 11 version 26H1
Weakness type
Related vulnerabilities
- CVE-2026-88062 — OmniRoute ACP Custom-Agent Remote Code Execution (RCE)
- CVE-2026-9336 — IBM WebSphere Application Server prior to 9.0.5.29 and 8.5.5.31 are affected by multiple vulnerabilities
- CVE-2026-88018 — rclone serve s3: --auth-proxy without --auth-key authenticates nobody - full SigV4 signature bypass
- CVE-2026-88285 — GV-LPC2011/LPC2211 - Unauthenticated PTZ Control Service
- CVE-2026-49362 — Apache Artemis, Apache ActiveMQ Artemis: Missing Authentication in CORE Protocol Handler Allows Unauthorized Queue Creation
- CVE-2026-49363 — Apache Artemis, Apache ActiveMQ Artemis: Pre-Authentication Information Disclosure in CORE Protocol Topology Subscription
- CVE-2026-49364 — Apache Artemis, Apache Artemis, Apache ActiveMQ Artemis, Apache ActiveMQ Artemis: Pre-Authentication Cluster Credential Exposure to Discovered Peers
- CVE-2026-57967 — Apache Artemis, Apache ActiveMQ Artemis: Missing authentication on CORE protocol session reattachment