PT-2026-2742 · Microsoft · Windows Cloud Files Mini Filter Driver+1

Vimal Sindh · Published 2026-01-13 · Updated 2026-01-13 · CVE-2026-20940

Positive Technologies (AI Summary)

CVSS v3.1

7.8

High

Base vector

AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Name of the Vulnerable Software and Affected Versions Windows Cloud Files Mini Filter Driver (affected versions not specified)

Description A heap-based buffer overflow exists in the Windows Cloud Files Mini Filter Driver. This issue could allow an authorized attacker to elevate privileges locally.

Recommendations At the moment, there is no information about a newer version that contains a fix for this vulnerability.

Untrusted Pointer Dereference

Weakness Enumeration

CWE-822

Related Identifiers

BDU:2026-00394

CVE-2026-20940

Affected Products

Windows

Windows Cloud Files Mini Filter Driver

References · 7

• http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2026-20940 · Security Note
• https://osv.dev/vulnerability/CVE-2026-20940 · Vendor Advisory
• https://msrc.microsoft.com/update-guide/en-US/advisory/CVE-2026-20940 · Vendor Advisory
• https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-20940 · Vendor Advisory
• https://bdu.fstec.ru/vul/2026-00394 · Security Note
• https://nvd.nist.gov/vuln/detail/CVE-2026-20940 · Security Note
• https://twitter.com/CVEnew/status/2011181539644874982 · Twitter Post