PT-2026-58161 · Microsoft · Ntfs

Published 2026-07-14 · Updated 2026-07-15 · CVE-2026-49789

Positive Technologies (AI Summary)

CVSS v3.1

7.3

High

Base vector

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

Name of the Vulnerable Software and Affected Versions Windows NTFS (affected versions not specified)

Description A stack-based buffer overflow in the Windows NTFS file system allows an authorized attacker to elevate privileges locally, potentially granting a low-privilege account administrative access.

Recommendations Install the July updates to resolve this issue.

Fix

Stack Overflow

Weakness Enumeration

CWE-121

Related Identifiers

CVE-2026-49789

Affected Products

Ntfs

References · 3

• https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-49789 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2026-49789 · Security Note
• https://twitter.com/windowsforum/status/2077228949046689859 · Twitter Post