PT-2026-58230 · Microsoft · Windows Kernel

Published 2026-07-14 · Updated 2026-07-14 · CVE-2026-54132

Positive Technologies (AI Summary)

CVSS v3.1

6.8

Medium

Base vector

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

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

Description A heap-based buffer overflow exists in the Windows Kernel. This issue allows an unauthorized attacker with physical access to the system to elevate their privileges. A heap-based buffer overflow occurs when a program writes more data to a heap memory buffer than it can hold, potentially overwriting adjacent memory.

Recommendations Apply the July updates to resolve this issue.

Fix

Heap Based Buffer Overflow

Weakness Enumeration

CWE-122

Related Identifiers

CVE-2026-54132

Affected Products

Windows Kernel

References · 3

• https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-54132 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2026-54132 · Security Note
• https://twitter.com/windowsforum/status/2077144904862437745 · Twitter Post