PT-2026-47906 · Microsoft · Windows Nt Os Kernel+1

Published 2026-06-09 · Updated 2026-06-10 · CVE-2026-42980

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 NT OS Kernel (affected versions not specified)

Description An integer underflow (wrap or wraparound) in the Windows NT OS Kernel allows an authorized attacker to elevate privileges locally. This issue enables a user with a local foothold to gain higher-level permissions on the system.

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

LPE

Heap Based Buffer Overflow

Integer Underflow

Weakness Enumeration

CWE-122

CWE-191

Related Identifiers

CVE-2026-42980

Affected Products

Windows

Windows Nt Os Kernel

References · 5

• https://nvd.nist.gov/vuln/detail/CVE-2026-42980 · Security Note
• https://msrc.microsoft.com/update-guide/en-US/advisory/CVE-2026-42980 · Vendor Advisory
• http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2026-42980 · Security Note
• https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-42980 · Vendor Advisory
• https://twitter.com/windowsforum/status/2064533923233685862 · Twitter Post