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

CVE-2026-42980 · Published 2026-06-09 · Updated 2026-07-23

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 10 Version 1607

Description An integer underflow (wrap or wraparound) in the Windows NT OS Kernel, specifically within the WMI (Windows Management Instrumentation) subsystem, allows an authorized local attacker to elevate privileges to NT AUTHORITYSYSTEM. This issue occurs due to incorrect handling of integer values during data formation, which leads to an out-of-bounds write in dynamic memory.

Recommendations Update Windows 10 Version 1607 to the latest patched version.

Exploit

Fix

DoS

LPE

Heap Based Buffer Overflow

Integer Underflow

Weakness Enumeration

CWE-122

CWE-191

Related Identifiers

BDU:2026-08327

CVE-2026-42980

Affected Products

Windows

Windows Nt Os Kernel

References · 11

• 🔥 https://github.com/G4sp4rCS/CVE-2026-42980-POC · Exploit
• https://bdu.fstec.ru/vul/2026-08327 · Security Note
• https://msrc.microsoft.com/update-guide/en-US/advisory/CVE-2026-42980 · Vendor Advisory
• https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-42980 · Vendor Advisory
• http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2026-42980 · Security Note
• https://nvd.nist.gov/vuln/detail/CVE-2026-42980 · Security Note
• https://twitter.com/ptdbugs/status/2074389350251462857 · Twitter Post
• https://twitter.com/Dinosn/status/2078722379887370403 · Twitter Post
• https://t.me/cveNotify/214019 · Telegram Post
• https://reddit.com/r/KibernetinisSaugumas/comments/1v3e9vq/kibernetinio_saugumo_radar_20260722 · Reddit Post
• https://twitter.com/windowsforum/status/2064533923233685862 · Twitter Post