CVE-2026-80083

HIGH
MEDIUM Priority: 0.03 BB Relevance: 43/100
Published: 2026-09-08 Modified: 2026-10-31 First seen: 2026-10-30 Status: active

Attack Surface

Low Complexity No Interaction Conf. Impact Integ. Impact Scope Change

CVSS Vector Breakdown

AV: Local
AC: Low
PR: Low
UI: None
S: Changed
C: High
I: High
A: High

Description

Untrusted pointer dereference in Windows Hyper-V allows an authorized attacker to execute code locally.

Affected Software (16)

VendorProductVersion
Microsoft Windows 11 Version 23H2 10.0.22631.0 < 10.0.22631.7582
Microsoft Windows 11 Version 23H2 10.0.22631.0 < 10.0.22631.7582
Microsoft Windows 11 Version 24H2 10.0.26100.0 < 10.0.26100.9445
Microsoft Windows 11 Version 24H2 10.0.26100.0 < 10.0.26100.9445
Microsoft Windows 11 Version 25H2 10.0.26200.0 < 10.0.26200.9445
Microsoft Windows 11 Version 25H2 10.0.26200.0 < 10.0.26200.9445
Microsoft Windows 11 version 23H2 10.0.22631.0 < 10.0.22631.7582
Microsoft Windows 11 version 23H2 10.0.22631.0 < 10.0.22631.7582
Microsoft Windows 11 version 26H1 10.0.28000.0 < 10.0.28000.2954
Microsoft Windows 11 version 26H1 10.0.28000.0 < 10.0.28000.2954
Microsoft Windows Server 2022 10.0.20348.0 < 10.0.20348.5622
Microsoft Windows Server 2022 10.0.20348.0 < 10.0.20348.5622
Microsoft Windows Server 2025 10.0.26100.0 < 10.0.26100.33438
Microsoft Windows Server 2025 10.0.26100.0 < 10.0.26100.33438
Microsoft Windows Server 2025 (Server Core installation) 10.0.26100.0 < 10.0.26100.33438
Microsoft Windows Server 2025 (Server Core installation) 10.0.26100.0 < 10.0.26100.33438

References & Advisories (1)

Bug Bounty Relevance

43 / 100
✓ Low complexity
✓ No user interaction

CVSS Score

8.8 / 10.0 v3.1
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H/E:U/RL:O/RC:C

EPSS — Exploitation Probability

0.33%
Raw Score 0.003330
Percentile 26.7%
Date 2026-11-06

EPSS Trend

2026-11-06
0.00333
2026-11-05
0.00333
2026-11-04
0.00333
2026-11-03
0.00333
2026-11-02
0.00333
2026-11-01
0.00333
2026-10-31
0.00333
2026-10-30
0.00333

Intelligence Sources

mitre ref →