CVE-2026-69820

HIGH
MEDIUM Priority: 0.03 BB Relevance: 36/100
Published: 2026-09-08 Modified: 2026-10-30 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: High
UI: None
S: Changed
C: High
I: High
A: High

Description

Heap-based buffer overflow in Windows Hello allows an authorized attacker to elevate privileges locally.

Affected Software (7)

VendorProductVersion
Microsoft Windows 10 Version 21H2 10.0.19044.0 < 10.0.19044.7725
Microsoft Windows 10 Version 22H2 10.0.19045.0 < 10.0.19045.7725
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 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 26H1 10.0.28000.0 < 10.0.28000.2954

References & Advisories (1)

Bug Bounty Relevance

36 / 100
✓ Low complexity
✓ No user interaction

CVSS Score

8.2 / 10.0 v3.1
CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H/E:U/RL:O/RC:C

EPSS — Exploitation Probability

0.35%
Raw Score 0.003480
Percentile 28.5%
Date 2026-10-30

Intelligence Sources

mitre ref →