CVE-2026-83504

MEDIUM
MEDIUM Priority: 0.01 BB Relevance: 24/100
Published: 2026-10-13 Modified: 2026-10-29 First seen: 2026-10-29 Status: active

Attack Surface

No Interaction Conf. Impact

CVSS Vector Breakdown

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

Description

Time-of-check time-of-use (toctou) race condition in Windows SmartScreen allows an authorized attacker to disclose information locally.

Weakness Classification (1)

Affected Software (9)

VendorProductVersion
Microsoft Windows 11 version 23H2 10.0.22631.0 < 10.0.22631.7582
microsoft windows_11_23h2 < 10.0.22631.7652
microsoft windows_11_23h2 < 10.0.22631.7652
microsoft windows_11_24h2 < 10.0.26100.9711
microsoft windows_11_24h2 < 10.0.26100.9711
microsoft windows_11_25h2 < 10.0.26200.9711
microsoft windows_11_25h2 < 10.0.26200.9711
microsoft windows_11_26h1 < 10.0.28000.3231
microsoft windows_11_26h1 < 10.0.28000.3231

References & Advisories (1)

Bug Bounty Relevance

24 / 100
✓ No user interaction

CVSS Score

4.7 / 10.0 v3.1
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:N/E:U/RL:O/RC:C

EPSS — Exploitation Probability

0.27%
Raw Score 0.002710
Percentile 19.3%
Date 2026-10-29

EPSS Trend

2026-10-29
0.00271
2026-10-28
0.00278

Intelligence Sources

mitre ref →
nvd ref →