Dashboard / CVE-2026-83798

CVE-2026-83798

MEDIUM
MEDIUM Priority: 0.01 BB Relevance: 36/100
Published: 2026-10-13 Modified: 2026-10-29 First seen: 2026-10-29 Status: active

Attack Surface

Low Complexity No Interaction Integ. Impact

CVSS Vector Breakdown

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

Description

Improper verification of cryptographic signature in Windows Update Stack allows an authorized attacker to perform spoofing locally.

Weakness Classification (2)

Affected Software (27)

VendorProductVersion
Microsoft Windows 10 Version 1607 10.0.14393.0 < 10.0.14393.9612
microsoft windows_10_1607 < 10.0.14393.9612
microsoft windows_10_1607 < 10.0.14393.9612
microsoft windows_10_1809 < 10.0.17763.9376
microsoft windows_10_1809 < 10.0.17763.9376
microsoft windows_10_21h2 < 10.0.19044.7807
microsoft windows_10_21h2 < 10.0.19044.7807
microsoft windows_10_21h2 < 10.0.19044.7807
microsoft windows_10_22h2 < 10.0.19045.7807
microsoft windows_10_22h2 < 10.0.19045.7807
microsoft windows_10_22h2 < 10.0.19045.7807
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
microsoft windows_11_26h2 < 10.0.26300.9711
microsoft windows_11_26h2 < 10.0.26300.9711
microsoft windows_server_2012 -
microsoft windows_server_2012 r2
microsoft windows_server_2016 < 10.0.14393.9612
microsoft windows_server_2019 < 10.0.17763.9376
microsoft windows_server_2022 < 10.0.20348.5761
microsoft windows_server_2025 < 10.0.26100.33650

References & Advisories (1)

Bug Bounty Relevance

36 / 100
✓ Low complexity
✓ No user interaction

CVSS Score

5.5 / 10.0 v3.1
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N/E:U/RL:O/RC:C

EPSS — Exploitation Probability

0.24%
Raw Score 0.002390
Percentile 15.0%
Date 2026-10-29

EPSS Trend

2026-10-29
0.00239
2026-10-28
0.00239

Intelligence Sources

mitre ref →
nvd ref →

External Links