Dashboard / CVE-2026-58638

CVE-2026-58638

MEDIUM
MEDIUM Priority: 0.01 BB Relevance: 32/100
Published: 2026-07-14 Modified: 2026-10-28 First seen: 2026-10-29 Status: active

Attack Surface

Low Complexity No Interaction Conf. Impact Integ. Impact

CVSS Vector Breakdown

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

Description

Missing cryptographic step in Windows Boot Loader allows an authorized attacker to bypass a security feature locally.

Weakness Classification (1)

Affected Software (23)

VendorProductVersion
Microsoft Windows 10 Version 1809 10.0.17763.0 < 10.0.17763.9020
microsoft windows_10_1809 < 10.0.17763.9020
microsoft windows_10_1809 < 10.0.17763.9020
microsoft windows_10_21h2 < 10.0.19044.7548
microsoft windows_10_21h2 < 10.0.19044.7548
microsoft windows_10_21h2 < 10.0.19044.7548
microsoft windows_10_22h2 < 10.0.19045.7548
microsoft windows_10_22h2 < 10.0.19045.7548
microsoft windows_10_22h2 < 10.0.19045.7548
microsoft windows_11_23h2 < 10.0.22631.7376
microsoft windows_11_23h2 < 10.0.22631.7376
microsoft windows_11_24h2 < 10.0.26100.8875
microsoft windows_11_24h2 < 10.0.26100.8875
microsoft windows_11_25h2 < 10.0.26200.8875
microsoft windows_11_25h2 < 10.0.26200.8875
microsoft windows_11_26h1 < 10.0.28000.2269
microsoft windows_11_26h1 < 10.0.28000.2269
microsoft windows_server_2012 -
microsoft windows_server_2012 r2
microsoft windows_server_2016 < 10.0.14393.9339
microsoft windows_server_2019 < 10.0.17763.9020
microsoft windows_server_2022 < 10.0.20348.5386
microsoft windows_server_2025 < 10.0.26100.33158

References & Advisories (1)

Bug Bounty Relevance

32 / 100
✓ Low complexity
✓ No user interaction

CVSS Score

6.0 / 10.0 v3.1
CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:N/E:U/RL:O/RC:C

EPSS — Exploitation Probability

0.24%
Raw Score 0.002350
Percentile 14.4%
Date 2026-10-29

EPSS Trend

2026-10-29
0.00235
2026-10-28
0.00235

Intelligence Sources

mitre ref →

External Links