CVE-2026-20838 — Information Exposure via Error Message in Microsoft Windows 11 Version 22h3

CWE-209 — Information Exposure via Error Message5 documents5 sources
Severity
5.5MEDIUMNVD
EPSS
0.1%
top 82.82%
CISA KEV
Not in KEV
Exploit
No known exploits
Affected products
10
Microsoft Windows 11 Version 22h3Microsoft Windows 11 Version 23h2Microsoft Windows 11 Version 24h2+7 more
Timeline
PublishedJan 13

Description

Generation of error message containing sensitive information in Windows Kernel allows an authorized attacker to disclose information locally.

CVSS vector

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:NExploitability: 1.8 | Impact: 3.6

Affected Packages10 packages

▶NVDmicrosoft/windows< 10.0.20348.4648+2
▶NVDmicrosoft/windows_11_23h2< 10.0.22631.6491
▶NVDmicrosoft/windows_11_24h2< 10.0.26100.7623
▶NVDmicrosoft/windows_11_25h2< 10.0.26200.7623
▶CVEListV5microsoft/windows_server_202210.0.20348.0 — 10.0.20348.4648

🔴Vulnerability Details

2
CVEList
Windows Kernel Information Disclosure Vulnerability↗2026-01-13
▶
GHSA
GHSA-6j3g-2jh3-q8rg: Generation of error message containing sensitive information in Windows Kernel allows an authorized attacker to disclose information locally↗2026-01-13
▶

📋Vendor Advisories

1
Microsoft
Windows Kernel Information Disclosure Vulnerability↗2026-01-13
▶

🕵️Threat Intelligence

1
Wiz
CVE-2026-20838 Impact, Exploitability, and Mitigation Steps | Wiz↗
▶
CVE-2026-20838 — Information Exposure via Error Message | cvebase