CVE-2026-26170

CWE-20 — Improper Input Validation2 documents2 sources
Severity
7.8HIGH
EPSS
No EPSS data
CISA KEV
Not in KEV
Exploit
No known exploits
Affected products
16
Microsoft Windows 10 Version 1607Microsoft Windows 10 Version 1809Microsoft Windows 10 Version 21h2+13 more
Timeline
PublishedApr 14

Description

Improper input validation in Microsoft PowerShell allows an authorized attacker to elevate privileges locally.

CVSS vector

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:HExploitability: 1.8 | Impact: 5.9

Affected Packages16 packages

▶CVEListV5microsoft/windows_server_201610.0.14393.0 — 10.0.14393.9060
▶CVEListV5microsoft/windows_server_201910.0.17763.0 — 10.0.17763.8644
▶CVEListV5microsoft/windows_server_202210.0.20348.0 — 10.0.20348.5020
▶CVEListV5microsoft/windows_server_202510.0.26100.0 — 10.0.26100.32690
▶CVEListV5microsoft/windows_10_version_160710.0.14393.0 — 10.0.14393.9060

🔴Vulnerability Details

1
CVEList
PowerShell Elevation of Privilege Vulnerability↗2026-04-14
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CVE-2026-26170 (HIGH CVSS 7.8) | Improper input validation in Micros | cvebase.io