CVE-2026-27910CWE-280

CVE-2026-27910

High · published April 14, 2026

CVSS v3.1
7.8
EPSS
0%
Percentile
21.3
In the wild
Unconfirmed
What it is

Improper handling of insufficient permissions or privileges in Windows Installer allows an authorized attacker to elevate privileges locally.

The record
Technical detail
CVSS v3.1
7.8 · HIGH
Vector
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
CVSS v4.0
Not supplied
EPSS
0.00298 · 21.3th percentile
Weakness
CWE-280 · Improper Handling of Insufficient Permissions or Privileges
Published
2026-04-14T22:16Z
Affected products (25)
ProductVersionsFixed in
microsoft/windows_10_1607< 10.0.14393.906010.0.14393.9060
microsoft/windows_10_1607< 10.0.14393.906010.0.14393.9060
microsoft/windows_10_1809< 10.0.17763.864410.0.17763.8644
microsoft/windows_10_1809< 10.0.17763.864410.0.17763.8644
microsoft/windows_10_21h2< 10.0.19044.718410.0.19044.7184
microsoft/windows_10_21h2< 10.0.19044.718410.0.19044.7184
microsoft/windows_10_21h2< 10.0.19044.718410.0.19044.7184
microsoft/windows_10_22h2< 10.0.19045.718410.0.19045.7184
microsoft/windows_10_22h2< 10.0.19045.718410.0.19045.7184
microsoft/windows_10_22h2< 10.0.19045.718410.0.19045.7184
microsoft/windows_11_23h2< 10.0.22631.693610.0.22631.6936
microsoft/windows_11_23h2< 10.0.22631.693610.0.22631.6936
microsoft/windows_11_24h2< 10.0.26100.824610.0.26100.8246
microsoft/windows_11_24h2< 10.0.26100.824610.0.26100.8246
microsoft/windows_11_25h2< 10.0.26200.824610.0.26200.8246
microsoft/windows_11_25h2< 10.0.26200.824610.0.26200.8246
microsoft/windows_11_26h1< 10.0.28000.183610.0.28000.1836
microsoft/windows_11_26h1< 10.0.28000.183610.0.28000.1836
microsoft/windows_server_2012all versions—
microsoft/windows_server_2012all versions—
microsoft/windows_server_2016< 10.0.14393.906010.0.14393.9060
microsoft/windows_server_2019< 10.0.17763.864410.0.17763.8644
microsoft/windows_server_2022< 10.0.20348.502010.0.20348.5020
microsoft/windows_server_2022_23h2< 10.0.25398.227410.0.25398.2274
microsoft/windows_server_2025< 10.0.26100.3269010.0.26100.32690
References (1)
https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-27910 · [email protected]
EPSS history
Timeline
  • 14 APR 16:58Z
    Windows Installer Elevation of Privilege Vulnerability
    cvelistv5