CVE-2026-20817
Medium
Elevated severity or exploit probability.
CVSS base
7.8
HIGH
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
EPSS — probability of exploitation (30 days)
5.5%
92.5th percentile
CISA KEV
Not listed
Weakness / dates
CWE-280
Published 2026-01-13 · modified 2026-07-30
Description
Improper handling of insufficient permissions or privileges in Windows Error Reporting allows an authorized attacker to elevate privileges locally.
Affected
References
- https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-20817
- https://www.vicarius.io/vsociety/posts/cve-2026-20817-detection-script-eop-vulnerabilit-in-windows-error-reporting
- https://www.vicarius.io/vsociety/posts/cve-2026-20817-mitigation-script-eop-vulnerability-in-windows-error-reporting