CVE-2026-20817
CVSS v3
7.8
HIGH
EPSS Score
5.5 %
exploit probability, as of 2026-09-25
CISA KEV
No
known exploited
Exploitation
—
SSVC status
Description
Improper handling of insufficient permissions or privileges in Windows Error Reporting allows an authorized attacker to elevate privileges locally.
Technical details
- Published
- 2026-01-13
- Last Modified
- 2026-01-14
Frequently asked questions
What is CVE-2026-20817?
Improper handling of insufficient permissions or privileges in Windows Error Reporting allows an authorized attacker to elevate privileges locally.
Is CVE-2026-20817 actively exploited?
Active exploitation of CVE-2026-20817 has not been confirmed. Its EPSS score was 5.5% on 2026-09-25, the estimated probability of exploitation in the next 30 days.
What is the CVSS score for CVE-2026-20817?
CVE-2026-20817 has a CVSS v3 base score of 7.8 (HIGH severity).
Is CVE-2026-20817 affecting your environment?
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