CVE-2026-20817

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

CVSS v3.1

7.8 HIGHCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

EPSS

5.43% chance of exploitation in the next 30 days, 92th percentile

Published

2026-01-13

Updated

2026-07-30

Proof-of-concept exploits (3)

• oxfemale/CVE-2026-20817128★ · 2026-02-19
• dwgth4i/CVE-2026-208170★ · 2026-05-28
• RDTUTORIAL/GhostUSB0★ · 2026-06-23

References

• CVE Record
• NVD entry

Related

• CVE-2020-15999
• CVE-2026-2636
• CVE-2026-2081
• CVE-2026-2082
• CVE-2026-20805
• CVE-2026-20820