CVE-2026-50343

Improper privilege management in Microsoft Install Service 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

0.30% chance of exploitation in the next 30 days, 22th percentile

Published

2026-07-14

Updated

2026-08-31

Proof-of-concept exploits (1)

• Rat5ak/CVE-2026-50343-InstallService-EoP47★ · 2026-07-16

References

• CVE Record
• NVD entry

Related

• CVE-2025-55182
• CVE-2025-59382
• CVE-2026-31413
• CVE-2026-31431
• CVE-2026-3805
• CVE-2026-40791