CVE-2026-50343
High7.8Improper privilege management in Microsoft Install Service allows an authorized attacker to elevate privileges locally.
- CVSS
- 7.8v3.1
- EPSS (exploit probability)
- 0.3%21th pct
- CISA KEV
- Not listed
EPSS trendFIRST daily scores, last 90 days
Daily values
| Score date | EPSS | Percentile |
|---|---|---|
| 2026-10-20 | 0.3% | 21.2% |
| 2026-10-19 | 0.3% | 21.1% |
| 2026-10-18 | 0.3% | 21.0% |
| 2026-10-16 | 0.3% | 21.0% |
| 2026-10-15 | 0.3% | 21.0% |
| 2026-10-14 | 0.3% | 20.9% |
| 2026-10-13 | 0.3% | 20.8% |
| 2026-10-12 | 0.3% | 20.7% |
| 2026-10-11 | 0.3% | 20.7% |
| 2026-10-10 | 0.3% | 20.7% |
| 2026-10-09 | 0.3% | 20.6% |
| 2026-10-08 | 0.3% | 20.6% |
| 2026-10-07 | 0.3% | 20.6% |
| 2026-10-06 | 0.3% | 20.5% |
| 2026-10-05 | 0.3% | 20.4% |
| 2026-10-04 | 0.3% | 20.4% |
| 2026-10-03 | 0.3% | 20.4% |
| 2026-10-02 | 0.3% | 20.4% |
| 2026-10-01 | 0.3% | 20.3% |
| 2026-09-30 | 0.3% | 20.3% |
| 2026-09-29 | 0.3% | 20.2% |
| 2026-09-27 | 0.3% | 20.2% |
| 2026-09-26 | 0.3% | 20.2% |
| 2026-09-25 | 0.3% | 20.0% |
| 2026-09-24 | 0.3% | 20.0% |
| 2026-09-23 | 0.3% | 22.7% |
| 2026-09-22 | 0.3% | 22.7% |
| 2026-09-21 | 0.3% | 22.6% |
| 2026-09-20 | 0.3% | 22.7% |
| 2026-09-19 | 0.3% | 22.7% |
| 2026-09-18 | 0.3% | 22.7% |
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Affected products
- microsoft windows 10 1809
- microsoft windows 10 21h2
- microsoft windows 10 22h2
- microsoft windows 11 24h2
- microsoft windows 11 25h2
- microsoft windows 11 26h1
- microsoft windows server 2019
- microsoft windows server 2022
- microsoft windows server 2025