CVE-2026-83839CWE-367
CVE-2026-83839
High · published October 13, 2026
What it is
Time-of-check time-of-use (toctou) race condition in Windows Hyper-V allows an authorized attacker to elevate privileges locally.
The record
Technical detail
- CVSS v3.1
- 7.0 · HIGH
- Vector
- CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
- CVSS v4.0
- Not supplied
- EPSS
- 0.00193 · 8.5th percentile
- Weakness
- CWE-367 · Time-of-check Time-of-use (TOCTOU) Race Condition
- Published
- 2026-10-13T23:20Z
References (1)
EPSS history
Timeline