CVE-2026-85879CWE-367

CVE-2026-85879

High · published October 13, 2026

CVSS v3.1
7.0
EPSS
0%
Percentile
8.5
In the wild
Unconfirmed
What it is

Time-of-check time-of-use (toctou) race condition in Windows Subsystem for Linux 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
2026-10-13T23:21Z
References (1)
https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-85879 · [email protected]
EPSS history
Timeline
  • 15 OCT 03:34Z
    EPSS moved — → 0%
    epss
  • 13 OCT 19:01Z
    Windows Subsystem for Linux Elevation of Privilege Vulnerability
    cvelistv5
  • 13 OCT 19:01Z
    Windows Subsystem for Linux Elevation of Privilege Vulnerability
    cvelistv5