CVE-2026-88149CWE-415

CVE-2026-88149

High · published October 13, 2026

CVSS v3.1
7.0
EPSS
0%
Percentile
9.8
In the wild
Unconfirmed
What it is

Double free in Windows Ancillary Function Driver for WinSock 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
0.00204 · 9.8th percentile
Weakness
CWE-415 · Double Free
Published
2026-10-13T23:21Z
References (1)
https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-88149 · [email protected]
EPSS history
Timeline
  • 15 OCT 03:35Z
    EPSS moved — → 0%
    epss
  • 13 OCT 19:01Z
    Windows Ancillary Function Driver for WinSock Elevation of Privilege Vulnerability
    cvelistv5
  • 13 OCT 19:01Z
    Windows Ancillary Function Driver for WinSock Elevation of Privilege Vulnerability
    cvelistv5