CVE-2026-70580CWE-306

CVE-2026-70580

High · published October 13, 2026

CVSS v3.1
8.8
EPSS
0%
Percentile
21.9
In the wild
Unconfirmed
What it is

Missing authentication for critical function in Windows Credential Guard allows an authorized attacker to perform spoofing locally.

The record
Technical detail
CVSS v3.1
8.8 · HIGH
Vector
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
CVSS v4.0
Not supplied
EPSS
0.00304 · 21.9th percentile
Weakness
CWE-306 · Missing Authentication for Critical Function
Published
2026-10-13T23:19Z
References (1)
https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-70580 · [email protected]
EPSS history
Timeline
  • 15 OCT 03:33Z
    EPSS moved — → 0%
    epss
  • 13 OCT 18:59Z
    Windows Credential Guard Spoofing Vulnerability
    cvelistv5
  • 13 OCT 18:59Z
    Windows Credential Guard Spoofing Vulnerability
    cvelistv5