CVE-2026-96248CWE-121

CVE-2026-96248

High · published October 13, 2026

CVSS v3.1
7.5
EPSS
1%
Percentile
66.0
In the wild
Unconfirmed
What it is

Stack-based buffer overflow in Windows Host Guardian Service allows an unauthorized attacker to deny service over a network.

The record
Technical detail
CVSS v3.1
7.5 · HIGH
Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
CVSS v4.0
Not supplied
EPSS
0.01125 · 66.0th percentile
Weakness
CWE-121 · Stack-based Buffer Overflow
Published
2026-10-13T23:21Z
Affected products (8)
ProductVersionsFixed in
microsoft/windows_10_1607< 10.0.14393.961210.0.14393.9612
microsoft/windows_10_1607< 10.0.14393.961210.0.14393.9612
microsoft/windows_10_1809< 10.0.17763.937610.0.17763.9376
microsoft/windows_10_1809< 10.0.17763.937610.0.17763.9376
microsoft/windows_server_2016< 10.0.14393.961210.0.14393.9612
microsoft/windows_server_2019< 10.0.17763.937610.0.17763.9376
microsoft/windows_server_2022< 10.0.20348.576110.0.20348.5761
microsoft/windows_server_2025< 10.0.26100.3365010.0.26100.33650
References (1)
https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-96248 · [email protected]
EPSS history
Timeline
  • 15 OCT 03:35Z
    EPSS moved — → 1%
    epss
  • 13 OCT 19:00Z
    Windows Host Guardian Service Denial of Service Vulnerability
    cvelistv5
  • 13 OCT 19:00Z
    Windows Host Guardian Service Denial of Service Vulnerability
    cvelistv5