CVE-2026-97803CWE-122

CVE-2026-97803

High · published October 13, 2026

CVSS v3.1
7.8
EPSS
0%
Percentile
22.7
In the wild
Unconfirmed
What it is

Heap-based buffer overflow in Windows Kernel allows an authorized attacker to elevate privileges locally.

The record
Technical detail
CVSS v3.1
7.8 · HIGH
Vector
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
CVSS v4.0
Not supplied
EPSS
0.00311 · 22.7th percentile
Weakness
CWE-122 · Heap-based Buffer Overflow
Published
2026-10-13T23:22Z
Affected products (2)
ProductVersionsFixed in
microsoft/windows_11_26h1< 10.0.28000.323110.0.28000.3231
microsoft/windows_11_26h1< 10.0.28000.323110.0.28000.3231
References (1)
https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-97803 · [email protected]
EPSS history
Timeline
  • 15 OCT 03:35Z
    EPSS moved — → 0%
    epss
  • 13 OCT 19:01Z
    Windows Kernel Elevation of Privilege Vulnerability
    cvelistv5
  • 13 OCT 19:01Z
    Windows Kernel Elevation of Privilege Vulnerability
    cvelistv5