CVE-2026-62799CWE-122

CVE-2026-62799

High · published August 11, 2026

CVSS v3.1
7.8
EPSS
0%
Percentile
25.4
In the wild
Unconfirmed
What it is

Heap-based buffer overflow in Windows SMB Client 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
0.00333 · 25.4th percentile
Weakness
CWE-122 · Heap-based Buffer Overflow
Published
2026-08-11T21:18Z
Affected products (2)
ProductVersionsFixed in
microsoft/windows_11_26h1< 10.0.28000.270410.0.28000.2704
microsoft/windows_11_26h1< 10.0.28000.270410.0.28000.2704
References (1)
https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-62799 · [email protected]
EPSS history
Timeline
  • 11 AUG 17:06Z
    Windows SMB Client Elevation of Privilege Vulnerability
    cvelistv5