CVE-2026-83862CWE-416

CVE-2026-83862

High · published October 13, 2026

CVSS v3.1
8.8
EPSS
1%
Percentile
49.7
In the wild
Unconfirmed
What it is

Use after free in Windows Network Load Balancing allows an unauthorized attacker to execute code over an adjacent network.

The record
Technical detail
CVSS v3.1
8.8 · HIGH
Vector
CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CVSS v4.0
Not supplied
EPSS
0.00634 · 49.7th percentile
Weakness
CWE-416 · Use After Free
Published
2026-10-13T23:20Z
Affected products (10)
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_2012all versions—
microsoft/windows_server_2012all versions—
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-2026-83862 · [email protected]
EPSS history
Timeline
  • 15 OCT 03:34Z
    EPSS moved — → 1%
    epss
  • 13 OCT 18:59Z
    Windows Network Load Balancing Remote Code Execution Vulnerability
    cvelistv5
  • 13 OCT 18:59Z
    Windows Network Load Balancing Remote Code Execution Vulnerability
    cvelistv5