CVE-2026-72939CWE-476

CVE-2026-72939

Medium · published September 8, 2026

CVSS v3.1
6.5
EPSS
1%
Percentile
66.3
In the wild
Unconfirmed
What it is

Null pointer dereference in Windows Routing and Remote Access Service (RRAS) allows an authorized attacker to deny service over a network.

The record
Technical detail
CVSS v3.1
6.5 · MEDIUM
Vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
CVSS v4.0
Not supplied
EPSS
0.01138 · 66.3th percentile
Weakness
CWE-476 · NULL Pointer Dereference
Published
2026-09-08T22:20Z
Affected products (24)
ProductVersionsFixed in
microsoft/windows_10_1607< 10.0.14393.951210.0.14393.9512
microsoft/windows_10_1607< 10.0.14393.951210.0.14393.9512
microsoft/windows_10_1809< 10.0.17763.924510.0.17763.9245
microsoft/windows_10_1809< 10.0.17763.924510.0.17763.9245
microsoft/windows_10_21h2< 10.0.19044.772510.0.19044.7725
microsoft/windows_10_21h2< 10.0.19044.772510.0.19044.7725
microsoft/windows_10_21h2< 10.0.19044.772510.0.19044.7725
microsoft/windows_10_22h2< 10.0.19045.772510.0.19045.7725
microsoft/windows_10_22h2< 10.0.19045.772510.0.19045.7725
microsoft/windows_10_22h2< 10.0.19045.772510.0.19045.7725
microsoft/windows_11_23h2< 10.0.22631.758210.0.22631.7582
microsoft/windows_11_23h2< 10.0.22631.758210.0.22631.7582
microsoft/windows_11_24h2< 10.0.26100.944510.0.26100.9445
microsoft/windows_11_24h2< 10.0.26100.944510.0.26100.9445
microsoft/windows_11_25h2< 10.0.26200.944510.0.26200.9445
microsoft/windows_11_25h2< 10.0.26200.944510.0.26200.9445
microsoft/windows_11_26h1< 10.0.28000.295410.0.28000.2954
microsoft/windows_11_26h1< 10.0.28000.295410.0.28000.2954
microsoft/windows_server_2012all versions—
microsoft/windows_server_2012all versions—
microsoft/windows_server_2016< 10.0.14393.951210.0.14393.9512
microsoft/windows_server_2019< 10.0.17763.924510.0.17763.9245
microsoft/windows_server_2022< 10.0.20348.562210.0.20348.5622
microsoft/windows_server_2025< 10.0.26100.3343810.0.26100.33438
References (1)
https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-72939 · [email protected]
EPSS history
Timeline
  • 10 SEP 03:18Z
    EPSS moved — → 1%
    epss
  • 08 SEP 17:12Z
    Windows Routing and Remote Access Service (RRAS) Denial of Service Vulnerability
    cvelistv5