CVE-2026-69918CWE-122

CVE-2026-69918

High · published October 13, 2026

CVSS v3.1
8.8
EPSS
0%
Percentile
27.1
In the wild
Unconfirmed
What it is

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

The record
Technical detail
CVSS v3.1
8.8 · HIGH
Vector
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
CVSS v4.0
Not supplied
EPSS
0.00349 · 27.1th percentile
Weakness
CWE-122 · Heap-based Buffer Overflow
Published
2026-10-13T23:19Z
Affected products (24)
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_10_21h2< 10.0.19044.780710.0.19044.7807
microsoft/windows_10_21h2< 10.0.19044.780710.0.19044.7807
microsoft/windows_10_21h2< 10.0.19044.780710.0.19044.7807
microsoft/windows_10_22h2< 10.0.19045.780710.0.19045.7807
microsoft/windows_10_22h2< 10.0.19045.780710.0.19045.7807
microsoft/windows_10_22h2< 10.0.19045.780710.0.19045.7807
microsoft/windows_11_23h2< 10.0.22631.765210.0.22631.7652
microsoft/windows_11_23h2< 10.0.22631.765210.0.22631.7652
microsoft/windows_11_24h2< 10.0.26100.971110.0.26100.9711
microsoft/windows_11_24h2< 10.0.26100.971110.0.26100.9711
microsoft/windows_11_25h2< 10.0.26200.971110.0.26200.9711
microsoft/windows_11_25h2< 10.0.26200.971110.0.26200.9711
microsoft/windows_11_26h1< 10.0.28000.323110.0.28000.3231
microsoft/windows_11_26h1< 10.0.28000.323110.0.28000.3231
microsoft/windows_11_26h2< 10.0.26300.971110.0.26300.9711
microsoft/windows_11_26h2< 10.0.26300.971110.0.26300.9711
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-2026-69918 · [email protected]
EPSS history
Timeline
  • 15 OCT 03:33Z
    EPSS moved — → 0%
    epss
  • 13 OCT 18:59Z
    Windows Core Messaging Elevation of Privilege Vulnerability
    cvelistv5
  • 13 OCT 18:59Z
    Windows Core Messaging Elevation of Privilege Vulnerability
    cvelistv5