CVE-2026-62878CWE-121

CVE-2026-62878

Critical · published August 11, 2026

CVSS v3.1
9.8
EPSS
1%
Percentile
61.7
In the wild
Unconfirmed
What it is

Stack-based buffer overflow in Windows DNS allows an unauthorized attacker to execute code over a network.

The record
Technical detail
CVSS v3.1
9.8 · CRITICAL
Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CVSS v4.0
Not supplied
EPSS
0.00974 · 61.7th percentile
Weakness
CWE-121 · Stack-based Buffer Overflow
Published
2026-08-11T21:18Z
Affected products (10)
ProductVersionsFixed in
microsoft/windows_10_1607< 10.0.14393.941810.0.14393.9418
microsoft/windows_10_1607< 10.0.14393.941810.0.14393.9418
microsoft/windows_10_1809< 10.0.17763.912110.0.17763.9121
microsoft/windows_10_1809< 10.0.17763.912110.0.17763.9121
microsoft/windows_server_2012all versions—
microsoft/windows_server_2012all versions—
microsoft/windows_server_2016< 10.0.14393.941810.0.14393.9418
microsoft/windows_server_2019< 10.0.17763.912110.0.17763.9121
microsoft/windows_server_2022< 10.0.20348.544010.0.20348.5440
microsoft/windows_server_2025< 10.0.26100.3322210.0.26100.33222
References (1)
https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-62878 · [email protected]
EPSS history
Timeline
  • 11 AUG 17:04Z
    Windows DNS Server Remote Code Execution Vulnerability
    cvelistv5