CVE-2026-62820

Published Aug 11, 2026

Last updated 2 months ago

CVSS high 8.1
Dns
Port (53)

Overview

Description
Concurrent execution using shared resource with improper synchronization ('race condition') in Windows DNS allows an unauthorized attacker to execute code over a network.
Source
secure@microsoft.com
NVD status
Analyzed
Products
windows_10_1607, windows_10_1809, windows_server_2016, windows_server_2019, windows_server_2022, windows_server_2025

Risk scores

CVSS 3.1

Type
Secondary
Base score
8.1
Impact score
5.9
Exploitability score
2.2
Vector string
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
Severity
HIGH

Weaknesses

secure@microsoft.com
CWE-362

Social media

Hype score
Not currently trending

Configurations

References

Sources include official advisories and independent security research.