CVE-2026-62820

Tuesday, August 11, 2026

8.1

CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C

Summary

Concurrent execution using shared resource with improper synchronization ('race condition') in Windows DNS allows an unauthorized attacker to execute code over a network.

Affected Software

Vendor	Product	Version Range	Status
Microsoft	Windows 10 Version 1607	`10.0.14393.0 < 10.0.14393.9418`	affected
Microsoft	Windows 10 Version 1809	`10.0.17763.0 < 10.0.17763.9115`	affected
Microsoft	Windows Server 2016	`10.0.14393.0 < 10.0.14393.9418`	affected
Microsoft	Windows Server 2016 (Server Core installation)	`10.0.14393.0 < 10.0.14393.9418`	affected
Microsoft	Windows Server 2019	`10.0.17763.0 < 10.0.17763.9115`	affected
Microsoft	Windows Server 2019 (Server Core installation)	`10.0.17763.0 < 10.0.17763.9115`	affected
Microsoft	Windows Server 2022	`10.0.20348.0 < 10.0.20348.5499`	affected
Microsoft	Windows Server 2025	`10.0.26100.0 < 10.0.26100.33296`	affected
Microsoft	Windows Server 2025 (Server Core installation)	`10.0.26100.0 < 10.0.26100.33296`	affected

Weaknesses

CWE-362: CWE-362: Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')

ADP Enrichment

CISA ADP Vulnrichment

SSVC:
Exploitation: none
- Automatable: no
- Technical Impact: total

References

https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-62820

Feedback

Was this page helpful?

Glad to hear it! Please tell us how we can improve.

Sorry to hear that. Please tell us how we can improve.