Windows DNS Server Remote Code Execution Vulnerability (Microsoft Windows Server 2016)

CVE-2026-62820
HIGH 8.1

At a glance

Source
NVD
EPSS
EPSS 0.54 % · percentile 46 ()
State
PUBLISHED
Published
Updated
Assigner
microsoft
NVD status
Analyzed

Description

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

Weaknesses (CWE)

  • CWE-362 — Concurrent Execution using Shared Resource with Improper Synchronization

References

Scores

VersionScoreVectorScored by
CVSS 3.1HIGH 8.1CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:Cmicrosoft
CVSS 3.1HIGH 8.1CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:HNVD · secure@microsoft.com (Secondary)

European references

CERT-FR advisories

Affected configurations (NVD CPE)

Affected products

ProductVersions
Microsoft · Windows Server 2016affected 10.0.14393.0 < 10.0.14393.9418
Microsoft · Windows Server 2016 (Server Core installation)affected 10.0.14393.0 < 10.0.14393.9418
Microsoft · Windows Server 2019affected 10.0.17763.0 < 10.0.17763.9121
Microsoft · Windows Server 2019 (Server Core installation)affected 10.0.17763.0 < 10.0.17763.9121
Microsoft · Windows Server 2022affected 10.0.20348.0 < 10.0.20348.5499
Microsoft · Windows Server 2025affected 10.0.26100.0 < 10.0.26100.33296
Microsoft · Windows Server 2025 (Server Core installation)affected 10.0.26100.0 < 10.0.26100.33296

Sources

SourceLicence
CVE List (CVEProject cvelistV5)CVE Program Terms of Use
EPSS (FIRST.org)FIRST — attribution requested
ENISA EUVDENISA — reproduction authorised, source acknowledged
CERT-FR (ANSSI)Licence Ouverte / Etalab 2.0
NVD (NIST) via fkie-cad/nvd-json-data-feedsPublic domain — this product uses data from the NVD API but is not endorsed or certified by the NVD