Security Advisory catalog CVE-2026-62820 Historical advisory recorded 10 Nov 2026 23:21:22 UTC. Read the latest advisory .
cve-program · CVE-2026-62820 Published
Concurrent execution using shared resource with improper synchronization ('race condition') in Windows DNS allows an unauthorized attacker to execute code over a network.
Read the publisher's advisory Affected versions, risk and source history
cve-program · CVE-2026-62820 Published Windows Server 2016 Vendor product
Publisher's version information Shown as published. These rules are not interpreted as NuGet package version ranges.
{
"vendor": "Microsoft",
"product": "Windows Server 2016",
"platforms": [
"x64-based Systems"
],
"versions": [
{
"version": "10.0.14393.0",
"lessThan": "10.0.14393.9418",
"versionType": "custom",
"status": "affected"
}
]
} Windows Server 2016 (Server Core installation) Vendor product
Publisher's version information Shown as published. These rules are not interpreted as NuGet package version ranges.
{
"vendor": "Microsoft",
"product": "Windows Server 2016 (Server Core installation)",
"platforms": [
"x64-based Systems"
],
"versions": [
{
"version": "10.0.14393.0",
"lessThan": "10.0.14393.9418",
"versionType": "custom",
"status": "affected"
}
]
} Windows Server 2019 Vendor product
Publisher's version information Shown as published. These rules are not interpreted as NuGet package version ranges.
{
"vendor": "Microsoft",
"product": "Windows Server 2019",
"platforms": [
"x64-based Systems"
],
"versions": [
{
"version": "10.0.17763.0",
"lessThan": "10.0.17763.9121",
"versionType": "custom",
"status": "affected"
}
]
} Windows Server 2019 (Server Core installation) Vendor product
Publisher's version information Shown as published. These rules are not interpreted as NuGet package version ranges.
{
"vendor": "Microsoft",
"product": "Windows Server 2019 (Server Core installation)",
"platforms": [
"x64-based Systems"
],
"versions": [
{
"version": "10.0.17763.0",
"lessThan": "10.0.17763.9121",
"versionType": "custom",
"status": "affected"
}
]
} Windows Server 2022 Vendor product
Publisher's version information Shown as published. These rules are not interpreted as NuGet package version ranges.
{
"vendor": "Microsoft",
"product": "Windows Server 2022",
"platforms": [
"x64-based Systems"
],
"versions": [
{
"version": "10.0.20348.0",
"lessThan": "10.0.20348.5499",
"versionType": "custom",
"status": "affected"
}
]
} Windows Server 2025 Vendor product
Publisher's version information Shown as published. These rules are not interpreted as NuGet package version ranges.
{
"vendor": "Microsoft",
"product": "Windows Server 2025",
"platforms": [
"x64-based Systems"
],
"versions": [
{
"version": "10.0.26100.0",
"lessThan": "10.0.26100.33296",
"versionType": "custom",
"status": "affected"
}
]
} Windows Server 2025 (Server Core installation) Vendor product
Publisher's version information Shown as published. These rules are not interpreted as NuGet package version ranges.
{
"vendor": "Microsoft",
"product": "Windows Server 2025 (Server Core installation)",
"platforms": [
"x64-based Systems"
],
"versions": [
{
"version": "10.0.26100.0",
"lessThan": "10.0.26100.33296",
"versionType": "custom",
"status": "affected"
}
]
} Original source record · Cite this exact observation · Complete original publisher JSON