Exploitation evidence
Known exploited · CISA KEV listed
Added 2021-11-03. Ransomware campaign use: Unknown.
CISA required action: Apply updates per vendor instructions.
CISA due date: 2022-05-03. This is the catalog’s deadline, not an assessment of your organization’s exposure.
KEV checked 13 Nov 2026, 00:20 Jerusalem · Original catalog ↗Reported products and versions
Microsoft / Windows Server
Default status: Not specified
- affected: 2019
- affected: 2019 (Core installation)
- affected: 2016
- affected: 2016 (Core installation)
- affected: 2008 for 32-bit Systems Service Pack 2
- affected: 2008 for 32-bit Systems Service Pack 2 (Core installation)
- affected: 2008 for x64-based Systems Service Pack 2
- affected: 2008 for x64-based Systems Service Pack 2 (Core installation)
- affected: 2008 R2 for x64-based Systems Service Pack 1
- affected: 2008 R2 for x64-based Systems Service Pack 1 (Core installation)
- affected: 2012
- affected: 2012 (Core installation)
- affected: 2012 R2
- affected: 2012 R2 (Core installation)
Microsoft / Windows Server, version 1909 (Server Core installation)
Default status: Not specified
- affected: unspecified
Microsoft / Windows Server, version 1903 (Server Core installation)
Default status: Not specified
- affected: unspecified
Microsoft / Windows Server, version 2004 (Server Core installation)
Default status: Not specified
- affected: unspecified
Fixes and workarounds
No explicit solution text in the downloaded CVE record. Consult the vendor advisory; unaffected version ranges are shown above as reported, not inferred as a patch recommendation.
Sources and related reporting
Observed change timeline
History begins when Egret first downloads each source. It is not the complete upstream CVE history.
12 Nov 2026, 18:20 Jerusalem · EPSS observation updated
Stored EPSS snapshot at this observation.
{
"date": "2026-11-12",
"epss": 0.96721,
"percentile": 0.99886
}10 Nov 2026, 18:20 Jerusalem · EPSS observation updated
Stored EPSS snapshot at this observation.
{
"date": "2026-11-10",
"epss": 0.96721,
"percentile": 0.99885
}09 Nov 2026, 18:20 Jerusalem · EPSS observation updated
Stored EPSS snapshot at this observation.
{
"date": "2026-11-09",
"epss": 0.96721,
"percentile": 0.99885
}08 Nov 2026, 18:20 Jerusalem · EPSS observation updated
Stored EPSS snapshot at this observation.
{
"date": "2026-11-08",
"epss": 0.96721,
"percentile": 0.99885
}07 Nov 2026, 18:20 Jerusalem · EPSS observation updated
Stored EPSS snapshot at this observation.
{
"date": "2026-11-07",
"epss": 0.96721,
"percentile": 0.99885
}06 Nov 2026, 18:20 Jerusalem · EPSS observation updated
Stored EPSS snapshot at this observation.
{
"date": "2026-11-06",
"epss": 0.96721,
"percentile": 0.99885
}06 Nov 2026, 06:20 Jerusalem · CVE Program record changed
Stored CNA snapshot at this observation.
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}05 Nov 2026, 18:20 Jerusalem · EPSS observation updated
Stored EPSS snapshot at this observation.
{
"date": "2026-11-05",
"epss": 0.96721,
"percentile": 0.99885
}04 Nov 2026, 18:20 Jerusalem · EPSS observation updated
Stored EPSS snapshot at this observation.
{
"date": "2026-11-04",
"epss": 0.96721,
"percentile": 0.99885
}03 Nov 2026, 18:20 Jerusalem · EPSS observation updated
Stored EPSS snapshot at this observation.
{
"date": "2026-11-03",
"epss": 0.96721,
"percentile": 0.99885
}03 Nov 2026, 02:22 Jerusalem · EPSS observation updated
Stored EPSS snapshot at this observation.
{
"date": "2026-11-02",
"epss": 0.96721,
"percentile": 0.99885
}03 Nov 2026, 02:22 Jerusalem · CISA KEV status changed
Stored KEV snapshot at this observation.
{
"cveID": "CVE-2020-1350",
"cwes": [],
"dateAdded": "2021-11-03",
"dueDate": "2022-05-03",
"forensicTriage": "No",
"knownRansomwareCampaignUse": "Unknown",
"notes": "Reference CISA's ED 20-03 (https://www.cisa.gov/news-events/directives/ed-20-03-mitigate-windows-dns-server-remote-code-execution-vulnerability-july-2020-patch-tuesday) for further guidance and requirements. Note: The due date for addressing this vulnerability aligns with the requirements outlined in ED 20-03. https://nvd.nist.gov/vuln/detail/CVE-2020-1350",
"product": "Windows",
"requiredAction": "Apply updates per vendor instructions.",
"shortDescription": "Microsoft Windows DNS Servers fail to properly handle requests, allowing an attacker to perform remote code execution in the context of the Local System Account. The vulnerability is also known under the moniker of SIGRed.",
"vendorProject": "Microsoft",
"vulnerabilityName": "Microsoft Windows DNS Server Remote Code Execution Vulnerability"
}