CRITICALCVSS v3.1 10.0Actively exploited · CISA KEV since 2021-11-03Vulnerability

CVE-2020-1350

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.

Properties

Euvd product
Windows Server, Windows Server, version 1909 (Server Core installation), Windows Server, version 2004 (Server Core installation), Windows Server, version 1903 (Server Core installation)
Vulnerability name
Microsoft Windows DNS Server Remote Code Execution Vulnerability
First seen
2025-10-21T23:35:39+00:00
Cvss score
10
Epss score
0.96721
Last seen
2026-10-19T12:00:27+00:00
Due date
2022-05-03
Euvd assigner
microsoft
Retrieved at
2026-10-21T01:24:47+00:00
Exploited euvd since
2021-11-03T00:00:00+00:00
Src batch id
epss_history-20261020T103617Z-728ddd
Source url
https://epss.empiricalsecurity.com/epss_scores-2026-10-19.csv.gz
Date added
2021-11-03
Score
10
Euvd base score version
3.1
Fetched at
2026-10-20T10:36:20+00:00
Euvd vendor
Microsoft
Cvss vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H
In Signal since
initial import (Sep 2026)
Euvd base score
10

Related Entities (9)

AFFECTS_PRODUCT (6)

→[Product]cpe:2.3:o:microsoft:windows_server_2019:-:*:*:*:*:*:*:*
→[Product]cpe:2.3:o:microsoft:windows_server_2016:-:*:*:*:*:*:*:*
→[Product]cpe:2.3:o:microsoft:windows_server_2012:-:*:*:*:*:*:*:*
→[Product]cpe:2.3:o:microsoft:windows_server_2008:r2:sp1:*:*:*:*:x64:*
→[Product]cpe:2.3:o:microsoft:windows_server_2008:-:sp2:*:*:*:*:*:*
→[Product]cpe:2.3:o:microsoft:windows_server_2012:r2:*:*:*:*:*:*:*

DESCRIBES (1)

←[KEVEntry]Microsoft Windows DNS Server Remote Code Execution Vulnerability

HAS_WEAKNESS (1)

→[Weakness]Improper Input Validation

INVOLVES (1)

←[Signal]kev_added · 2021-11-03

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CVE-2020-1350 (CVSS v3.1 10) — Ninja Signal Threat Intelligence | Ninja Signal