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Known exploited vulnerability

CVE-2020-1350

criticalCVSS 3.1 10.0In CISA KEVEPSS 97%Published · Microsoft

The short answer

CVE-2020-1350 affects Microsoft Windows Server and is rated critical (CVSS 10.0). CISA added it to the Known Exploited Vulnerabilities catalog on 2021-11-03: attackers are using it, so patch it first. The vendor has linked a patch.

What it is

A remote code execution vulnerability exists in Windows Domain Name System servers when they fail to properly handle requests, aka 'Windows DNS Server Remote Code Execution Vulnerability'.

Weakness: CWE-20.

Severity

10.0 critical

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H

Exploited (CISA KEV)

Yes, since Nov 3, 2021

Federal due date May 3, 2022

EPSS, next 30 days

97%

Higher than 100% of scored CVEs

How it can be exploited

Attack vector
Network
Attack complexity
Low
Privileges required
None
User interaction
None
Scope
Changed
Confidentiality impact
High
Integrity impact
High
Availability impact
High

What CISA says to do

Apply updates per vendor instructions.

Affected products

Windows Server, Windows Server, version 1909 (Server Core installation), Windows Server, version 1903 (Server Core installation), Windows Server, version 2004 (Server Core installation). NVD's record lists the exact affected versions.

References

Questions

Is CVE-2020-1350 being exploited?

Yes. CISA added CVE-2020-1350 to its Known Exploited Vulnerabilities catalog on 2021-11-03, with a federal remediation due date of 2022-05-03.

How do I fix CVE-2020-1350?

CISA's required action: Apply updates per vendor instructions.

From NVD, CISA KEV, FIRST EPSS and OSV.dev, checked . Status on NVD: Analyzed. The description is NVD's text, quoted as published.

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