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Known exploited vulnerability

CVE-2020-17144

highCVSS 3.1 8.4In CISA KEVEPSS 37%Published · Microsoft

The short answer

CVE-2020-17144 affects Microsoft Microsoft Exchange Server 2010 Service Pack 3 Update Rollup 31 and is rated high (CVSS 8.4). 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

Microsoft Exchange Remote Code Execution Vulnerability

Weakness: CWE-502.

Severity

8.4 high

CVSS:3.1/AV:N/AC:L/PR:H/UI:R/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

37%

Higher than 99% of scored CVEs

How it can be exploited

Attack vector
Network
Attack complexity
Low
Privileges required
High
User interaction
Required
Scope
Changed
Confidentiality impact
High
Integrity impact
High
Availability impact
High

What CISA says to do

Apply updates per vendor instructions.

Affected products

Microsoft Exchange Server 2010 Service Pack 3 Update Rollup 31. NVD's record lists the exact affected versions.

References

Questions

Is CVE-2020-17144 being exploited?

Yes. CISA added CVE-2020-17144 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-2020-17144?

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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