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Known exploited vulnerability

CVE-2022-41080

highCVSS 3.1 8.8In CISA KEVRansomwareEPSS 77%Published · Microsoft

The short answer

CVE-2022-41080 affects Microsoft Microsoft Exchange Server 2013 Cumulative Update 23 and is rated high (CVSS 8.8). CISA added it to the Known Exploited Vulnerabilities catalog on 2023-01-10: attackers are using it, so patch it first. The vendor has linked a patch.

What it is

Microsoft Exchange Server Elevation of Privilege Vulnerability

Severity

8.8 high

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

Exploited (CISA KEV)

Yes, since Jan 10, 2023

Federal due date Jan 31, 2023

EPSS, next 30 days

77%

Higher than 100% of scored CVEs

How it can be exploited

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

What CISA says to do

Apply updates per vendor instructions.

Affected products

Microsoft Exchange Server 2013 Cumulative Update 23, Microsoft Exchange Server 2016 Cumulative Update 22, Microsoft Exchange Server 2016 Cumulative Update 23, Microsoft Exchange Server 2019 Cumulative Update 11, Microsoft Exchange Server 2019 Cumulative Update 12. NVD's record lists the exact affected versions.

References

Questions

Is CVE-2022-41080 being exploited?

Yes. CISA added CVE-2022-41080 to its Known Exploited Vulnerabilities catalog on 2023-01-10, with a federal remediation due date of 2023-01-31. CISA lists it as used in ransomware campaigns.

How do I fix CVE-2022-41080?

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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