CVE-2022-41080
Published 2022-11-09 · Updated 2026-08-10 · Source secure@microsoft.com
Summary
CVE-2022-41080 is a high-severity (CVSS 8.8) vulnerability in Microsoft Exchange Server. CISA added it to the Known Exploited Vulnerabilities catalog on January 10, 2023, which means exploitation in the wild has been confirmed; US federal agencies had to remediate it by January 31, 2023. CISA also lists it as known to be used in ransomware campaigns, so it should be prioritised accordingly. Microsoft has 390 vulnerabilities in the KEV catalog, 117 of them linked to ransomware.
All 390 known-exploited Microsoft vulnerabilities →Description
Microsoft Exchange Server Elevation of Privilege Vulnerability
CVSS vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
CISA Known-Exploited Vulnerability
Product: Microsoft — Exchange Server
Name: Microsoft Exchange Server Privilege Escalation Vulnerability
Date added: 2023-01-10 · Due: 2023-01-31
Required action: Apply updates per vendor instructions.