ClosedPatched

Microsoft Exchange Server Privilege Escalation

Microsoft Exchange Server

Microsoft Exchange Server contains an unspecified vulnerability that allows for privilege escalation. Added to the CISA KEV catalog on 2024-02-15.

Why this severity: CVSS 9.8 (v3.1, CNA), actively exploited (CISA KEV)

Started: Feb 13, 2024
Closed: Feb 15, 2024
CVE: CVE-2024-21410

Follow this incident

Updated Feb 15, 2024

Affected

See vendor advisory (versions are not listed in the KEV record)

Fixed in

See vendor advisory linked in sources

Timeline2

Feb 15, 2024
CISA added CVE-2024-21410 to the KEV catalog (federal deadline 2024-03-07)
Source
Feb 13, 2024
CVE-2024-21410 published
Source

Advisories3

Notes & caveats

Derived from the CISA KEV JSON feed (catalogVersion 2026.10.21); CVSS from the CVE record (cveawg.mitre.org). startedAt is the CVE publication date when it fell in 2024 before the KEV listing, else the KEV dateAdded; exploitation may have begun earlier. closedAt is the KEV listing date (a fix or mitigation was available then unless noted).

Get an email when a new major security incident drops. No spam, unsubscribe any time.

Get notified