RCE in Microsoft 365 Apps For Enterprise
CVE-2024-21378
Microsoft Outlook Remote Code Execution Vulnerability
Vulnerability class: RCE (Remote Code Execution)
EPSS: 0.273 (96.5th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 8.8 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C.
Affected products
- Microsoft 365 Apps For Enterprise — versions 16.0.1
- Microsoft Office 2019 — versions 19.0.0
- Microsoft Office Ltsc 2021 — versions 16.0.1
- Microsoft Outlook 2016 — versions 16.0.0.0
Weakness classification (CWE)
Public proof-of-concept exploits
References
- Microsoft Outlook Remote Code Execution Vulnerability (vendor-advisory)
Frequently asked questions
- What is CVE-2024-21378?
- CVE-2024-21378 is a high-severity vulnerability in Microsoft 365 Apps For Enterprise, classified under Code Injection. CVSS score: 8.8/10. Published 2024-02-13.
- How severe is CVE-2024-21378?
- High severity. CVSS v3 base score is 8.8 out of 10.
- Is CVE-2024-21378 known to be exploited?
- 5 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.