Vulnerability in Microsoft 365 Apps
CVE-2025-21363
Microsoft Word Remote Code Execution Vulnerability
Published · last modified .
CVSS v3 metric
CVSS v3 base score 7.8 (High). Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.008 (53.3th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 53rd percentile — 53.3% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.008 · newest: 0.008 · change: 0.000
Affected products
- Microsoft 365 Apps
- Microsoft 365 Apps For Enterprise — versions 16.0.1
- Microsoft Office Ltsc 2024 — versions 16.0.0
- Microsoft Office Ltsc For Mac 2021 — versions 16.0.1
- Microsoft Office Ltsc For Mac 2024 — versions 16.0.0
- Microsoft Office Long Term Servicing Channel — versions 2021, 2024
Weakness classification (CWE)
References
- msrc.microsoft.com/update-guide/vulnerability/CVE-2025-21363 (vendor-advisory, Patch, patch, Vendor Advisory)
Frequently asked questions
- What is CVE-2025-21363?
- CVE-2025-21363 is a high-severity vulnerability in Microsoft 365 Apps, classified under Untrusted Pointer Dereference. CVSS score: 7.8/10. Published 2025-01-14.
- How severe is CVE-2025-21363?
- High severity. CVSS v3 base score is 7.8 out of 10.