Use After Free in Microsoft 365 Apps
CVE-2025-47957
Use after free in Microsoft Office Word allows an unauthorized attacker to execute code locally.
Vulnerability class: Use-After-Free
Published · last modified .
CVSS v3 metric
CVSS v3 base score 8.4 (High). Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.013 (69.6th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 70th percentile — 69.6% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.012 · newest: 0.013 · change: +0.001
Affected products
- Microsoft 365 Apps
- Microsoft 365 Apps For Enterprise — versions 16.0.1
- Microsoft Office Ltsc 2021 — versions 16.0.1
- Microsoft Office Ltsc 2024 — versions 16.0.0
- Microsoft Office Long Term Servicing Channel — versions 2021, 2024
Weakness classification (CWE)
Public proof-of-concept exploits
References
- msrc.microsoft.com/update-guide/vulnerability/CVE-2025-47957 (vendor-advisory, patch, Vendor Advisory)
Frequently asked questions
- What is CVE-2025-47957?
- CVE-2025-47957 is a high-severity vulnerability in Microsoft 365 Apps, classified under Use After Free. CVSS score: 8.4/10. Published 2025-06-10.
- How severe is CVE-2025-47957?
- High severity. CVSS v3 base score is 8.4 out of 10.
- Is CVE-2025-47957 known to be exploited?
- 2 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.