Buffer overflow in Microsoft 365 Apps
CVE-2025-32717
Heap-based buffer overflow in Microsoft Office Word allows an unauthorized attacker to execute code locally.
Vulnerability class: Buffer Overflow
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: 0.005 (43.0th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 43rd percentile — 43.0% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.005 · newest: 0.005 · change: +0.000
Affected products
- Microsoft 365 Apps
- Microsoft 365 Apps For Enterprise — versions 16.0.1
Weakness classification (CWE)
Public proof-of-concept exploits
References
- msrc.microsoft.com/update-guide/vulnerability/CVE-2025-32717 (vendor-advisory, patch, Vendor Advisory)
Frequently asked questions
- What is CVE-2025-32717?
- CVE-2025-32717 is a high-severity vulnerability in Microsoft 365 Apps, classified under Heap-based Buffer Overflow. CVSS score: 8.4/10. Published 2025-06-11.
- How severe is CVE-2025-32717?
- High severity. CVSS v3 base score is 8.4 out of 10.
- Is CVE-2025-32717 known to be exploited?
- 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.