Use After Free in Microsoft 365 Apps
CVE-2025-49699
Use after free in Microsoft Office allows an unauthorized attacker to execute code locally.
Vulnerability class: Use-After-Free
Published · last modified .
CVSS v3 metric
CVSS v3 base score 7.0 (High). Vector: CVSS:3.1/AV:L/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.004 (30.4th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 30th percentile — 30.4% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.003 · newest: 0.004 · change: +0.001
Affected products
- Microsoft 365 Apps
- 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 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 Outlook 2016 — versions 16.0.0.0
- Microsoft Powerpoint 2016 — versions 16.0.0
- Microsoft Word 2016 — versions 16.0.1
Weakness classification (CWE)
References
- msrc.microsoft.com/update-guide/vulnerability/CVE-2025-49699 (vendor-advisory, patch, Vendor Advisory)
Frequently asked questions
- What is CVE-2025-49699?
- CVE-2025-49699 is a high-severity vulnerability in Microsoft 365 Apps, classified under Use After Free. CVSS score: 7.0/10. Published 2025-07-08.
- How severe is CVE-2025-49699?
- High severity. CVSS v3 base score is 7.0 out of 10.