Vulnerability in Microsoft 365 Apps
CVE-2025-53759
Use of uninitialized resource in Microsoft Office Excel allows an unauthorized attacker to execute code locally.
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: 0.005 (42.2th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 42nd percentile — 42.2% 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
- 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 Office — versions 2019
- Microsoft Office Long Term Servicing Channel — versions 2021, 2024
- Microsoft Office Online Server — versions 16.0.0.0
Weakness classification (CWE)
References
- msrc.microsoft.com/update-guide/vulnerability/CVE-2025-53759 (vendor-advisory, patch, Vendor Advisory)
Frequently asked questions
- What is CVE-2025-53759?
- CVE-2025-53759 is a high-severity vulnerability in Microsoft 365 Apps, classified under Use of Uninitialized Resource. CVSS score: 7.8/10. Published 2025-08-12.
- How severe is CVE-2025-53759?
- High severity. CVSS v3 base score is 7.8 out of 10.