Information disclosure in Microsoft Officeplus
CVE-2025-55243
Exposure of sensitive information to an unauthorized actor in Microsoft Office Plus allows an unauthorized attacker to perform spoofing over a network.
Vulnerability class: Information Disclosure
Published · last modified .
CVSS v3 metric
CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N.
EPSS exploit prediction
EPSS: 0.011 (64.8th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 65th percentile — 64.8% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.011 · newest: 0.011 · change: 0.000
Affected products
- Microsoft Officeplus — versions 3.0.0.0
- Microsoft Officeplus
Weakness classification (CWE)
References
- msrc.microsoft.com/update-guide/vulnerability/CVE-2025-55243 (vendor-advisory, patch, Vendor Advisory)
Frequently asked questions
- What is CVE-2025-55243?
- CVE-2025-55243 is a high-severity vulnerability in Microsoft Officeplus, classified under Information Disclosure. CVSS score: 7.5/10. Published 2025-09-09.
- How severe is CVE-2025-55243?
- High severity. CVSS v3 base score is 7.5 out of 10.