High MSRC-CVE-2025-55243 1 CVE

Microsoft OfficePlus Spoofing Vulnerability

Published Sep 9, 2025 · Updated Sep 9, 2025

Vendor: Microsoft

Summary

Impact: Spoofing. Microsoft rating: Important. Not known to be exploited — Exploitation Less Likely. Customer action: Required.

Details

Security updates
3.10.0.26585 — https://www.officeplus.cn/

Vulnerabilities 1

High 7.5

CVE-2025-55243

Microsoft OfficePlus Spoofing Vulnerability

Exposure of sensitive information to an unauthorized actor in Microsoft Office Plus allows an unauthorized attacker to perform spoofing over a network.

Microsoft Microsoft OfficePLUS

Sep 9, 2025

Revision history

2025-09-09 #1
Information published.

References

CVE-2025-55243 Microsoft OfficePlus Spoofing Vulnerability - HTML
https://msrc.microsoft.com/update-guide/vulnerability/CVE-2025-55243
Microsoft Exploitability Index
https://www.microsoft.com/en-us/msrc/exploitability-index?rtc=1
Microsoft Support Lifecycle
https://support.microsoft.com/lifecycle
Common Vulnerability Scoring System
https://www.first.org/cvss