Oct 2025: Microsoft Excel Remote Code Execution Vulnerability
CVE-2025-59231 Published on October 14, 2025
Microsoft Excel Remote Code Execution Vulnerability
Access of resource using incompatible type ('type confusion') in Microsoft Office Excel allows an unauthorized attacker to execute code locally.
Weakness Type
What is an Object Type Confusion Vulnerability?
The program allocates or initializes a resource such as a pointer, object, or variable using one type, but it later accesses that resource using a type that is incompatible with the original type.
CVE-2025-59231 has been classified to as an Object Type Confusion vulnerability or weakness.
Products Associated with CVE-2025-59231
You can be notified by email with stack.watch whenever vulnerabilities like CVE-2025-59231 are published in these products:
Affected Versions
Microsoft 365 Apps for Enterprise:- Version 16.0.1 and below https://aka.ms/OfficeSecurityReleases is affected.
- Version 16.0.0.0 and below 16.0.5522.1000 is affected.
- Version 19.0.0 and below https://aka.ms/OfficeSecurityReleases is affected.
- Version 16.0.1 and below https://aka.ms/OfficeSecurityReleases is affected.
- Version 16.0.0 and below https://aka.ms/OfficeSecurityReleases is affected.
- Version 16.0.1 and below 16.102.25101223 is affected.
- Version 16.0.0 and below 16.102.25101223 is affected.
- Version 16.0.0.0 and below 16.0.10417.20059 is affected.
Exploit Probability
EPSS (Exploit Prediction Scoring System) scores estimate the probability that a vulnerability will be exploited in the wild within the next 30 days. The percentile shows you how this score compares to all other vulnerabilities.