Jun 2026: Microsoft Office Remote Code Execution Vulnerability
CVE-2026-45645 Published on June 9, 2026
Microsoft Office Remote Code Execution Vulnerability
Heap-based buffer overflow in Microsoft Office allows an unauthorized attacker to execute code locally.
Weakness Type
Untrusted Pointer Dereference
The program obtains a value from an untrusted source, converts this value to a pointer, and dereferences the resulting pointer.
Products Associated with CVE-2026-45645
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Affected Versions
Microsoft 365 Apps for Enterprise:- Version 16.0.1 and below https://aka.ms/OfficeSecurityReleases is affected.
- Version 16.0.0 and below 16.0.5556.1001 is affected.
- Version 19.0.0 and below https://aka.ms/OfficeSecurityReleases is affected.
- Version - 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 - is affected.
- Version - is affected.