Sep 2026: Microsoft Office Graphics Component Remote Code Execution Vulnerability
CVE-2026-78439 Published on September 8, 2026
Microsoft Office Graphics Component Remote Code Execution Vulnerability
Stack-based buffer overflow in Microsoft Graphics Component allows an unauthorized attacker to execute code over a network.
Weakness Type
What is a Stack Overflow Vulnerability?
A stack-based buffer overflow condition is a condition where the buffer being overwritten is allocated on the stack (i.e., is a local variable or, rarely, a parameter to a function).
CVE-2026-78439 has been classified to as a Stack Overflow vulnerability or weakness.
Products Associated with CVE-2026-78439
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Affected Versions
Microsoft Office 365 for Mac:- Version 1.0.0 and below 16.113.26091433 is affected.
- Version 16.0.1 and below 16.0.20430.20000 is affected.
- Version 16.0.1 and below 16.113.26091433 is affected.
- Version 16.0.0 and below 16.113.26091433 is affected.