Nov 2026: Microsoft Office Excel Remote Code Execution Vulnerability
CVE-2026-118726 Published on November 10, 2026
Microsoft Office Excel Remote Code Execution Vulnerability
Heap-based buffer overflow in Microsoft Office Excel allows an unauthorized attacker to execute code over a network.
Vulnerability Analysis
Weakness Types
Heap-based Buffer Overflow
A heap overflow condition is a buffer overflow, where the buffer that can be overwritten is allocated in the heap portion of memory, generally meaning that the buffer was allocated using a routine such as malloc().
What is an off-by-five Vulnerability?
A product calculates or uses an incorrect maximum or minimum value that is 1 more, or 1 less, than the correct value.
CVE-2026-118726 has been classified to as an off-by-five vulnerability or weakness.
Products Associated with CVE-2026-118726
Want to know whenever a new CVE is published for Microsoft products? stack.watch will email you.
