CVE-2026-40364
8.4
Vector
CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Exploitability: 2.5 / Impact: 5.9
Source: secure@microsoft.com (Secondary)
Description
Access of resource using incompatible type ('type confusion') in Microsoft Office Word allows an unauthorized attacker to execute code locally.
Affected (12)
Products: Microsoft: 365 Apps, Office, Office Long Term Servicing Channel, Word
Related CWEs
CWE-122
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().
CWE-843
Access of Resource Using Incompatible Type ('Type Confusion')
The product 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.
CWE-908
Use of Uninitialized Resource
The product uses or accesses a resource that has not been initialized.
References (1)
Source: secure@microsoft.com
Vendor Advisory
Timeline
No history available yet.