CVE-2026-45463
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
Integer underflow (wrap or wraparound) in Microsoft Office allows an unauthorized attacker to execute code locally.
Affected (14)
Products: Microsoft: 365 Apps, 365 Copilot, Microsoft 365, Office 2016, Office 2019, Office 2021, Office 2024
Configuration A
| Vulnerable Software | Affected Versions |
|---|---|
| All versions | |
| All versions | |
| All versions | |
| All versions | |
| All versions | |
| All versions | |
| All versions |
Related CWEs
CWE-121
Stack-based Buffer Overflow
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).
CWE-191
Integer Underflow (Wrap or Wraparound)
The product subtracts one value from another, such that the result is less than the minimum allowable integer value, which produces a value that is not equal to the correct result.
References (1)
Source: secure@microsoft.com
Vendor Advisory
Timeline
No history available yet.