Product:
Microsoft Office Excel
Summary
Out-of-bounds read in Microsoft Office Excel allows an unauthorized attacker to execute code locally. This vulnerability can lead to significant impacts on confidentiality, integrity, and availability. Attackers can exploit this flaw to gain unauthorized access and execute arbitrary code.
Details
| Severity | Base Score | CVE |
|---|---|---|
| HIGH | 7.8 | CVE-2026-20946 |
Exploitation
To exploit this vulnerability, an attacker must have local access to the affected system and must interact with the vulnerable application. By crafting a specific input that triggers the out-of-bounds read, the attacker can manipulate the application’s memory, potentially leading to code execution with the privileges of the user running the application.
Affected Products
- Microsoft Office Excel: Affected by an out-of-bounds read vulnerability that allows unauthorized code execution.
Mitigation
To mitigate this vulnerability, users should ensure that they are running the latest version of Microsoft Office Excel and apply any available security updates. Additionally, restricting local access to sensitive systems can help reduce the risk of exploitation.