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 to sensitive information and execute arbitrary code.
Details
| Severity | Base Score | CVE |
|---|---|---|
| HIGH | 8.4 | CVE-2026-26109 |
Exploitation
To exploit this vulnerability, an attacker must have local access to the affected system. By crafting a specific input that triggers the out-of-bounds read condition, the attacker can manipulate the program’s execution flow. This can lead to the execution of malicious code with the same privileges as the user running Excel, potentially compromising the system.
Affected Products
- Microsoft Office Excel: A widely used spreadsheet application that is vulnerable to local code execution due to an out-of-bounds read issue.
Mitigation
To mitigate this vulnerability, users should ensure that they are running the latest version of Microsoft Office Excel with all security updates applied. Regularly updating software and following best security practices can help protect against potential exploits.