Microsoft · Office Excel · CVE-2026-21259
**Name of the Vulnerable Software and Affected Versions**
Microsoft Office Excel (affected versions not specified)
**Description**
A heap-based buffer overflow exists in Microsoft Office Excel that could allow an unauthorized attacker to gain elevated privileges on a local system. This issue allows attackers to affect the system.
**Recommendations**
At the moment, there is no information about a newer version that contains a fix for this vulnerability.