Out-of-bounds read in Microsoft Office - CVE-2026-97744

Vulnerability details

The vulnerability allows a remote attacker to read small portions of heap memory.

The vulnerability exists due to an out-of-bounds read in Microsoft Office PowerPoint when previewing content. A remote attacker can trigger the vulnerability through the Preview Pane to read small portions of heap memory.

Exploitation requires user interaction.

Affected software

How to mitigate CVE-2026-97744

External References

• https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2026-97744
• https://learn.microsoft.com/en-us/officeupdates/microsoft365-apps-security-updates

Related Security Bulletins

• Multiple vulnerabilities in Microsoft Office