Heap-Based Buffer Overflow in Microsoft Office PowerPoint by Microsoft
CVE-2026-55043

7.8HIGH

What is CVE-2026-55043?

A significant heap-based buffer overflow vulnerability has been identified in Microsoft Office PowerPoint. An unauthorized attacker could exploit this vulnerability to execute arbitrary code on the affected system. This issue arises when PowerPoint improperly handles objects in memory, allowing attackers to manipulate the program's execution path. To prevent potential attacks, users are advised to apply the necessary security updates provided by Microsoft and follow best practices for safeguarding their systems.

Affected Version(s)

Microsoft 365 Apps for Enterprise 32-bit Systems 16.0.1

Microsoft Office 2019 32-bit Systems 19.0.0

Microsoft Office 365 for Mac 1.0.0 < 16.111.26071215

References

CVSS V3.1

Score:
7.8
Severity:
HIGH
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Local
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
Required
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

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