CVE-2026-42831

high Microsoft
CVSS v3 Base Score
7.8
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C
Attack Characteristics
Attack Vector
Local
Attack Complexity
Low
Privileges Required
None
User Interaction
Required
Confidentiality
High
Integrity
High
Availability
High
Published: May 12, 2026 (1 days ago)
Last Modified: May 13, 2026
Vendor: Microsoft
Source: MITRE

Description

Heap-based buffer overflow in Microsoft Office allows an unauthorized attacker to execute code locally.

CWE

CWE-122

Affected Products

Microsoft Microsoft Office for AndroidMicrosoft Microsoft Office LTSC for Mac 2021Microsoft Microsoft Office LTSC for Mac 2024

References

🔗 msrc.microsoft.com