CVE-2026-42831 PUBLISHED

Microsoft Office Remote Code Execution Vulnerability

Assigner: microsoft
Reserved: 30.04.2026 Published: 12.05.2026 Updated: 13.05.2026

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

Metrics

CVSS Vector: 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
CVSS Score: 7.8

Product Status

Vendor Microsoft
Product Microsoft Office for Android
Versions
  • affected from 16.0.1 to 16.0.19822.20190 (excl.)
Vendor Microsoft
Product Microsoft Office LTSC for Mac 2021
Versions
  • affected from 16.0.1 to 16.109.26051019 (excl.)
Vendor Microsoft
Product Microsoft Office LTSC for Mac 2024
Versions
  • affected from 16.0.0 to 16.109.26051019 (excl.)

References

Problem Types