CVE-2026-78439 PUBLISHED

Microsoft Office Graphics Component Remote Code Execution Vulnerability

Assigner: microsoft
Reserved: 24.08.2026 Published: 08.09.2026 Updated: 09.09.2026

Stack-based buffer overflow in Microsoft Graphics Component allows an unauthorized attacker to execute code over a network.

Metrics

CVSS Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C
CVSS Score: 8.8

Product Status

Vendor Microsoft
Product Microsoft Office 365 for Mac
Versions
  • Version - is affected
Vendor Microsoft
Product Microsoft Office for Android
Versions
  • affected from 16.0.1 to 16.0.20430.20000 (excl.)
Vendor Microsoft
Product Microsoft Office LTSC for Mac 2021
Versions
  • Version - is affected
Vendor Microsoft
Product Microsoft Office LTSC for Mac 2024
Versions
  • Version - is affected

References

Problem Types