CVE-2026-81386 PUBLISHED

Microsoft Excel Remote Code Execution Vulnerability

Assigner: microsoft
Reserved: 26.08.2026 Published: 08.09.2026 Updated: 09.09.2026

Heap-based buffer overflow in Microsoft Office Excel 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 365 Apps for Enterprise
Versions
  • affected from 16.0.1 to 16.0.20326.20138 (excl.)
Vendor Microsoft
Product Microsoft Excel 2016
Versions
  • affected from 16.0.0.0 to 16.0.5569.1003 (excl.)
Vendor Microsoft
Product Microsoft Office 2016
Versions
  • affected from 16.0.0 to 16.0.5569.1003 (excl.)
Vendor Microsoft
Product Microsoft Office 2019
Versions
  • affected from 19.0.0 to 16.0.10417.20207 (excl.)
Vendor Microsoft
Product Microsoft Office 365 for Mac
Versions
  • Version - is affected
Vendor Microsoft
Product Microsoft Office LTSC 2021
Versions
  • affected from 16.0.1 to 16.0.14334.20906 (excl.)
Vendor Microsoft
Product Microsoft Office LTSC 2024
Versions
  • affected from 16.0.0 to 16.0.17932.20976 (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