CVE-2026-81388
Stack-based buffer overflow in Microsoft Office Excel allows an unauthorized attacker to execute code locally.
Scoring
- Severity
- HIGH
- CVSS base score
- 7.8
- 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
- CWE
- CWE-121
- Published
- 2026-09-08
- Last modified
- 2026-09-09
Affected products
- Microsoft Microsoft 365 Apps for Enterprise
- Microsoft Microsoft Excel 2016
- Microsoft Microsoft Office 2016
- Microsoft Microsoft Office 2019
- Microsoft Microsoft Office 365 for Mac
- Microsoft Microsoft Office LTSC 2021
- Microsoft Microsoft Office LTSC 2024
- Microsoft Microsoft Office LTSC for Mac 2021
Weakness type
Related vulnerabilities
- CVE-2026-85384 — Authenticated Stack-Based Buffer Overflow in RE210 AC750 Configuration Import
- CVE-2026-83990 — Microsoft Graphics Component Elevation of Privilege Vulnerability
- CVE-2026-81953 — Microsoft Excel Remote Code Execution Vulnerability
- CVE-2026-81396 — Microsoft Excel Remote Code Execution Vulnerability
- CVE-2026-73006 — DirectWrite Remote Code Execution Vulnerability
- CVE-2026-69614 — Microsoft Office Access Remote Code Execution Vulnerability
- CVE-2026-69510 — Windows DHCP Server Remote Code Execution Vulnerability
- CVE-2026-69910 — Windows Hyper-V Remote Code Execution Vulnerability