Name: CVE-2026-81951: Heap-based Buffer Overflow
Creator: Rapid7
Published: 2026-09-08T00:00:00.000Z
License: https://www.rapid7.com/legal/website-terms-of-use/
Keywords: CVE, CVE-2026-81951, CWE-122, CVSS 7.8, EPSS 0.00426

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

CVSS Details

CVSS 3.1 Base Score: 7.8
CVSS 3.1 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)

Covered by Rapid7

Product	Vendor Advisory	Solution File	Added	Published
Microsoft Office	—	Download and install Microsoft KB5002904Upgrade to the latest version of Microsoft OfficeDownload and install Microsoft KB5002914	Sep 8, 2026	Sep 8, 2026

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CVSS Details

Covered by Rapid7

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