Name: CVE-2026-21261: Out-of-bounds Read
Creator: Rapid7
Published: 2026-02-10T00:00:00.000Z
License: https://www.rapid7.com/legal/website-terms-of-use/
Keywords: CVE, CVE-2026-21261, CVSS 5.5, EPSS 0.00637

Out-of-bounds read in Microsoft Office Excel allows an unauthorized attacker to disclose information locally.

CVSS Details

CVSS 3.1 Base Score: 5.5
CVSS 3.1 Vector: (CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N/E:U/RL:O/RC:C)

Covered by Rapid7

Product	Vendor Advisory	Solution File	Added	Published
Microsoft Office	—	Download and install Microsoft KB5002837Upgrade to the latest version of Microsoft OfficeDownload and install Microsoft KB5002835	Feb 10, 2026	Feb 10, 2026

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CVSS Details

Covered by Rapid7

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