CVE-2026-26134

—

CVSS 3.1

7.8 high

EPSS

<1%p29

Published

Mar 10, 2026 (Mar 10, 2026)

Modified

Jun 17, 2026

Description

Integer overflow or wraparound in Microsoft Office allows an authorized attacker to elevate privileges locally.

Vendors: microsoft
Products: 365 copilot
Weakness: CWE-190, CWE-416
Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

NVD CVE.org GitHub PoCs EPSS (0.4%)

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