Microsoft CVE-2026-26134
HIGHCVSS VectorNVD
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Lifecycle Timeline
2DescriptionNVD
Integer overflow or wraparound in Microsoft Office allows an authorized attacker to elevate privileges locally.
AnalysisAI
Microsoft Office is vulnerable to an integer overflow that allows authenticated local users to escalate their privileges and gain full system control. An attacker with valid credentials can exploit this numeric calculation flaw to execute arbitrary code with elevated permissions. …
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RemediationAI
Within 24 hours: Inventory all Microsoft Office deployments and identify users with administrative or sensitive data access. Within 7 days: Implement application whitelisting and restrict Office macro execution to trusted sources; disable unnecessary Office features (DDE, ActiveX) via Group Policy. …
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