What’s Vulnerable › Vulnerabilities
CVE-2026-26134: Microsoft Office Elevation of Privilege Vulnerability
- Severity: high (CVSS 7.8 v3.1)
- Exploited in the wild: not listed in CISA KEV
- EPSS: 0.4% probability of exploitation in the next 30 days
- Public exploit or detection template: none known
- Published: 2026-03-10 · updated 2026-06-19
- Weakness: CWE-190
Description
Integer overflow or wraparound in Microsoft Office allows an authorized attacker to elevate privileges locally.
Affected products
- Microsoft 365 Copilot: before 16.0.19822.20000 — fixed in 16.0.19822.20000
- Microsoft Office for Android: from 16.0.1 before 16.0.19822.20000 — fixed in 16.0.19822.20000
How to fix
Upgrade to a fixed version: Microsoft 365 Copilot 16.0.19822.20000; Microsoft Office for Android 16.0.19822.20000. Check the vendor advisory for mitigations.
References
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