What’s Vulnerable › Vulnerabilities

CVE-2026-33822: Microsoft Word Information Disclosure Vulnerability

• Severity: medium (CVSS 6.1 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: 2026-04-14 · updated 2026-10-15
• Weakness: CWE-125

Description

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

Affected products

• Microsoft 365 Apps: all versions
• Microsoft Office LTSC for Mac 2021: 2021, 2024
• Microsoft 365 Apps: from 16.0.1 before https://aka.ms/OfficeSecurityReleases — fixed in https://aka.ms/OfficeSecurityReleases
• Microsoft Office LTSC for Mac 2024: from 16.0.0 before 16.108.26041219 — fixed in 16.108.26041219
• Microsoft Office LTSC for Mac 2021: from 16.0.1 before 16.108.26041219 — fixed in 16.108.26041219

How to fix

Upgrade to a fixed version: Microsoft 365 Apps https://aka.ms/OfficeSecurityReleases; Microsoft Office LTSC for Mac 2024 16.108.26041219; Microsoft Office LTSC for Mac 2021 16.108.26041219. Check the vendor advisory for mitigations.

References

• https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-33822

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