CVE-2026-70214: Microsoft Office Excel Information Disclosure Vulnerability
Microsoft Office Excel Information Disclosure Vulnerability
Other sources
Out-of-bounds read in Microsoft Office Excel allows an unauthorized attacker to disclose information locally.
— Microsoft
Affected Software
Remediation
Recommended actions to resolve this vulnerability, in priority order.
- Upgrade
Upgrade to a fixed release to a version that resolves this vulnerability.
Fixed in 16.0.17932.21056 - Upgrade
Upgrade to a fixed release to a version that resolves this vulnerability.
Fixed in 16.0.14334.20974 - Upgrade
Upgrade to a fixed release to a version that resolves this vulnerability.
Fixed in https://aka.ms/OfficeSecurityReleases
Event History
Frequently Asked Questions
Which Office deployments are identified as affected?
The affected products listed are Microsoft 365 Apps for Enterprise and Microsoft Office LTSC 2021 and 2024, in both 32-bit and 64-bit editions where specified.
What access and interaction are required for exploitation?
The CVSS vector indicates local attack access, no privileges required, and user interaction required. This means an attacker must be able to act locally and requires a user to interact as part of exploitation.
What is the expected security impact?
The vulnerability affects confidentiality, with a high confidentiality impact in the supplied CVSS vector. Integrity and availability impacts are rated as none.