CVE-2026-70327: Microsoft Excel Information Disclosure Vulnerability
Microsoft Excel Information Disclosure Vulnerability
Other sources
Out-of-bounds read in Microsoft Office Excel allows an unauthorized attacker to disclose information over a network.
— 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 16.0.5565.1001Patch KB5002903 - Upgrade
Upgrade to a fixed release to a version that resolves this vulnerability.
Fixed in 16.112.26081010 - Upgrade
Upgrade to a fixed release to a version that resolves this vulnerability.
Fixed in https://aka.ms/OfficeSecurityReleases
Event History
Frequently Asked Questions
What is the severity of CVE-2026-70327?
The severity of CVE-2026-70327 is classified as medium with a score of 6.5.
What software is affected by CVE-2026-70327?
CVE-2026-70327 impacts Microsoft Excel 2016, Microsoft 365 Apps for Enterprise, Microsoft Office LTSC for Mac 2024, and various editions of Microsoft Office LTSC 2021 and 2024.
How do I fix CVE-2026-70327?
To remediate CVE-2026-70327, ensure that your Microsoft Excel and Office installations are updated with the latest security patches.
What type of vulnerability is CVE-2026-70327?
CVE-2026-70327 is an information disclosure vulnerability that allows unauthorized attackers to perform out-of-bounds reads and disclose sensitive information.
Can CVE-2026-70327 be exploited remotely?
Yes, CVE-2026-70327 can be exploited remotely over a network.