CVE-2026-64899: Microsoft Office Information Disclosure Vulnerability
Microsoft Office Information Disclosure Vulnerability
Other sources
Out-of-bounds read in Microsoft Office 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 https://aka.ms/OfficeSecurityReleases - 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 16.0.5565.1001Patch KB5002897
Event History
Frequently Asked Questions
What is the severity of CVE-2026-64899?
The severity of CVE-2026-64899 is medium with a score of 5.5.
What does CVE-2026-64899 affect?
CVE-2026-64899 affects various versions of Microsoft Office and Microsoft 365 Apps for Enterprise.
How does CVE-2026-64899 allow information disclosure?
CVE-2026-64899 allows unauthorized attackers to disclose information through an out-of-bounds read.
Is CVE-2026-64899 exploitable remotely?
CVE-2026-64899 requires user interaction, making it less likely to be exploited remotely.
How can I protect against CVE-2026-64899?
The best protection against CVE-2026-64899 is to apply the latest security updates provided by Microsoft.