CVE-2026-44822: 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 https://aka.ms/OfficeSecurityReleases - Upgrade
Upgrade to a fixed release to a version that resolves this vulnerability.
Fixed in 16.110.26061317 - Upgrade
Upgrade to a fixed release to a version that resolves this vulnerability.
Fixed in 16.0.5556.1001Patch KB5002877 - Upgrade
Upgrade to a fixed release to a version that resolves this vulnerability.
Fixed in 16.0.10417.20137Patch KB5002875
Event History
Frequently Asked Questions
What is the severity of CVE-2026-44822?
CVE-2026-44822 has a high severity score of 8.2.
How do I fix CVE-2026-44822?
To fix CVE-2026-44822, ensure that you are using the latest updates for Microsoft Excel and Office applications.
What type of vulnerability is CVE-2026-44822?
CVE-2026-44822 is an information disclosure vulnerability that occurs due to an out-of-bounds read in Microsoft Excel.
Which software versions are affected by CVE-2026-44822?
CVE-2026-44822 affects Microsoft Excel 2016, Microsoft 365 Apps for Enterprise, Microsoft Office Online Server, Microsoft 365 Apps, Microsoft Office 2019, Microsoft Office 2021, and Microsoft Office 2024.
Can CVE-2026-44822 be exploited remotely?
Yes, CVE-2026-44822 can be exploited by an unauthorized attacker over a network.