CVE-2026-70310: Microsoft Word Information Disclosure Vulnerability
Microsoft Word Information Disclosure Vulnerability
Other sources
Out-of-bounds read in Microsoft Office Word 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 16.112.26081010 - 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 16.0.5565.1000Patch KB5002901
Event History
Frequently Asked Questions
What is the severity of CVE-2026-70310?
The severity of CVE-2026-70310 is medium, rated at 5.5.
What does CVE-2026-70310 do?
CVE-2026-70310 allows an unauthorized attacker to disclose information locally due to an out-of-bounds read in Microsoft Word.
Which products are affected by CVE-2026-70310?
CVE-2026-70310 affects Microsoft Word 2016, Microsoft 365 Apps for Enterprise, and various versions of Microsoft Office for both Windows and Mac.
How can I mitigate CVE-2026-70310?
To mitigate CVE-2026-70310, ensure that your Microsoft Word application is updated to the latest version.
Is CVE-2026-70310 remotely exploitable?
CVE-2026-70310 is not remotely exploitable as it requires local access to the affected software.