CVE-2026-70314 Microsoft CVE debrief

Who should care

Defenders and administrators of Microsoft Office products should assess exposure and apply patches. This vulnerability affects Microsoft Office products and could allow an attacker to disclose information locally. The vulnerability has a medium severity and defenders should assess exposure and apply patches. Security teams and vulnerability management teams should review the CVE record and NVD entry for details on  

Why it matters

CVE-2026-70314 is a medium-severity vulnerability in Microsoft Office that allows unauthorized local information disclosure. Defenders should assess exposure, apply patches, and monitor for potential risks.

• Verify and apply patches for affected Microsoft Office versions
• Assess and mitigate unauthorized local access risks
• Monitor for potential information disclosure attempts

Technical summary

The vulnerability is due to improper input validation in Microsoft Office, allowing an unauthorized attacker to disclose information locally. This vulnerability affects Microsoft Office products and could allow an attacker to disclose information locally. The vulnerability has a medium severity and defenders should assess exposure and apply patches. The CVE record and NVD entry provide details on the vulnerability.

Defensive priority

Assess exposure and apply patches for Microsoft Office products.

Recommended defensive actions

• Inventory and assess Microsoft Office products for exposure
• Apply patches from Microsoft for affected versions
• Monitor for unauthorized local access attempts

Evidence notes

The CVE record and NVD entry provide details on the vulnerability. Vendor advisory and patch information are available. The vulnerability is caused by improper input validation in Microsoft Office, allowing an unauthorized attacker to disclose information locally. The CVE Program record (CVE-2026-70314) and NVD detail page provide source-provided CVE metadata and vulnerability assessment. Affected product deployments should be reviewed for exposure, and patches should be applied. Comp

Sources and references

Methodology and review provenance

AI-assisted synthesis based on stored public vulnerability evidence. System validation, approval state, and publication status do not by themselves establish human review of this revision. PatchSiren helps prioritize defensive review and does not prove exposure or remediation on any system.