CVE-2026-50665 Microsoft CVE debrief

Who should care

Users of Microsoft Office, particularly those in environments where Office is widely used, should be aware of this vulnerability and take steps to mitigate it. This includes applying patches released by Microsoft, inventorying and updating affected Microsoft Office installations, monitoring for suspicious activity, and implementing compensating controls where necessary.

Technical summary

The vulnerability is an out-of-bounds read in Microsoft Office, which allows an unauthorized attacker to disclose information locally. The CVSS score is 7.8 and the severity is HIGH. This issue affects Microsoft Office installations and could be exploited for local information disclosure. Users should apply patches released by Microsoft and inventory and update affected Microsoft Office installations.

Defensive priority

High priority should be given to patching this vulnerability as it allows for local information disclosure and affects widely used software.

Recommended defensive actions

• Apply patches released by Microsoft
• Inventory and update affected Microsoft Office installations
• Monitor for suspicious activity
• Implement compensating controls
• Retest and verify patch effectiveness

Evidence notes

The CVE record was published on 2026-07-14T18:18:00.080Z and was last modified on 2026-07-16T15:15:36.480Z. The NVD entry is currently Analyzed. This vulnerability affects Microsoft Office, potentially allowing unauthorized attackers to disclose information locally. Users should verify their Office installations and apply patches as recommended by Microsoft. The CVE details are sourced from official records, but specific product impacts and exploit details remain limited.

Official resources