CVE-2026-49784 Microsoft CVE debrief

Who should care

System administrators and users of Microsoft Windows App Store should be aware of this vulnerability and take necessary precautions to prevent potential privilege escalation attacks.

Technical summary

CVE-2026-49784 is a race condition vulnerability in Microsoft Windows App Store, caused by concurrent execution using a shared resource with improper synchronization. This vulnerability has a CVSS score of 7 and is classified as HIGH severity. The vulnerability can be exploited locally by an authorized attacker to elevate privileges.

Defensive priority

High priority should be given to patching or mitigating this vulnerability, as it can allow for local privilege escalation.

Recommended defensive actions

• Apply patches or updates provided by Microsoft to address the vulnerability.
• Implement compensating controls, such as monitoring and access controls, to reduce the risk of exploitation.
• Conduct regular vulnerability assessments and inventory checks to ensure the vulnerability is not present in the environment.

Evidence notes

The CVE record and NVD entry provide limited information about the vulnerability. Further investigation and verification are necessary to fully understand the scope and impact of the vulnerability.

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.