Unrated severityNVD Advisory· Published Jul 14, 2026· Updated Aug 3, 2026

Windows Network File System Remote Code Execution Vulnerability

CVE-2026-56649

Description

Concurrent execution using shared resource with improper synchronization ('race condition') in Windows Network File System allows an unauthorized attacker to execute code over a network.

Affected products

Microsoft/Windows Network File Systemllm-fuzzy

Patches

Vulnerability mechanics

References

msrc.microsoft.com/update-guide/vulnerability/CVE-2026-56649mitrevendor-advisorypatch

News mentions

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