High severity8.8NVD Advisory· Published Oct 13, 2026· Updated Oct 13, 2026

CVE-2026-70149

Description

Exposure of sensitive information to an unauthorized actor in Windows Client Side Caching driver (csc.sys) allows an authorized attacker to disclose information locally.

Affected products

Microsoft/Windows Client-Side Cachingllm-fuzzy

Patches

Vulnerability mechanics

References

msrc.microsoft.com/update-guide/vulnerability/CVE-2026-70149nvd

News mentions

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