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PatchSiren cyber security CVE debrief

CVE-2026-96857 Microsoft CVE debrief

AI-assisted PatchSiren debrief based on the supplied source corpus. The CVE record was published on 2026-10-13T19:00:34.315Z and has not been modified since then. The NVD entry is currently unclassified. This information disclosure vulnerability in Windows Projected File System allows authorized attackers to disclose information locally. Defenders should verify exposure, assess impact, and apply patches. The vulnerability affects files or directories accessible to external parties in Windows Projected File System.

Vendor
Microsoft
Product
Windows 10 Version 1809
CVSS
MEDIUM 5.5
CISA KEV
Not listed in stored evidence
Original CVE published
2026-10-13
Original CVE updated
2026-10-14
Advisory published
2026-10-13
Advisory updated
2026-10-14

Who should care

Defenders responsible for Windows systems, particularly those with external parties accessing files or directories in Windows Projected File System, should verify exposure and assess the impact of this vulnerability.

Why it matters

CVE-2026-96857 is an information disclosure vulnerability in Windows Projected File System that allows authorized attackers to disclose information locally. Defenders should verify exposure, assess impact, and apply patches.

  • Defenders need to verify if their systems have files or directories accessible to external parties in Windows Projected File System.
  • Assess the potential for information disclosure incidents related to this vulnerability.
  • Apply patches from Microsoft to mitigate the vulnerability.
  • Monitor systems for suspicious activity related to this vulnerability.

Technical summary

The Windows Projected File System Information Disclosure Vulnerability allows an authorized attacker to disclose information locally. Files or directories accessible to external parties in Windows Projected File System are affected. This vulnerability can lead to information disclosure incidents if not properly mitigated. Defenders should prioritize verifying exposure and assessing the impact of this vulnerability on their systems.

Defensive priority

Defenders should prioritize verifying exposure and assessing the impact of this information disclosure vulnerability on their systems, particularly those with external parties accessing files or directories in Windows Projected File System.

Recommended defensive actions

  • Verify exposure by checking if files or directories in Windows Projected File System are accessible to external parties.
  • Assess the impact of this information disclosure vulnerability on systems, particularly those with external access.
  • Apply patches from Microsoft as referenced in their official advisory.
  • Monitor systems for potential information disclosure incidents related to this vulnerability.

Evidence notes

The CVE Program record and NVD vulnerability detail provide information on the Windows Projected File System Information Disclosure Vulnerability. Microsoft's official advisory is referenced, indicating a patch is available.

Sources and references

Verified primary and authoritative sources

  • CVE-2026-96857 CVE Program record

    Publisher, destination, and source semantics verified

    URL: https://www.cve.org/CVERecord?id=CVE-2026-96857

    CVE Program - Official CVE Program record with source-provided CVE metadata.

  • CVE-2026-96857 NVD vulnerability detail

    Publisher, destination, and source semantics verified

    URL: https://nvd.nist.gov/vuln/detail/CVE-2026-96857

    NIST National Vulnerability Database - Official NIST NVD detail page and source-specific vulnerability assessment.

Supplemental 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.