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CVE-2026-70585 Microsoft CVE debrief

CVE-2026-70585 debrief based on the supplied source corpus. The CVE record was published on 2026-09-08T18:20:11.657Z and has not been modified since then. The vulnerability exists in the Windows Services for NFS ONCRPC XDR Driver and allows an authorized attacker to execute code locally due to a use after free issue. Defenders should verify exposure and apply patches for Windows Services for NFS ONCRPC XDR Driver. The CVE record and NVD entry provide details on the use after free vulnerability in Windows Services for NFS ONCRPC XDR Driver. The vulnerability has a high-severity score of 7 and is classified as HIGH. The CVE Program record and NVD detail page provide official metadata

Vendor
Microsoft
Product
Windows Server 2012
CVSS
HIGH 7
CISA KEV
Not listed in stored evidence
Original CVE published
2026-09-08
Original CVE updated
2026-09-17
Advisory published
2026-09-08
Advisory updated
2026-09-17

Who should care

Defenders responsible for Windows Server systems, particularly those using Windows Services for NFS, should assess exposure and apply patches.

Why it matters

CVE-2026-70585 is a high-severity vulnerability in Windows Services for NFS ONCRPC XDR Driver that allows authorized attackers to execute code locally. Defenders should verify exposure, apply patches, and monitor for potential attacks.

  • Potential local code execution
  • Verification of exposure and patching required
  • Monitoring for potential attacks

Technical summary

The vulnerability exists in the Windows Services for NFS ONCRPC XDR Driver and allows an authorized attacker to execute code locally due to a use after free issue. The vulnerability has a high-severity score of 7 and is classified as HIGH. The CVE record and NVD entry provide details on the use after free vulnerability in Windows Services for NFS ONCRPC XDR Driver. Defenders should verify exposure and apply patches for Windows Services for NFS ONCRPC XDR Driver.

Defensive priority

Defenders should prioritize verifying exposure and applying patches for Windows Services for NFS ONCRPC XDR Driver.

Recommended defensive actions

  • Verify exposure of Windows Services for NFS ONCRPC XDR Driver in the environment
  • Apply patches provided by Microsoft
  • Monitor for potential local code execution attempts

Evidence notes

The CVE record and NVD entry provide details on the use after free vulnerability in Windows Services for NFS ONCRPC XDR Driver. The vulnerability exists in the Windows Services for NFS ONCRPC XDR Driver and allows an authorized attacker to execute code locally due to a use after free issue. The CVE record was published on 2026-09-08T18:20:11.657Z and has not been modified since then. The NVD entry and CVE Program record provide official metadata on the vulnerability.

Sources and references

Verified primary and authoritative sources

  • CVE-2026-70585 CVE Program record

    Publisher, destination, and source semantics verified

    URL: https://www.cve.org/CVERecord?id=CVE-2026-70585

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

  • CVE-2026-70585 NVD vulnerability detail

    Publisher, destination, and source semantics verified

    URL: https://nvd.nist.gov/vuln/detail/CVE-2026-70585

    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.