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PatchSiren cyber security CVE debrief

CVE-2026-62801 Microsoft CVE debrief

A path traversal vulnerability in Windows PowerShell could allow an unauthorized attacker to bypass a security feature over a network. Multiple Windows versions and server releases are affected. Microsoft has released a patch for this vulnerability. Defenders should review the official CVE record and NVD detail page for more information on affected systems and to verify patches. The CVE record was published on 2026-09-08T18:18:02.860Z and has not been modified since then. The NVD entry is currently Analyzed.

Vendor
Microsoft
Product
Windows 10 Version 1607
CVSS
MEDIUM 6.5
CISA KEV
Not listed in stored evidence
Original CVE published
2026-09-08
Original CVE updated
2026-09-16
Advisory published
2026-09-08
Advisory updated
2026-09-16

Who should care

Defenders and administrators of Windows systems and servers should assess exposure and apply patches immediately. This includes reviewing and updating inventory of Windows systems and servers to ensure they are up-to-date and monitoring for potential unauthorized access attempts. Security teams should prioritize patching based on risk assessment and verify security features are up-to-date.

Why it matters

CVE-2026-62801 is a path traversal vulnerability in Windows PowerShell that could allow an unauthorized attacker to bypass a security feature over a network. Defenders and administrators of Windows systems and servers should assess exposure and apply patches immediately.

  • Verify and apply patches for affected Windows systems and servers
  • Review and update inventory of Windows systems and servers to ensure they are up-to-date
  • Monitor for potential unauthorized access attempts

Technical summary

CVE-2026-62801 is a path traversal vulnerability in Windows PowerShell that could allow an unauthorized attacker to bypass a security feature over a network. The vulnerability affects multiple Windows versions and server releases, including Windows 10, Windows 11, and Windows Server. Microsoft has released a patch for this vulnerability.

Defensive priority

Apply patches for CVE-2026-62801 immediately, especially for exposed systems.

Recommended defensive actions

  • Apply patches for CVE-2026-62801
  • Review and update inventory of Windows systems and servers
  • Verify security features are up-to-date

Evidence notes

The CVE record and NVD detail page provide information on the vulnerability and affected systems. Microsoft has released a patch and advisory for this issue.

Sources and references

Verified primary and authoritative sources

  • CVE-2026-62801 CVE Program record

    Publisher, destination, and source semantics verified

    URL: https://www.cve.org/CVERecord?id=CVE-2026-62801

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

  • CVE-2026-62801 NVD vulnerability detail

    Publisher, destination, and source semantics verified

    URL: https://nvd.nist.gov/vuln/detail/CVE-2026-62801

    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.