Vulnerability in Microsoft PowerShell 7.4

[ Description ]Official description

Improperly implemented security check for standard in Microsoft PowerShell allows an unauthorized attacker to bypass a security feature over a network.

[ Fixes ]Fixes and patches

No fix or interim patch is linked from our sources yet. Check the vendor references below and limit exposure of affected systems until a fix is available.

[ Advisories ]Government CERT advisories

• CERT-FR14 Oct 2026CERTFR-2026-AVI-1316

  Multiple vulnerabilities in Microsoft products Translated from French

  Multiple vulnerabilities have been discovered in Microsoft products. Some of them allow an attacker to cause remote arbitrary code execution, privilege escalation and remote denial of service.

  CVE-2026-88086CVE-2026-70007CVE-2026-70179+141 more CVEs
• BSI CERT-Bund13 Oct 2026WID-SEC-2026-3893

  Microsoft Entwicklerwerkzeuge: Multiple vulnerabilities Translated from German

  Risk highCVE-2026-96230CVE-2026-84008CVE-2026-102238+64 more CVEs

[ References ]References

• msrc.microsoft.com/update-guide/vulnerability/CVE-2026-96303Vendor Advisory