Microsoft PowerShell Security Feature Bypass Vulnerability

{
  "id": "de33f7801350e4bb189ba2e96f7fad6765d834bd7b96d44f22713bd79a6b5cf8",
  "url": "https://osv.dev/vulnerability/BIT-powershell-2026-96303",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "Microsoft PowerShell Security Feature Bypass Vulnerability",
    "summary": "Improperly implemented security check for standard in Microsoft PowerShell allows an unauthorized attacker to bypass a security feature over a network.",
    "evidence": "osv:BIT-powershell-2026-96303",
    "products": [
      {
        "name": {
          "value": "powershell",
          "evidence": "/affected/0/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [
          {
            "value": "7.4.21",
            "evidence": "/affected/0/ranges"
          },
          {
            "value": "7.5.12",
            "evidence": "/affected/0/ranges"
          },
          {
            "value": "7.6.7",
            "evidence": "/affected/0/ranges"
          }
        ],
        "affected_versions": []
      }
    ],
    "severity": "medium",
    "structured": {
      "id": "BIT-powershell-2026-96303",
      "aliases": [
        "BIT-powershell-2026-96303",
        "CVE-2026-96303"
      ],
      "affected": [
        {
          "ranges": [
            {
              "type": "SEMVER",
              "events": [
                {
                  "introduced": "7.4.0"
                },
                {
                  "fixed": "7.4.21"
                },
                {
                  "introduced": "7.5.0"
                },
                {
                  "fixed": "7.5.12"
                },
                {
                  "introduced": "7.6.0"
                },
                {
                  "fixed": "7.6.7"
                }
              ]
            }
          ],
          "package": {
            "name": "powershell",
            "purl": "pkg:bitnami/powershell",
            "ecosystem": "Bitnami"
          },
          "severity": [
            {
              "type": "CVSS_V3",
              "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N"
            }
          ],
          "database_specific": {
            "source": "https://github.com/bitnami/vulndb/tree/main/data/powershell/BIT-powershell-2026-96303.json"
          }
        }
      ],
      "modified": "2026-10-20T10:30:05.591419135Z",
      "provider": "osv",
      "references": [
        "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-96303",
        "https://nvd.nist.gov/vuln/detail/CVE-2026-96303"
      ],
      "provider_metadata": {
        "cpes": [
          "cpe:2.3:a:microsoft:powershell:*:*:*:*:*:*:*:*"
        ],
        "severity": "Medium"
      }
    },
    "related_cves": [
      {
        "value": "CVE-2026-96303",
        "evidence": "/aliases"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/database_specific/severity"
  },
  "source_id": "core-osv",
  "document_id": 379080,
  "published_at": "2026-10-20T08:54:44.52+00:00"
}