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Linux Distros Unpatched Vulnerability : CVE-2026-47303

🗓️ 16 Jul 2026 00:00:00Reported by TenableType 
nessus
 nessus🔗 www.tenable.com👁 6 Views

Linux systems with unpatched vulnerability CVE-2026-47303 allows authentication bypass and privilege elevation.

Related
Refs
Code
ReporterTitlePublishedViews
Family
ATTACKERKB		CVE-2026-47303
14 Jul 202618:45
–attackerkb
AlpineLinux		CVE-2026-47303
14 Jul 202618:45
–alpinelinux
Circl		CVE-2026-47303
14 Jul 202619:01
–circl
CVE		CVE-2026-47303
14 Jul 202618:45
–cve
Cvelist		CVE-2026-47303 ASP.NET Core Elevation of Privilege Vulnerability
14 Jul 202618:45
–cvelist
Oracle linux		.NET 9.0 security, bug fix, and enhancement update
20 Jul 202600:00
–oraclelinux
Oracle linux		.NET 9.0 security, bug fix, and enhancement update
20 Jul 202600:00
–oraclelinux
Oracle linux		.NET 10.0 security, bug fix, and enhancement update
20 Jul 202600:00
–oraclelinux
Oracle linux		.NET 10.0 security, bug fix, and enhancement update
20 Jul 202600:00
–oraclelinux
Oracle linux		.NET 9.0 security, bug fix, and enhancement update
20 Jul 202600:00
–oraclelinux
Rows per page
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##
# (C) Tenable, Inc.
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  - Authentication bypass by assumed-immutable data in ASP.NET Core allows an authorized attacker to elevate
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  script_category(ACT_GATHER_INFO);
  script_family(english:"Misc.");

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  script_dependencies("ssh_get_info2.nasl", "set_linux_os_id.nasl");
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  exit(0);
}

if (!get_kb_item("global_settings/vendor_unpatched")) exit(0, "Unpatched Vulnerabilities Detection not active.");
if (!get_kb_item("Host/local_checks_enabled")) audit(AUDIT_LOCAL_CHECKS_NOT_ENABLED);
if (empty_or_null(get_one_kb_item("Host/CentOS/rpm-list")) && empty_or_null(get_one_kb_item("Host/Debian/dpkg-l")) && empty_or_null(get_one_kb_item("Host/RedHat/rpm-list"))) audit(AUDIT_PACKAGE_LIST_MISSING);

include('linux_unpatched.inc');

var distro_constraints_array = {
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    "package_manager": "dpkg-l",
    "constraints": [
      {
        "release": "22.04",
        "pkgs": [
          {"reference": "dotnet6"},
          {"reference": "dotnet7"}
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      }
    ]
  },
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    "package_manager": "rpm-list",
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          {"reference": "dotnet-host"},
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          {"reference": "dotnet9.0"},
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        ]
      }
    ]
  },
  "CentOS Linux-8": {
    "package_manager": "rpm-list",
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      {
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        "pkgs": [
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          {"reference": "aspnetcore-targeting-pack-10.0"},
          {"reference": "aspnetcore-targeting-pack-8.0"},
          {"reference": "aspnetcore-targeting-pack-9.0"},
          {"reference": "dotnet"},
          {"reference": "dotnet-apphost-pack-10.0"},
          {"reference": "dotnet-apphost-pack-8.0"},
          {"reference": "dotnet-apphost-pack-9.0"},
          {"reference": "dotnet-host"},
          {"reference": "dotnet-hostfxr-10.0"},
          {"reference": "dotnet-hostfxr-8.0"},
          {"reference": "dotnet-hostfxr-9.0"},
          {"reference": "dotnet-runtime-10.0"},
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  "Red Hat Enterprise Linux-8": {
    "package_manager": "rpm-list",
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      {
        "release": "8",
        "pkgs": [
          {"reference": "aspnetcore-runtime-10.0"},
          {"reference": "aspnetcore-runtime-8.0"},
          {"reference": "aspnetcore-runtime-9.0"},
          {"reference": "aspnetcore-runtime-dbg-10.0"},
          {"reference": "aspnetcore-runtime-dbg-8.0"},
          {"reference": "aspnetcore-runtime-dbg-9.0"},
          {"reference": "aspnetcore-targeting-pack-10.0"},
          {"reference": "aspnetcore-targeting-pack-8.0"},
          {"reference": "aspnetcore-targeting-pack-9.0"},
          {"reference": "dotnet"},
          {"reference": "dotnet-apphost-pack-10.0"},
          {"reference": "dotnet-apphost-pack-8.0"},
          {"reference": "dotnet-apphost-pack-9.0"},
          {"reference": "dotnet-host"},
          {"reference": "dotnet-hostfxr-10.0"},
          {"reference": "dotnet-hostfxr-8.0"},
          {"reference": "dotnet-hostfxr-9.0"},
          {"reference": "dotnet-runtime-10.0"},
          {"reference": "dotnet-runtime-8.0"},
          {"reference": "dotnet-runtime-9.0"},
          {"reference": "dotnet-runtime-dbg-10.0"},
          {"reference": "dotnet-runtime-dbg-8.0"},
          {"reference": "dotnet-runtime-dbg-9.0"},
          {"reference": "dotnet-sdk-10.0"},
          {"reference": "dotnet-sdk-10.0-source-built-artifacts"},
          {"reference": "dotnet-sdk-8.0"},
          {"reference": "dotnet-sdk-8.0-source-built-artifacts"},
          {"reference": "dotnet-sdk-9.0"},
          {"reference": "dotnet-sdk-9.0-source-built-artifacts"},
          {"reference": "dotnet-sdk-aot-10.0"},
          {"reference": "dotnet-sdk-aot-9.0"},
          {"reference": "dotnet-sdk-dbg-10.0"},
          {"reference": "dotnet-sdk-dbg-8.0"},
          {"reference": "dotnet-sdk-dbg-9.0"},
          {"reference": "dotnet-targeting-pack-10.0"},
          {"reference": "dotnet-targeting-pack-8.0"},
          {"reference": "dotnet-targeting-pack-9.0"},
          {"reference": "dotnet-templates-10.0"},
          {"reference": "dotnet-templates-8.0"},
          {"reference": "dotnet-templates-9.0"},
          {"reference": "dotnet10.0"},
          {"reference": "dotnet8.0"},
          {"reference": "dotnet9.0"},
          {"reference": "netstandard-targeting-pack-2.1"}
        ]
      }
    ]
  }
};

var distro_constraints_values = linux_unpatched::get_distro_constraints(distro_constraints_arr:distro_constraints_array);
if (empty_or_null(distro_constraints_values)) audit(AUDIT_HOST_NOT, 'affected');

var third_party_support = get_kb_item('Host/OS/extended-third-party');
if (!empty_or_null(third_party_support)) {
    var third_party_vendors = distro_constraints_values['third_party'];
    if (!empty_or_null(third_party_vendors)) {
        var vendor;
        foreach vendor (third_party_vendors) {
            if (vendor == third_party_support) exit(0, 'A third party management patch is available for this vulnerability from ' + vendor + '.\n');
        }
    }
}

var report = linux_unpatched::check_unpatched_constraints(distro_constraints_values:distro_constraints_values);

if (!empty_or_null(report))
{
  security_report_v4(
      port       : 0,
      severity   : SECURITY_HOLE,
      extra      : report
  );
  exit(0);
}
else
{
  audit(AUDIT_HOST_NOT, 'affected');
}

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18 Jul 2026 00:00Current
5.3Medium risk
Vulners AI Score5.3
CVSS 3.18.8
EPSS0.00582
SSVC
linux systemsunpatched vulnerabilityauthentication bypassprivilege escalationno vendor patchaffected packages
6