TOTOLINK A950RG Cloud Upgrade upgrade.so setCloudUpgradeFW command injection

{
  "id": "8309b22afcf65110452cf444e2e790ebbba45337fec5009a30f5e01fa79f8d68",
  "url": "https://www.cve.org/CVERecord?id=CVE-2026-116504",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "TOTOLINK A950RG Cloud Upgrade upgrade.so setCloudUpgradeFW command injection",
    "summary": "A vulnerability has been found in TOTOLINK A950RG 4.1.2cu.5268_B20221104. This affects the function setCloudUpgradeFW of the file lib/cste_modules/upgrade.so of the component Cloud Upgrade. The manipulation of the argument FileName leads to command injection. The attack can be initiated remotely. The exploit has been disclosed to the public and may be used.",
    "evidence": "cve:CVE-2026-116504",
    "products": [
      {
        "name": {
          "value": "A950RG",
          "evidence": "/containers/cna/affected/0/product"
        },
        "prerequisites": [],
        "fixed_versions": [],
        "affected_versions": []
      }
    ],
    "severity": "critical",
    "structured": {
      "id": "CVE-2026-116504",
      "aliases": [
        "CVE-2026-116504"
      ],
      "metrics": [
        {
          "cvssV4_0": {
            "version": "4.0",
            "baseScore": 9.4,
            "baseSeverity": "CRITICAL",
            "vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H/E:P"
          }
        },
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          "cvssV3_1": {
            "version": "3.1",
            "baseScore": 9.9,
            "baseSeverity": "CRITICAL",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H/E:P/RL:X/RC:R"
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          "cvssV2_0": {
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            "baseScore": 9,
            "vectorString": "AV:N/AC:L/Au:S/C:C/I:C/A:C/E:POC/RL:ND/RC:UR"
          }
        }
      ],
      "affected": [
        {
          "cpes": [
            "cpe:2.3:o:totolink:a950rg_firmware:*:*:*:*:*:*:*:*"
          ],
          "vendor": "TOTOLINK",
          "modules": [
            "Cloud Upgrade"
          ],
          "product": "A950RG",
          "versions": [
            {
              "status": "affected",
              "version": "4.1.2cu.5268_B20221104"
            }
          ]
        }
      ],
      "modified": "2026-10-27T14:18:09.375Z",
      "provider": "cve",
      "references": [
        "https://vuldb.com/vuln/426402",
        "https://vuldb.com/vuln/426402/cti",
        "https://vuldb.com/cve/CVE-2026-116504",
        "https://vuldb.com/submit/1022553",
        "https://gist.github.com/H3rmesk1t/c2f2dcfdb6238a7ddb8fb0622ad52948",
        "https://www.totolink.net/"
      ],
      "provider_metadata": {
        "adp": [
          {
            "title": "CISA ADP Vulnrichment",
            "metrics": [
              {
                "other": {
                  "type": "ssvc",
                  "content": {
                    "id": "CVE-2026-116504",
                    "role": "CISA Coordinator",
                    "options": [
                      {
                        "Exploitation": "poc"
                      },
                      {
                        "Automatable": "no"
                      },
                      {
                        "Technical Impact": "total"
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                    ],
                    "version": "2.0.3",
                    "timestamp": "2026-10-27T14:06:36.678372Z"
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            "providerMetadata": {
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              "shortName": "CISA-ADP",
              "dateUpdated": "2026-10-27T14:18:09.375Z"
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        "cna": {
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          "shortName": "VulDB",
          "dateUpdated": "2026-10-26T20:30:16.475Z"
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    "related_cves": [
      {
        "value": "CVE-2026-116504",
        "evidence": "/cveMetadata/cveId"
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    ],
    "security_relevant": true,
    "severity_evidence": "/containers/cna/metrics"
  },
  "source_id": "core-cve",
  "document_id": 392642,
  "published_at": "2026-10-26T20:30:16.475+00:00"
}