FKIE_CVE-2026-4253

Vulnerability from fkie_nvd - Published: 2026-03-16 18:16 - Updated: 2026-04-29 01:00
Severity ?
4.7 (Medium) - CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:L/I:L/A:L
7.2 (High) - CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
Summary
A security flaw has been discovered in Tenda AC8 16.03.50.11. This affects the function route_set_user_policy_rule of the file /cgi-bin/UploadCfg of the component Web Interface. The manipulation of the argument wans.policy.list1 results in os command injection. It is possible to launch the attack remotely. The exploit has been released to the public and may be used for attacks.
References
cna@vuldb.comhttps://github.com/digitalandrew/tenda_ac8_v5/blob/main/poc_cmdi_config_upload.pyExploit
cna@vuldb.comhttps://vuldb.com/?ctiid.351211Permissions Required, VDB Entry
cna@vuldb.comhttps://vuldb.com/?id.351211Third Party Advisory, VDB Entry
cna@vuldb.comhttps://vuldb.com/?submit.771771Exploit, Third Party Advisory, VDB Entry
cna@vuldb.comhttps://www.tenda.com.cn/Product
Impacted products
Vendor Product Version
tenda ac8_firmware 16.03.50.11
tenda ac8 5.0
To clipboard 

{
  "configurations": [
    {
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              "criteria": "cpe:2.3:o:tenda:ac8_firmware:16.03.50.11:*:*:*:*:*:*:*",
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  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "A security flaw has been discovered in Tenda AC8 16.03.50.11. This affects the function route_set_user_policy_rule of the file /cgi-bin/UploadCfg of the component Web Interface. The manipulation of the argument wans.policy.list1 results in os command injection. It is possible to launch the attack remotely. The exploit has been released to the public and may be used for attacks."
    },
    {
      "lang": "es",
      "value": "Se ha descubierto una falla de seguridad en Tenda AC8 16.03.50.11. Esto afecta a la funci\u00f3n route_set_user_policy_rule del archivo /cgi-bin/UploadCfg del componente Interfaz Web. La manipulaci\u00f3n del argumento wans.policy.list1 resulta en inyecci\u00f3n de comandos del sistema operativo. Es posible lanzar el ataque de forma remota. El exploit ha sido publicado y puede ser utilizado para ataques."
    }
  ],
  "id": "CVE-2026-4253",
  "lastModified": "2026-04-29T01:00:01.613",
  "metrics": {
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      {
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        "baseSeverity": "MEDIUM",
        "cvssData": {
          "accessComplexity": "LOW",
          "accessVector": "NETWORK",
          "authentication": "MULTIPLE",
          "availabilityImpact": "PARTIAL",
          "baseScore": 5.8,
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          "integrityImpact": "PARTIAL",
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          "version": "2.0"
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        "obtainAllPrivilege": false,
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        "type": "Secondary",
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          "Recovery": "NOT_DEFINED",
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          "exploitMaturity": "PROOF_OF_CONCEPT",
          "integrityRequirement": "NOT_DEFINED",
          "modifiedAttackComplexity": "NOT_DEFINED",
          "modifiedAttackRequirements": "NOT_DEFINED",
          "modifiedAttackVector": "NOT_DEFINED",
          "modifiedPrivilegesRequired": "NOT_DEFINED",
          "modifiedSubAvailabilityImpact": "NOT_DEFINED",
          "modifiedSubConfidentialityImpact": "NOT_DEFINED",
          "modifiedSubIntegrityImpact": "NOT_DEFINED",
          "modifiedUserInteraction": "NOT_DEFINED",
          "modifiedVulnAvailabilityImpact": "NOT_DEFINED",
          "modifiedVulnConfidentialityImpact": "NOT_DEFINED",
          "modifiedVulnIntegrityImpact": "NOT_DEFINED",
          "privilegesRequired": "HIGH",
          "providerUrgency": "NOT_DEFINED",
          "subAvailabilityImpact": "NONE",
          "subConfidentialityImpact": "NONE",
          "subIntegrityImpact": "NONE",
          "userInteraction": "NONE",
          "valueDensity": "NOT_DEFINED",
          "vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X",
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          "vulnerabilityResponseEffort": "NOT_DEFINED"
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  "published": "2026-03-16T18:16:10.540",
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      "tags": [
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      "url": "https://github.com/digitalandrew/tenda_ac8_v5/blob/main/poc_cmdi_config_upload.py"
    },
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      "url": "https://www.tenda.com.cn/"
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  "vulnStatus": "Analyzed",
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}


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Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

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Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
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