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CVE-2026-86300 (GCVE-0-2026-86300)

Vulnerability from cvelistv5 – Published: 2026-09-07 11:30 – Updated: 2026-09-07 11:30
VLAI
Title
Tenda AC9 Web Management R7WebsSecurityHandler improper authentication
Summary
A flaw has been found in Tenda AC9 15.03.05.14. This impacts the function R7WebsSecurityHandler of the component Web Management. This manipulation causes improper authentication. The attack may be initiated remotely. The exploit has been published and may be used.
Severity
6.9 (Medium)
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P
7.3 (High)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L/E:P/RL:X/RC:R
7.3 (High)
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L/E:P/RL:X/RC:R
CWE
  • CWE-287 - Improper Authentication
Assigner
References
Impacted products
Vendor Product Version CPE status
Tenda AC9 Affected: 15.03.05.14
    cpe:2.3:o:tenda:ac9_firmware:*:*:*:*:*:*:*:*
Create a notification for this product.
Credits
sleep (VulDB User)
Show details on NVD website
To clipboard 

{
  "containers": {
    "cna": {
      "affected": [
        {
          "cpes": [
            "cpe:2.3:o:tenda:ac9_firmware:*:*:*:*:*:*:*:*"
          ],
          "modules": [
            "Web Management"
          ],
          "product": "AC9",
          "vendor": "Tenda",
          "versions": [
            {
              "status": "affected",
              "version": "15.03.05.14"
            }
          ]
        }
      ],
      "credits": [
        {
          "lang": "en",
          "type": "reporter",
          "value": "sleep (VulDB User)"
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "A flaw has been found in Tenda AC9 15.03.05.14. This impacts the function R7WebsSecurityHandler of the component Web Management. This manipulation causes improper authentication. The attack may be initiated remotely. The exploit has been published and may be used."
        }
      ],
      "metrics": [
        {
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            "baseSeverity": "MEDIUM",
            "vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P",
            "version": "4.0"
          }
        },
        {
          "cvssV3_1": {
            "baseScore": 7.3,
            "baseSeverity": "HIGH",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L/E:P/RL:X/RC:R",
            "version": "3.1"
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            "version": "2.0"
          }
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      ],
      "problemTypes": [
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          "descriptions": [
            {
              "cweId": "CWE-287",
              "description": "Improper Authentication",
              "lang": "en",
              "type": "CWE"
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      ],
      "providerMetadata": {
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        "orgId": "1af790b2-7ee1-4545-860a-a788eba489b5",
        "shortName": "VulDB"
      },
      "references": [
        {
          "name": "VDB-399464 | Tenda AC9 Web Management R7WebsSecurityHandler improper authentication",
          "tags": [
            "vdb-entry",
            "technical-description"
          ],
          "url": "https://vuldb.com/vuln/399464"
        },
        {
          "name": "VDB-399464 | CTI Indicators (IOB, IOC, IOA)",
          "tags": [
            "signature",
            "permissions-required"
          ],
          "url": "https://vuldb.com/vuln/399464/cti"
        },
        {
          "name": "CVE-2026-86300 | CVE Analysis and Report",
          "tags": [
            "third-party-advisory"
          ],
          "url": "https://vuldb.com/cve/CVE-2026-86300"
        },
        {
          "name": "Submit #906606 | Tenda AC9 V15.03.05.14 Information Disclosure",
          "tags": [
            "third-party-advisory"
          ],
          "url": "https://vuldb.com/submit/906606"
        },
        {
          "name": "Submit #906607 | Tenda AC9 V15.03.05.14_multi / V15.03.05.16_multi Improper Access Controls (Duplicate)",
          "tags": [
            "third-party-advisory"
          ],
          "url": "https://vuldb.com/submit/906607"
        },
        {
          "name": "Submit #906608 | Tenda AC9 V15.03.05.14_multi / V15.03.05.16_multi Improper Access Controls (Duplicate)",
          "tags": [
            "third-party-advisory"
          ],
          "url": "https://vuldb.com/submit/906608"
        },
        {
          "tags": [
            "related"
          ],
          "url": "https://github.com/limou89/somevul/blob/main/Tenda_AC9_getProduct_Info_Disclosure.md"
        },
        {
          "tags": [
            "exploit"
          ],
          "url": "https://github.com/limou89/somevul/blob/main/Tenda_AC9_fast_setting_wifi_set_Unauth_Password.md"
        },
        {
          "tags": [
            "product"
          ],
          "url": "https://www.tenda.com.cn/"
        }
      ],
      "timeline": [
        {
          "lang": "en",
          "time": "2026-09-06T00:00:00.000Z",
          "value": "Advisory disclosed"
        },
        {
          "lang": "en",
          "time": "2026-09-06T02:00:00.000Z",
          "value": "VulDB entry created"
        },
        {
          "lang": "en",
          "time": "2026-09-06T18:38:25.000Z",
          "value": "VulDB entry last update"
        }
      ],
      "title": "Tenda AC9 Web Management R7WebsSecurityHandler improper authentication",
      "x_generator": [
        "VulDB PVTS v202609"
      ]
    }
  },
  "cveMetadata": {
    "assignerOrgId": "1af790b2-7ee1-4545-860a-a788eba489b5",
    "assignerShortName": "VulDB",
    "cveId": "CVE-2026-86300",
    "datePublished": "2026-09-07T11:30:09.363Z",
    "dateReserved": "2026-09-06T16:33:21.215Z",
    "dateUpdated": "2026-09-07T11:30:09.363Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2",
  "vulnerability-lookup:meta": {
    "nvd": "{\"cve\":{\"id\":\"CVE-2026-86300\",\"sourceIdentifier\":\"cna@vuldb.com\",\"published\":\"2026-09-07T12:17:21.520\",\"lastModified\":\"2026-09-07T12:17:21.520\",\"vulnStatus\":\"Received\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"A flaw has been found in Tenda AC9 15.03.05.14. This impacts the function R7WebsSecurityHandler of the component Web Management. This manipulation causes improper authentication. The attack may be initiated remotely. The exploit has been published and may be used.\"}],\"affected\":[{\"source\":\"cna@vuldb.com\",\"affectedData\":[{\"vendor\":\"Tenda\",\"product\":\"AC9\",\"cpes\":[\"cpe:2.3:o:tenda:ac9_firmware:*:*:*:*:*:*:*:*\"],\"modules\":[\"Web Management\"],\"versions\":[{\"version\":\"15.03.05.14\",\"status\":\"affected\"}]}]}],\"metrics\":{\"cvssMetricV40\":[{\"source\":\"cna@vuldb.com\",\"type\":\"Secondary\",\"cvssData\":{\"version\":\"4.0\",\"vectorString\":\"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/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\",\"baseScore\":5.5,\"baseSeverity\":\"MEDIUM\",\"attackVector\":\"NETWORK\",\"attackComplexity\":\"LOW\",\"attackRequirements\":\"NONE\",\"privilegesRequired\":\"NONE\",\"userInteraction\":\"NONE\",\"vulnConfidentialityImpact\":\"LOW\",\"vulnIntegrityImpact\":\"LOW\",\"vulnAvailabilityImpact\":\"LOW\",\"subConfidentialityImpact\":\"NONE\",\"subIntegrityImpact\":\"NONE\",\"subAvailabilityImpact\":\"NONE\",\"exploitMaturity\":\"PROOF_OF_CONCEPT\",\"confidentialityRequirement\":\"NOT_DEFINED\",\"integrityRequirement\":\"NOT_DEFINED\",\"availabilityRequirement\":\"NOT_DEFINED\",\"modifiedAttackVector\":\"NOT_DEFINED\",\"modifiedAttackComplexity\":\"NOT_DEFINED\",\"modifiedAttackRequirements\":\"NOT_DEFINED\",\"modifiedPrivilegesRequired\":\"NOT_DEFINED\",\"modifiedUserInteraction\":\"NOT_DEFINED\",\"modifiedVulnConfidentialityImpact\":\"NOT_DEFINED\",\"modifiedVulnIntegrityImpact\":\"NOT_DEFINED\",\"modifiedVulnAvailabilityImpact\":\"NOT_DEFINED\",\"modifiedSubConfidentialityImpact\":\"NOT_DEFINED\",\"modifiedSubIntegrityImpact\":\"NOT_DEFINED\",\"modifiedSubAvailabilityImpact\":\"NOT_DEFINED\",\"Safety\":\"NOT_DEFINED\",\"Automatable\":\"NOT_DEFINED\",\"Recovery\":\"NOT_DEFINED\",\"valueDensity\":\"NOT_DEFINED\",\"vulnerabilityResponseEffort\":\"NOT_DEFINED\",\"providerUrgency\":\"NOT_DEFINED\"}}],\"cvssMetricV31\":[{\"source\":\"cna@vuldb.com\",\"type\":\"Primary\",\"cvssData\":{\"version\":\"3.1\",\"vectorString\":\"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L\",\"baseScore\":7.3,\"baseSeverity\":\"HIGH\",\"attackVector\":\"NETWORK\",\"attackComplexity\":\"LOW\",\"privilegesRequired\":\"NONE\",\"userInteraction\":\"NONE\",\"scope\":\"UNCHANGED\",\"confidentialityImpact\":\"LOW\",\"integrityImpact\":\"LOW\",\"availabilityImpact\":\"LOW\"},\"exploitabilityScore\":3.9,\"impactScore\":3.4}],\"cvssMetricV2\":[{\"source\":\"cna@vuldb.com\",\"type\":\"Secondary\",\"cvssData\":{\"version\":\"2.0\",\"vectorString\":\"AV:N/AC:L/Au:N/C:P/I:P/A:P\",\"baseScore\":7.5,\"accessVector\":\"NETWORK\",\"accessComplexity\":\"LOW\",\"authentication\":\"NONE\",\"confidentialityImpact\":\"PARTIAL\",\"integrityImpact\":\"PARTIAL\",\"availabilityImpact\":\"PARTIAL\"},\"baseSeverity\":\"HIGH\",\"exploitabilityScore\":10.0,\"impactScore\":6.4,\"acInsufInfo\":false,\"obtainAllPrivilege\":false,\"obtainUserPrivilege\":false,\"obtainOtherPrivilege\":false,\"userInteractionRequired\":false}]},\"weaknesses\":[{\"source\":\"cna@vuldb.com\",\"type\":\"Primary\",\"description\":[{\"lang\":\"en\",\"value\":\"CWE-287\"}]}],\"references\":[{\"url\":\"https://github.com/limou89/somevul/blob/main/Tenda_AC9_fast_setting_wifi_set_Unauth_Password.md\",\"source\":\"cna@vuldb.com\"},{\"url\":\"https://github.com/limou89/somevul/blob/main/Tenda_AC9_getProduct_Info_Disclosure.md\",\"source\":\"cna@vuldb.com\"},{\"url\":\"https://vuldb.com/cve/CVE-2026-86300\",\"source\":\"cna@vuldb.com\"},{\"url\":\"https://vuldb.com/submit/906606\",\"source\":\"cna@vuldb.com\"},{\"url\":\"https://vuldb.com/submit/906607\",\"source\":\"cna@vuldb.com\"},{\"url\":\"https://vuldb.com/submit/906608\",\"source\":\"cna@vuldb.com\"},{\"url\":\"https://vuldb.com/vuln/399464\",\"source\":\"cna@vuldb.com\"},{\"url\":\"https://vuldb.com/vuln/399464/cti\",\"source\":\"cna@vuldb.com\"},{\"url\":\"https://www.tenda.com.cn/\",\"source\":\"cna@vuldb.com\"}]}}"
  }
}



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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.

Sightings

Author Source Type Date Other

Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.


Detection rules are retrieved from Rulezet.