CVE-2026-19748 (GCVE-0-2026-19748)

Vulnerability from cvelistv5 – Published: 2026-08-13 20:15 – Updated: 2026-08-13 20:15
VLAI
Title
Tenda CH7 Kylin Web Service CWebSessionManager_ParseSession entropy
Summary
A security vulnerability has been detected in Tenda CH7, CH7G, CH10, CP3, CP3 Pro, CP7, TC3B14C, TC3B15C, TC3T14C and TC3T15C up to 20260625. Affected is the function CWebSessionManager_ParseSession of the file /user/bin/Kylin of the component Kylin Web Service. Such manipulation of the argument SESSION leads to insufficient entropy. The attack may be performed from remote. Attacks of this nature are highly complex. The exploitability is told to be difficult.
CWE
  • CWE-331 - Insufficient Entropy
  • CWE-330 - Insufficiently Random Values
Assigner
References
Impacted products
Vendor Product Version
Tenda CH7 Affected: 20260625
    cpe:2.3:h:tenda:ch7:*:*:*:*:*:*:*:*
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Tenda CH7G Affected: 20260625
    cpe:2.3:h:tenda:ch7g:*:*:*:*:*:*:*:*
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Tenda CH10 Affected: 20260625
    cpe:2.3:h:tenda:ch10:*:*:*:*:*:*:*:*
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Tenda CP3 Affected: 20260625
    cpe:2.3:h:tenda:cp3:*:*:*:*:*:*:*:*
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Tenda CP3 Pro Affected: 20260625
    cpe:2.3:h:tenda:cp3_pro:*:*:*:*:*:*:*:*
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Tenda CP7 Affected: 20260625
    cpe:2.3:h:tenda:cp7:*:*:*:*:*:*:*:*
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Tenda TC3B14C Affected: 20260625
    cpe:2.3:h:tenda:tc3b14c:*:*:*:*:*:*:*:*
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Tenda TC3B15C Affected: 20260625
    cpe:2.3:h:tenda:tc3b15c:*:*:*:*:*:*:*:*
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Tenda TC3T14C Affected: 20260625
    cpe:2.3:h:tenda:tc3t14c:*:*:*:*:*:*:*:*
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Tenda TC3T15C Affected: 20260625
    cpe:2.3:h:tenda:tc3t15c:*:*:*:*:*:*:*:*
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Show details on NVD website

{
  "containers": {
    "cna": {
      "affected": [
        {
          "cpes": [
            "cpe:2.3:h:tenda:ch7:*:*:*:*:*:*:*:*"
          ],
          "modules": [
            "Kylin Web Service"
          ],
          "product": "CH7",
          "vendor": "Tenda",
          "versions": [
            {
              "status": "affected",
              "version": "20260625"
            }
          ]
        },
        {
          "cpes": [
            "cpe:2.3:h:tenda:ch7g:*:*:*:*:*:*:*:*"
          ],
          "modules": [
            "Kylin Web Service"
          ],
          "product": "CH7G",
          "vendor": "Tenda",
          "versions": [
            {
              "status": "affected",
              "version": "20260625"
            }
          ]
        },
        {
          "cpes": [
            "cpe:2.3:h:tenda:ch10:*:*:*:*:*:*:*:*"
          ],
          "modules": [
            "Kylin Web Service"
          ],
          "product": "CH10",
          "vendor": "Tenda",
          "versions": [
            {
              "status": "affected",
              "version": "20260625"
            }
          ]
        },
        {
          "cpes": [
            "cpe:2.3:h:tenda:cp3:*:*:*:*:*:*:*:*"
          ],
          "modules": [
            "Kylin Web Service"
          ],
          "product": "CP3",
          "vendor": "Tenda",
          "versions": [
            {
              "status": "affected",
              "version": "20260625"
            }
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        },
        {
          "cpes": [
            "cpe:2.3:h:tenda:cp3_pro:*:*:*:*:*:*:*:*"
          ],
          "modules": [
            "Kylin Web Service"
          ],
          "product": "CP3 Pro",
          "vendor": "Tenda",
          "versions": [
            {
              "status": "affected",
              "version": "20260625"
            }
          ]
        },
        {
          "cpes": [
            "cpe:2.3:h:tenda:cp7:*:*:*:*:*:*:*:*"
          ],
          "modules": [
            "Kylin Web Service"
          ],
          "product": "CP7",
          "vendor": "Tenda",
          "versions": [
            {
              "status": "affected",
              "version": "20260625"
            }
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        },
        {
          "cpes": [
            "cpe:2.3:h:tenda:tc3b14c:*:*:*:*:*:*:*:*"
          ],
          "modules": [
            "Kylin Web Service"
          ],
          "product": "TC3B14C",
          "vendor": "Tenda",
          "versions": [
            {
              "status": "affected",
              "version": "20260625"
            }
          ]
        },
        {
          "cpes": [
            "cpe:2.3:h:tenda:tc3b15c:*:*:*:*:*:*:*:*"
          ],
          "modules": [
            "Kylin Web Service"
          ],
          "product": "TC3B15C",
          "vendor": "Tenda",
          "versions": [
            {
              "status": "affected",
              "version": "20260625"
            }
          ]
        },
        {
          "cpes": [
            "cpe:2.3:h:tenda:tc3t14c:*:*:*:*:*:*:*:*"
          ],
          "modules": [
            "Kylin Web Service"
          ],
          "product": "TC3T14C",
          "vendor": "Tenda",
          "versions": [
            {
              "status": "affected",
              "version": "20260625"
            }
          ]
        },
        {
          "cpes": [
            "cpe:2.3:h:tenda:tc3t15c:*:*:*:*:*:*:*:*"
          ],
          "modules": [
            "Kylin Web Service"
          ],
          "product": "TC3T15C",
          "vendor": "Tenda",
          "versions": [
            {
              "status": "affected",
              "version": "20260625"
            }
          ]
        }
      ],
      "credits": [
        {
          "lang": "en",
          "type": "reporter",
          "value": "Howitouchyou (VulDB User)"
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "A security vulnerability has been detected in Tenda CH7, CH7G, CH10, CP3, CP3 Pro, CP7, TC3B14C, TC3B15C, TC3T14C and TC3T15C up to 20260625. Affected is the function CWebSessionManager_ParseSession of the file /user/bin/Kylin of the component Kylin Web Service. Such manipulation of the argument SESSION leads to insufficient entropy. The attack may be performed from remote. Attacks of this nature are highly complex. The exploitability is told to be difficult."
        }
      ],
      "metrics": [
        {
          "cvssV4_0": {
            "baseScore": 6.3,
            "baseSeverity": "MEDIUM",
            "vectorString": "CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:P",
            "version": "4.0"
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        },
        {
          "cvssV3_1": {
            "baseScore": 3.7,
            "baseSeverity": "LOW",
            "vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N/E:P/RL:X/RC:R",
            "version": "3.1"
          }
        },
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            "baseSeverity": "LOW",
            "vectorString": "CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N/E:P/RL:X/RC:R",
            "version": "3.0"
          }
        },
        {
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            "baseScore": 2.6,
            "vectorString": "AV:N/AC:H/Au:N/C:P/I:N/A:N/E:POC/RL:ND/RC:UR",
            "version": "2.0"
          }
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-331",
              "description": "Insufficient Entropy",
              "lang": "en",
              "type": "CWE"
            }
          ]
        },
        {
          "descriptions": [
            {
              "cweId": "CWE-330",
              "description": "Insufficiently Random Values",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-08-13T20:15:10.451Z",
        "orgId": "1af790b2-7ee1-4545-860a-a788eba489b5",
        "shortName": "VulDB"
      },
      "references": [
        {
          "name": "VDB-389499 | Tenda CH7 Kylin Web Service CWebSessionManager_ParseSession entropy",
          "tags": [
            "vdb-entry",
            "technical-description"
          ],
          "url": "https://vuldb.com/vuln/389499"
        },
        {
          "name": "VDB-389499 | CTI Indicators (IOB, IOC, TTP, IOA)",
          "tags": [
            "signature",
            "permissions-required"
          ],
          "url": "https://vuldb.com/vuln/389499/cti"
        },
        {
          "name": "CVE-2026-19748 | CVE Analysis and Report",
          "tags": [
            "third-party-advisory"
          ],
          "url": "https://vuldb.com/cve/CVE-2026-19748"
        },
        {
          "name": "Submit #868490 | Tenda Tenda Multiple IP Cameras Multiple Versions Authentication Bypass",
          "tags": [
            "third-party-advisory"
          ],
          "url": "https://vuldb.com/submit/868490"
        },
        {
          "tags": [
            "related"
          ],
          "url": "https://github.com/howitouchyou/Tenda-Smart-Camera-Vulnerability/blob/main/Tenda%20Weak%20Bypass/Tenda%20Camera%20Weak%20Session%20Authentication%20Bypass.md"
        },
        {
          "tags": [
            "product"
          ],
          "url": "https://www.tenda.com.cn/"
        }
      ],
      "timeline": [
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          "lang": "en",
          "time": "2026-08-13T00:00:00.000Z",
          "value": "Advisory disclosed"
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          "lang": "en",
          "time": "2026-08-13T02:00:00.000Z",
          "value": "VulDB entry created"
        },
        {
          "lang": "en",
          "time": "2026-08-13T16:44:51.000Z",
          "value": "VulDB entry last update"
        }
      ],
      "title": "Tenda CH7 Kylin Web Service CWebSessionManager_ParseSession entropy",
      "x_generator": [
        "VulDB PVTS v202608"
      ]
    }
  },
  "cveMetadata": {
    "assignerOrgId": "1af790b2-7ee1-4545-860a-a788eba489b5",
    "assignerShortName": "VulDB",
    "cveId": "CVE-2026-19748",
    "datePublished": "2026-08-13T20:15:10.451Z",
    "dateReserved": "2026-08-13T14:39:32.611Z",
    "dateUpdated": "2026-08-13T20:15:10.451Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2",
  "vulnerability-lookup:meta": {
    "nvd": "{\"cve\":{\"id\":\"CVE-2026-19748\",\"sourceIdentifier\":\"cna@vuldb.com\",\"published\":\"2026-08-13T21:17:46.343\",\"lastModified\":\"2026-08-13T21:17:46.343\",\"vulnStatus\":\"Received\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"A security vulnerability has been detected in Tenda CH7, CH7G, CH10, CP3, CP3 Pro, CP7, TC3B14C, TC3B15C, TC3T14C and TC3T15C up to 20260625. Affected is the function CWebSessionManager_ParseSession of the file /user/bin/Kylin of the component Kylin Web Service. Such manipulation of the argument SESSION leads to insufficient entropy. The attack may be performed from remote. Attacks of this nature are highly complex. The exploitability is told to be difficult.\"}],\"affected\":[{\"source\":\"cna@vuldb.com\",\"affectedData\":[{\"vendor\":\"Tenda\",\"product\":\"CH7\",\"cpes\":[\"cpe:2.3:h:tenda:ch7:*:*:*:*:*:*:*:*\"],\"modules\":[\"Kylin Web Service\"],\"versions\":[{\"version\":\"20260625\",\"status\":\"affected\"}]},{\"vendor\":\"Tenda\",\"product\":\"CH7G\",\"cpes\":[\"cpe:2.3:h:tenda:ch7g:*:*:*:*:*:*:*:*\"],\"modules\":[\"Kylin Web Service\"],\"versions\":[{\"version\":\"20260625\",\"status\":\"affected\"}]},{\"vendor\":\"Tenda\",\"product\":\"CH10\",\"cpes\":[\"cpe:2.3:h:tenda:ch10:*:*:*:*:*:*:*:*\"],\"modules\":[\"Kylin Web Service\"],\"versions\":[{\"version\":\"20260625\",\"status\":\"affected\"}]},{\"vendor\":\"Tenda\",\"product\":\"CP3\",\"cpes\":[\"cpe:2.3:h:tenda:cp3:*:*:*:*:*:*:*:*\"],\"modules\":[\"Kylin Web Service\"],\"versions\":[{\"version\":\"20260625\",\"status\":\"affected\"}]},{\"vendor\":\"Tenda\",\"product\":\"CP3 Pro\",\"cpes\":[\"cpe:2.3:h:tenda:cp3_pro:*:*:*:*:*:*:*:*\"],\"modules\":[\"Kylin Web Service\"],\"versions\":[{\"version\":\"20260625\",\"status\":\"affected\"}]},{\"vendor\":\"Tenda\",\"product\":\"CP7\",\"cpes\":[\"cpe:2.3:h:tenda:cp7:*:*:*:*:*:*:*:*\"],\"modules\":[\"Kylin Web Service\"],\"versions\":[{\"version\":\"20260625\",\"status\":\"affected\"}]},{\"vendor\":\"Tenda\",\"product\":\"TC3B14C\",\"cpes\":[\"cpe:2.3:h:tenda:tc3b14c:*:*:*:*:*:*:*:*\"],\"modules\":[\"Kylin Web Service\"],\"versions\":[{\"version\":\"20260625\",\"status\":\"affected\"}]},{\"vendor\":\"Tenda\",\"product\":\"TC3B15C\",\"cpes\":[\"cpe:2.3:h:tenda:tc3b15c:*:*:*:*:*:*:*:*\"],\"modules\":[\"Kylin Web Service\"],\"versions\":[{\"version\":\"20260625\",\"status\":\"affected\"}]},{\"vendor\":\"Tenda\",\"product\":\"TC3T14C\",\"cpes\":[\"cpe:2.3:h:tenda:tc3t14c:*:*:*:*:*:*:*:*\"],\"modules\":[\"Kylin Web Service\"],\"versions\":[{\"version\":\"20260625\",\"status\":\"affected\"}]},{\"vendor\":\"Tenda\",\"product\":\"TC3T15C\",\"cpes\":[\"cpe:2.3:h:tenda:tc3t15c:*:*:*:*:*:*:*:*\"],\"modules\":[\"Kylin Web Service\"],\"versions\":[{\"version\":\"20260625\",\"status\":\"affected\"}]}]}],\"metrics\":{\"cvssMetricV40\":[{\"source\":\"cna@vuldb.com\",\"type\":\"Secondary\",\"cvssData\":{\"version\":\"4.0\",\"vectorString\":\"CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/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\":2.9,\"baseSeverity\":\"LOW\",\"attackVector\":\"NETWORK\",\"attackComplexity\":\"HIGH\",\"attackRequirements\":\"NONE\",\"privilegesRequired\":\"NONE\",\"userInteraction\":\"NONE\",\"vulnConfidentialityImpact\":\"LOW\",\"vulnIntegrityImpact\":\"NONE\",\"vulnAvailabilityImpact\":\"NONE\",\"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:H/PR:N/UI:N/S:U/C:L/I:N/A:N\",\"baseScore\":3.7,\"baseSeverity\":\"LOW\",\"attackVector\":\"NETWORK\",\"attackComplexity\":\"HIGH\",\"privilegesRequired\":\"NONE\",\"userInteraction\":\"NONE\",\"scope\":\"UNCHANGED\",\"confidentialityImpact\":\"LOW\",\"integrityImpact\":\"NONE\",\"availabilityImpact\":\"NONE\"},\"exploitabilityScore\":2.2,\"impactScore\":1.4}],\"cvssMetricV2\":[{\"source\":\"cna@vuldb.com\",\"type\":\"Secondary\",\"cvssData\":{\"version\":\"2.0\",\"vectorString\":\"AV:N/AC:H/Au:N/C:P/I:N/A:N\",\"baseScore\":2.6,\"accessVector\":\"NETWORK\",\"accessComplexity\":\"HIGH\",\"authentication\":\"NONE\",\"confidentialityImpact\":\"PARTIAL\",\"integrityImpact\":\"NONE\",\"availabilityImpact\":\"NONE\"},\"baseSeverity\":\"LOW\",\"exploitabilityScore\":4.9,\"impactScore\":2.9,\"acInsufInfo\":false,\"obtainAllPrivilege\":false,\"obtainUserPrivilege\":false,\"obtainOtherPrivilege\":false,\"userInteractionRequired\":false}]},\"weaknesses\":[{\"source\":\"cna@vuldb.com\",\"type\":\"Primary\",\"description\":[{\"lang\":\"en\",\"value\":\"CWE-330\"},{\"lang\":\"en\",\"value\":\"CWE-331\"}]}],\"references\":[{\"url\":\"https://github.com/howitouchyou/Tenda-Smart-Camera-Vulnerability/blob/main/Tenda%20Weak%20Bypass/Tenda%20Camera%20Weak%20Session%20Authentication%20Bypass.md\",\"source\":\"cna@vuldb.com\"},{\"url\":\"https://vuldb.com/cve/CVE-2026-19748\",\"source\":\"cna@vuldb.com\"},{\"url\":\"https://vuldb.com/submit/868490\",\"source\":\"cna@vuldb.com\"},{\"url\":\"https://vuldb.com/vuln/389499\",\"source\":\"cna@vuldb.com\"},{\"url\":\"https://vuldb.com/vuln/389499/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.

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Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
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