Vulnerability-Lookup

GHSA-XW5G-644P-8357

Vulnerability from github – Published: 2026-08-19 00:31 – Updated: 2026-08-19 00:31

Details

Successful exploitation may allow an attacker to subsequently execute privileged management actions, enable unauthorized administrative access and temporary disruption of device services, resulting in a denial-of-service (DoS) condition.

Severity

8.7 (High)


                  
                    CVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N

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{
  "affected": [],
  "aliases": [
    "CVE-2026-15315"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-287"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-08-18T22:16:49Z",
    "severity": "HIGH"
  },
  "details": "Tapo C200 v5\ncontains an improper authentication vulnerability within the login\nauthentication verification module. An attacker on the local network can\nexploit weaknesses in challenge parameter validation to bypass normal\nauthentication controls and obtain administrative session tokens. \n\n\n\n\n\n\n\n\n\nSuccessful\nexploitation may allow an attacker to subsequently execute privileged\nmanagement actions, enable unauthorized administrative access and temporary\ndisruption of device services, resulting in a denial-of-service (DoS)\ncondition.",
  "id": "GHSA-xw5g-644p-8357",
  "modified": "2026-08-19T00:31:09Z",
  "published": "2026-08-19T00:31:09Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-15315"
    },
    {
      "type": "WEB",
      "url": "https://www.tp-link.com/en/support/download/tapo-c200/v5"
    },
    {
      "type": "WEB",
      "url": "https://www.tp-link.com/us/support/download/tapo-c200/v5"
    },
    {
      "type": "WEB",
      "url": "https://www.tp-link.com/us/support/faq/5248"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/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",
      "type": "CVSS_V4"
    }
  ]
}

CVE-2026-15315 (GCVE-0-2026-15315)

Vulnerability from cvelistv5 – Published: 2026-08-18 21:24 – Updated: 2026-08-20 15:36

Title

Unauthenticated Administrative Authentication Bypass via device_confirm Replay in TP-Link Tapo C200

Summary

Tapo C200 v5 contains an improper authentication vulnerability within the login authentication verification module. An attacker on the local network can exploit weaknesses in challenge parameter validation to bypass normal authentication controls and obtain administrative session tokens. Successful exploitation may allow an attacker to subsequently execute privileged management actions, enable unauthorized administrative access and temporary disruption of device services, resulting in a denial-of-service (DoS) condition.

Severity

8.7 (High)


                        
                          CVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N

SSVC

Exploitation: none Automatable: no Technical Impact: total

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-08-20 13:31 UTC

CWE

CWE-287 - Improper Authentication

Assigner

TPLink mitre root

References

3 references

URL	Tags
https://www.tp-link.com/us/support/download/tapo-…	patch
https://www.tp-link.com/en/support/download/tapo-…	patch
https://www.tp-link.com/us/support/faq/5248/	vendor-advisory

Impacted products

1 product

Vendor	Product	Version
TP-Link Systems Inc.	Tapo C200 v5	Affected: 0 , < V5_1.4.6 Build 260709 Rel.27675n (custom)

Credits

Thai Do (Lio) and Khoi Tran (KayTii) from OPSWAT

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JSON

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{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2026-15315",
                "options": [
                  {
                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "total"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2026-08-20T13:31:33.290986Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2026-08-20T15:36:48.560Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Tapo C200 v5",
          "vendor": "TP-Link Systems Inc.",
          "versions": [
            {
              "lessThan": "V5_1.4.6 Build 260709 Rel.27675n",
              "status": "affected",
              "version": "0",
              "versionType": "custom"
            }
          ]
        }
      ],
      "credits": [
        {
          "lang": "en",
          "type": "finder",
          "value": "Thai Do (Lio) and Khoi Tran (KayTii) from OPSWAT"
        }
      ],
      "descriptions": [
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          "lang": "en",
          "supportingMedia": [
            {
              "base64": false,
              "type": "text/html",
              "value": "\u003cp\u003eTapo C200 v5\ncontains an improper authentication vulnerability within the login\nauthentication verification module. An attacker on the local network can\nexploit weaknesses in challenge parameter validation to bypass normal\nauthentication controls and obtain administrative session tokens. \u003c/p\u003e\u003cp\u003e\n\n\u003c/p\u003e\u003cp\u003eSuccessful\nexploitation may allow an attacker to subsequently execute privileged\nmanagement actions, enable unauthorized administrative access and temporary\ndisruption of device services, resulting in a denial-of-service (DoS)\ncondition.\u003c/p\u003e"
            }
          ],
          "value": "Tapo C200 v5\ncontains an improper authentication vulnerability within the login\nauthentication verification module. An attacker on the local network can\nexploit weaknesses in challenge parameter validation to bypass normal\nauthentication controls and obtain administrative session tokens. \n\n\n\n\n\n\n\n\n\nSuccessful\nexploitation may allow an attacker to subsequently execute privileged\nmanagement actions, enable unauthorized administrative access and temporary\ndisruption of device services, resulting in a denial-of-service (DoS)\ncondition."
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      "impacts": [
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          "descriptions": [
            {
              "lang": "en",
              "value": "CAPEC-115 Authentication Bypass"
            }
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      ],
      "metrics": [
        {
          "cvssV4_0": {
            "Automatable": "NOT_DEFINED",
            "Recovery": "NOT_DEFINED",
            "Safety": "NOT_DEFINED",
            "attackComplexity": "LOW",
            "attackRequirements": "NONE",
            "attackVector": "ADJACENT",
            "baseScore": 8.7,
            "baseSeverity": "HIGH",
            "exploitMaturity": "NOT_DEFINED",
            "privilegesRequired": "NONE",
            "providerUrgency": "NOT_DEFINED",
            "subAvailabilityImpact": "NONE",
            "subConfidentialityImpact": "NONE",
            "subIntegrityImpact": "NONE",
            "userInteraction": "NONE",
            "valueDensity": "NOT_DEFINED",
            "vectorString": "CVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N",
            "version": "4.0",
            "vulnAvailabilityImpact": "HIGH",
            "vulnConfidentialityImpact": "HIGH",
            "vulnIntegrityImpact": "HIGH",
            "vulnerabilityResponseEffort": "NOT_DEFINED"
          },
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          "scenarios": [
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              "lang": "en",
              "value": "GENERAL"
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      "problemTypes": [
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      "providerMetadata": {
        "dateUpdated": "2026-08-18T21:24:59.428Z",
        "orgId": "f23511db-6c3e-4e32-a477-6aa17d310630",
        "shortName": "TPLink"
      },
      "references": [
        {
          "tags": [
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          "url": "https://www.tp-link.com/us/support/download/tapo-c200/v5/"
        },
        {
          "tags": [
            "patch"
          ],
          "url": "https://www.tp-link.com/en/support/download/tapo-c200/v5/"
        },
        {
          "tags": [
            "vendor-advisory"
          ],
          "url": "https://www.tp-link.com/us/support/faq/5248/"
        }
      ],
      "source": {
        "discovery": "UNKNOWN"
      },
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    "cveId": "CVE-2026-15315",
    "datePublished": "2026-08-18T21:24:59.428Z",
    "dateReserved": "2026-07-09T17:55:09.825Z",
    "dateUpdated": "2026-08-20T15:36:48.560Z",
    "state": "PUBLISHED"
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}

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.

The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base model, served locally by ML-Gateway. They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.

Action not permitted

GHSA-XW5G-644P-8357

CVE-2026-15315 (GCVE-0-2026-15315)

Tags

Sightings

Nomenclature