Vulnerability-Lookup

GHSA-WG9W-9V33-74XX

Vulnerability from github – Published: 2026-08-29 00:31 – Updated: 2026-08-29 00:31

Details

Successful exploitation may result in a denial-of-service condition affecting UPnP discovery, state query, or related management functionality until the affected process is restarted or the device is rebooted.

Severity

5.3 (Medium)


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

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{
  "affected": [],
  "aliases": [
    "CVE-2026-76650"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-476"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-08-28T22:16:53Z",
    "severity": "MODERATE"
  },
  "details": "A NULL\npointer dereference vulnerability exists in\u00a0TL-WR841N v14\u00a0in\u00a0the UPnP service when processing\nSOAP state variable query requests. A specially crafted SOAP query may trigger\nunexpected termination or instability of the process hosting the UPnP service.\n\n\n\n\n\nSuccessful\nexploitation may result in a denial-of-service condition affecting UPnP\ndiscovery, state query, or related management functionality until the affected\nprocess is restarted or the device is rebooted.",
  "id": "GHSA-wg9w-9v33-74xx",
  "modified": "2026-08-29T00:31:03Z",
  "published": "2026-08-29T00:31:03Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-76650"
    },
    {
      "type": "WEB",
      "url": "https://www.tp-link.com/en/support/download/tl-wr841n/v14/#Firmware"
    },
    {
      "type": "WEB",
      "url": "https://www.tp-link.com/us/support/download/tl-wr841n/v14/#Firmware"
    },
    {
      "type": "WEB",
      "url": "https://www.tp-link.com/us/support/faq/5270"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/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-2026-76650 (GCVE-0-2026-76650)

Vulnerability from cvelistv5 – Published: 2026-08-28 20:19 – Updated: 2026-08-31 18:37

Title

Pre-Authentication NULL Pointer Dereference in UPnP SOAP State Variable Query Processing in TP-Link TL-WR841N

Summary

A NULL pointer dereference vulnerability exists in TL-WR841N v14 in the UPnP service when processing SOAP state variable query requests. A specially crafted SOAP query may trigger unexpected termination or instability of the process hosting the UPnP service. Successful exploitation may result in a denial-of-service condition affecting UPnP discovery, state query, or related management functionality until the affected process is restarted or the device is rebooted.

Severity

5.3 (Medium)


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

SSVC

Exploitation: none Automatable: no Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-08-31 18:36 UTC

CWE

CWE-476 - NULL pointer dereference

Assigner

TPLink mitre root

References

3 references

URL	Tags
https://www.tp-link.com/us/support/download/tl-wr…	patch
https://www.tp-link.com/en/support/download/tl-wr…	patch
https://www.tp-link.com/us/support/faq/5270/	vendor-advisory

Impacted products

1 product

Vendor	Product	Version
TP-Link System Inc.	TL-WR841N v14	Affected: 0 , < TL-WR841N(US)_V14_4.19 Build 260820 Rel.33478 (custom) Affected: 0 , < TL-WR841N(EU)_V14_4.19 Build 260821 Rel.56588 (custom)

Credits

Jincheng Wang (@winmt) from Nanjing University of Posts and Telecommunications

Show details on NVD website

JSON

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{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2026-76650",
                "options": [
                  {
                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2026-08-31T18:36:59.443811Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2026-08-31T18:37:11.079Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "TL-WR841N v14",
          "vendor": "TP-Link System Inc.",
          "versions": [
            {
              "lessThan": "TL-WR841N(US)_V14_4.19 Build 260820 Rel.33478",
              "status": "affected",
              "version": "0",
              "versionType": "custom"
            },
            {
              "lessThan": "TL-WR841N(EU)_V14_4.19 Build 260821 Rel.56588",
              "status": "affected",
              "version": "0",
              "versionType": "custom"
            }
          ]
        }
      ],
      "credits": [
        {
          "lang": "en",
          "type": "finder",
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        }
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      "descriptions": [
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              "type": "text/html",
              "value": "\u003cp\u003e\u003cspan\u003eA NULL\npointer dereference vulnerability exists in\u0026nbsp;\u003c/span\u003e\u003cspan\u003eTL-WR841N v14\u003c/span\u003e\u003cspan\u003e\u0026nbsp;in\u003c/span\u003e\u003cspan\u003e\u0026nbsp;the UPnP service when processing\nSOAP state variable query requests. A specially crafted SOAP query may trigger\nunexpected termination or instability of the process hosting the UPnP service.\u003c/span\u003e\u003c/p\u003e\u003cdiv\u003e\n\n\u003cp\u003eSuccessful\nexploitation may result in a denial-of-service condition affecting UPnP\ndiscovery, state query, or related management functionality until the affected\nprocess is restarted or the device is rebooted.\u003c/p\u003e\u003c/div\u003e"
            }
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        }
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      "impacts": [
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              "lang": "en",
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      "metrics": [
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            "Recovery": "NOT_DEFINED",
            "Safety": "NOT_DEFINED",
            "attackComplexity": "LOW",
            "attackRequirements": "NONE",
            "attackVector": "ADJACENT",
            "baseScore": 5.3,
            "baseSeverity": "MEDIUM",
            "exploitMaturity": "NOT_DEFINED",
            "privilegesRequired": "NONE",
            "providerUrgency": "NOT_DEFINED",
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            "subConfidentialityImpact": "NONE",
            "subIntegrityImpact": "NONE",
            "userInteraction": "NONE",
            "valueDensity": "NOT_DEFINED",
            "vectorString": "CVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N",
            "version": "4.0",
            "vulnAvailabilityImpact": "LOW",
            "vulnConfidentialityImpact": "NONE",
            "vulnIntegrityImpact": "NONE",
            "vulnerabilityResponseEffort": "NOT_DEFINED"
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          "scenarios": [
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      "problemTypes": [
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      "providerMetadata": {
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          "url": "https://www.tp-link.com/en/support/download/tl-wr841n/v14/#Firmware"
        },
        {
          "tags": [
            "vendor-advisory"
          ],
          "url": "https://www.tp-link.com/us/support/faq/5270/"
        }
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    "assignerShortName": "TPLink",
    "cveId": "CVE-2026-76650",
    "datePublished": "2026-08-28T20:19:03.475Z",
    "dateReserved": "2026-08-19T15:49:30.548Z",
    "dateUpdated": "2026-08-31T18:37:11.079Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}

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-WG9W-9V33-74XX

CVE-2026-76650 (GCVE-0-2026-76650)

Tags

Sightings

Nomenclature