Vulnerability-Lookup

GHSA-4J6V-4J5M-VGPQ

Vulnerability from github – Published: 2026-07-29 21:30 – Updated: 2026-07-29 21:30

Details

Successful exploitation of this vulnerability may result in a denial-of-service (DoS) condition or allow remote code execution (RCE), potentially leading to full compromise of the device. This vulnerability can be exploited by an unauthenticated attacker under the device's default configuration.

Severity

8.7 (High)


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

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{
  "affected": [],
  "aliases": [
    "CVE-2026-12935"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-121"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-07-29T19:16:44Z",
    "severity": "HIGH"
  },
  "details": "The\nTL-WR940N v6 router contains a vulnerability in its RTSP connection tracking\nmodule that can lead to a stack-based buffer overflow. The issue occurs when a\nLAN client initiates a connection to a malicious RTSP server controlled by an\nattacker. A specially crafted RTSP message may trigger improper memory handling\nwithin the kernel module\n\n\n\n\n\n\n\n\n\nSuccessful\nexploitation of this vulnerability may result in a denial-of-service (DoS)\ncondition or allow remote code execution (RCE), potentially leading to full\ncompromise of the device. This vulnerability can be exploited by an\nunauthenticated attacker under the device\u0027s default configuration.",
  "id": "GHSA-4j6v-4j5m-vgpq",
  "modified": "2026-07-29T21:30:59Z",
  "published": "2026-07-29T21:30:59Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-12935"
    },
    {
      "type": "WEB",
      "url": "https://www.tp-link.com/en/support/download/tl-wr940n/v6/#Firmware"
    },
    {
      "type": "WEB",
      "url": "https://www.tp-link.com/jp/support/download/tl-wr940n/v6/#Firmware"
    },
    {
      "type": "WEB",
      "url": "https://www.tp-link.com/us/support/download/tl-wr940n/v6/#Firmware"
    },
    {
      "type": "WEB",
      "url": "https://www.tp-link.com/us/support/faq/5213"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/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-2026-12935 (GCVE-0-2026-12935)

Vulnerability from cvelistv5 – Published: 2026-07-29 18:20 – Updated: 2026-07-30 03:55

Title

Unauthenticated Remote Code Execution in TP-Link TL-WR940N RTSP Conntrack Feature

Summary

The TL-WR940N v6 router contains a vulnerability in its RTSP connection tracking module that can lead to a stack-based buffer overflow. The issue occurs when a LAN client initiates a connection to a malicious RTSP server controlled by an attacker. A specially crafted RTSP message may trigger improper memory handling within the kernel module Successful exploitation of this vulnerability may result in a denial-of-service (DoS) condition or allow remote code execution (RCE), potentially leading to full compromise of the device. This vulnerability can be exploited by an unauthenticated attacker under the device's default configuration.

Severity

8.7 (High)


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

SSVC

Exploitation: none Automatable: no Technical Impact: total

CISA Coordinator (v2.0.3)

CWE

CWE-121 - Stack-based buffer overflow

Assigner

TPLink

References

4 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/jp/support/download/tl-wr…	patch
https://www.tp-link.com/us/support/faq/5213/	vendor-advisory

Impacted products

1 product

Vendor	Product	Version
TP-Link Systems Inc.	TL-WR940N v6	Affected: 0 , < (US)_V6_260528 (custom) Affected: 0 , < (JP)_V6_260527 (custom) Affected: 0 , < (EU)_V6_260528 (custom)

Credits

Ryo Shimada, University of Tsukuba; Powder Keg Technologies, Inc.

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JSON

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{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2026-12935",
                "options": [
                  {
                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "total"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2026-07-29T00:00:00+00:00",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2026-07-30T03:55:40.565Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "TL-WR940N v6",
          "vendor": "TP-Link Systems Inc.",
          "versions": [
            {
              "lessThan": "(US)_V6_260528",
              "status": "affected",
              "version": "0",
              "versionType": "custom"
            },
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              "lessThan": "(JP)_V6_260527",
              "status": "affected",
              "version": "0",
              "versionType": "custom"
            },
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              "lessThan": "(EU)_V6_260528",
              "status": "affected",
              "version": "0",
              "versionType": "custom"
            }
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      "credits": [
        {
          "lang": "en",
          "type": "finder",
          "value": "Ryo Shimada, University of Tsukuba; Powder Keg Technologies, Inc."
        }
      ],
      "descriptions": [
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              "type": "text/html",
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      "impacts": [
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          "capecId": "CAPEC-100",
          "descriptions": [
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      "metrics": [
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            "Recovery": "NOT_DEFINED",
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            "attackComplexity": "LOW",
            "attackRequirements": "NONE",
            "attackVector": "NETWORK",
            "baseScore": 8.7,
            "baseSeverity": "HIGH",
            "exploitMaturity": "NOT_DEFINED",
            "privilegesRequired": "NONE",
            "providerUrgency": "NOT_DEFINED",
            "subAvailabilityImpact": "NONE",
            "subConfidentialityImpact": "NONE",
            "subIntegrityImpact": "NONE",
            "userInteraction": "PASSIVE",
            "valueDensity": "NOT_DEFINED",
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            "vulnerabilityResponseEffort": "NOT_DEFINED"
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          "format": "CVSS",
          "scenarios": [
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              "value": "GENERAL"
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      "providerMetadata": {
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        "orgId": "f23511db-6c3e-4e32-a477-6aa17d310630",
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      "references": [
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          "tags": [
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          "url": "https://www.tp-link.com/us/support/download/tl-wr940n/v6/#Firmware"
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          "url": "https://www.tp-link.com/en/support/download/tl-wr940n/v6/#Firmware"
        },
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          "url": "https://www.tp-link.com/jp/support/download/tl-wr940n/v6/#Firmware"
        },
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          "url": "https://www.tp-link.com/us/support/faq/5213/"
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    "assignerShortName": "TPLink",
    "cveId": "CVE-2026-12935",
    "datePublished": "2026-07-29T18:20:06.417Z",
    "dateReserved": "2026-06-22T18:48:17.939Z",
    "dateUpdated": "2026-07-30T03:55:40.565Z",
    "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.

Action not permitted

GHSA-4J6V-4J5M-VGPQ

CVE-2026-12935 (GCVE-0-2026-12935)

Tags

Sightings

Nomenclature