Vulnerability-Lookup

GHSA-WWW9-662G-PFFV

Vulnerability from github – Published: 2026-08-10 21:32 – Updated: 2026-08-10 21:32

Details

A Zip Slip vulnerability in the WebUI ISP Upgrade functionality allows arbitrary file write via a crafted archive containing directory traversal sequences. An authenticated administrator may overwrite arbitrary files on the system.Successful exploitation may allow arbitrary file to overwrite on the underlying system, affecting system integrity and availability.

Severity

6.9 (Medium)


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

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JSON

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{
  "affected": [],
  "aliases": [
    "CVE-2026-12339"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-22"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-08-10T19:17:28Z",
    "severity": "MODERATE"
  },
  "details": "A Zip Slip vulnerability in the WebUI ISP\nUpgrade functionality allows arbitrary file write via a crafted archive\ncontaining directory traversal sequences. An authenticated administrator may\noverwrite arbitrary files on the system.Successful\nexploitation may allow arbitrary file to overwrite on the underlying system, affecting system integrity and availability.",
  "id": "GHSA-www9-662g-pffv",
  "modified": "2026-08-10T21:32:03Z",
  "published": "2026-08-10T21:32:02Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-12339"
    },
    {
      "type": "WEB",
      "url": "https://www.tp-link.com/en/support/download/archer-mr200/v7/#Firmware"
    },
    {
      "type": "WEB",
      "url": "https://www.tp-link.com/en/support/download/archer-mr600/v2/#Firmware"
    },
    {
      "type": "WEB",
      "url": "https://www.tp-link.com/en/support/download/tl-mr6400/v5.30/#Firmware"
    },
    {
      "type": "WEB",
      "url": "https://www.tp-link.com/en/support/faq/5237"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:4.0/AV:A/AC:L/AT:N/PR:H/UI:N/VC:N/VI:H/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-2026-12339 (GCVE-0-2026-12339)

Vulnerability from cvelistv5 – Published: 2026-08-10 18:20 – Updated: 2026-08-10 18:20

Title

Authenticated Arbitrary File Write Vulnerability in multiple devices

Summary

Severity

6.9 (Medium)


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

CWE

CWE-22 - Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')

Assigner

TPLink

References

4 references

URL	Tags
https://www.tp-link.com/en/support/download/tl-mr…	patch
https://www.tp-link.com/en/support/download/arche…	patch
https://www.tp-link.com/en/support/download/arche…	patch
https://www.tp-link.com/en/support/faq/5237/	vendor-advisory

Impacted products

3 products

Vendor	Product	Version
TP-Link Systems Inc.	TL-MR6400 v5.3	Affected: 0 , < (EU)_1.10.0 0.9.1 v0001.0 Build 260613 RC.76099n (custom)
TP-Link Systems Inc.	Archer MR600 v2	Affected: 0 , < (EU)_1.10.0 0.9.1 v0001.0 Build 260618 RC.40417n (custom)
TP-Link Systems Inc.	Archer MR200 v7	Affected: 0 , < (EU)_1.3.0 0.9.1 v0001.0 Build 260605 Rel.57870n (custom)

Credits

MrBruh

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "TL-MR6400 v5.3",
          "vendor": "TP-Link Systems Inc.",
          "versions": [
            {
              "lessThan": "(EU)_1.10.0 0.9.1 v0001.0 Build 260613 RC.76099n",
              "status": "affected",
              "version": "0",
              "versionType": "custom"
            }
          ]
        },
        {
          "defaultStatus": "unaffected",
          "product": "Archer MR600 v2",
          "vendor": "TP-Link Systems Inc.",
          "versions": [
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            }
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          "vendor": "TP-Link Systems Inc.",
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              "lessThan": "(EU)_1.3.0 0.9.1 v0001.0 Build 260605 Rel.57870n",
              "status": "affected",
              "version": "0",
              "versionType": "custom"
            }
          ]
        }
      ],
      "credits": [
        {
          "lang": "en",
          "type": "finder",
          "value": "MrBruh"
        }
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          "lang": "en",
          "supportingMedia": [
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              "base64": false,
              "type": "text/html",
              "value": "A Zip Slip vulnerability in the WebUI ISP\nUpgrade functionality allows arbitrary file write via a crafted archive\ncontaining directory traversal sequences. An authenticated administrator may\noverwrite arbitrary files on the system.\u003cdiv\u003eSuccessful\nexploitation may allow arbitrary file to overwrite on the underlying system, affecting system integrity and availability. \u003c/div\u003e"
            }
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          "value": "A Zip Slip vulnerability in the WebUI ISP\nUpgrade functionality allows arbitrary file write via a crafted archive\ncontaining directory traversal sequences. An authenticated administrator may\noverwrite arbitrary files on the system.Successful\nexploitation may allow arbitrary file to overwrite on the underlying system, affecting system integrity and availability."
        }
      ],
      "impacts": [
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          "capecId": "CAPEC-17",
          "descriptions": [
            {
              "lang": "en",
              "value": "CAPEC-17 Using Malicious Files"
            }
          ]
        }
      ],
      "metrics": [
        {
          "cvssV4_0": {
            "Automatable": "NOT_DEFINED",
            "Recovery": "NOT_DEFINED",
            "Safety": "NOT_DEFINED",
            "attackComplexity": "LOW",
            "attackRequirements": "NONE",
            "attackVector": "ADJACENT",
            "baseScore": 6.9,
            "baseSeverity": "MEDIUM",
            "exploitMaturity": "NOT_DEFINED",
            "privilegesRequired": "HIGH",
            "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:H/UI:N/VC:N/VI:H/VA:L/SC:N/SI:N/SA:N",
            "version": "4.0",
            "vulnAvailabilityImpact": "LOW",
            "vulnConfidentialityImpact": "NONE",
            "vulnIntegrityImpact": "HIGH",
            "vulnerabilityResponseEffort": "NOT_DEFINED"
          },
          "format": "CVSS",
          "scenarios": [
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              "lang": "en",
              "value": "GENERAL"
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      "problemTypes": [
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              "lang": "en",
              "type": "CWE"
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      "providerMetadata": {
        "dateUpdated": "2026-08-10T18:20:50.576Z",
        "orgId": "f23511db-6c3e-4e32-a477-6aa17d310630",
        "shortName": "TPLink"
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      "references": [
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          "tags": [
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          "url": "https://www.tp-link.com/en/support/download/tl-mr6400/v5.30/#Firmware"
        },
        {
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          ],
          "url": "https://www.tp-link.com/en/support/download/archer-mr600/v2/#Firmware"
        },
        {
          "tags": [
            "patch"
          ],
          "url": "https://www.tp-link.com/en/support/download/archer-mr200/v7/#Firmware"
        },
        {
          "tags": [
            "vendor-advisory"
          ],
          "url": "https://www.tp-link.com/en/support/faq/5237/"
        }
      ],
      "source": {
        "discovery": "UNKNOWN"
      },
      "title": "Authenticated Arbitrary File Write Vulnerability in multiple devices",
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    "datePublished": "2026-08-10T18:20:50.576Z",
    "dateReserved": "2026-06-15T15:51:52.827Z",
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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.

Action not permitted

GHSA-WWW9-662G-PFFV

CVE-2026-12339 (GCVE-0-2026-12339)

Tags

Sightings

Nomenclature