Vulnerability-Lookup

CVE-2026-12001 (GCVE-0-2026-12001)

Vulnerability from cvelistv5 – Published: 2026-07-27 20:08 – Updated: 2026-07-28 20:49

Title

Hardcoded Credential Vulnerability in Multiple TP-Link Router Models

Summary

A hardcoded credential vulnerability exists in the firmware of multiple TP-Link routers (TL-WR845N v4, TL-WR850N v3, Archer C20 v6 & Archer MR200 v5). Authentication-related credential material is embedded within a password file in the firmware image and may be recovered through firmware analysis. Successful exploitation could result in unauthorized access to privileged functions on affected devices.

Severity

5.2 (Medium)


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

SSVC

Exploitation: none Automatable: no Technical Impact: partial

CISA Coordinator (v2.0.3)

CWE

CWE-798 - Use of Hard-coded Credentials

Assigner

TPLink

References

9 references

URL	Tags
https://www.tp-link.com/en/support/download/arche…	patch
https://www.tp-link.com/in/support/download/arche…	patch
https://www.tp-link.com/en/support/download/arche…	patch
https://www.tp-link.com/us/support/download/arche…	patch
https://www.tp-link.com/in/support/download/arche…	patch
https://www.tp-link.com/en/support/download/tl-wr…	patch
https://www.tp-link.com/in/support/download/tl-wr…	patch
https://www.tp-link.com/in/support/download/tl-wr…	patch
https://www.tp-link.com/us/support/faq/5210/	vendor-advisory

Impacted products

4 products

Vendor	Product	Version
TP-Link Systems Inc.	TL-WR850N v3	Affected: 0 , < TL-WR850N(IN)_V3.48_3.16.0 Build 260422_2048 (custom)
TP-Link Systems Inc.	Archer C20 v6	Affected: 0 , < Archer C20(US)_V6_250630 (custom)
TP Link Systems Inc.	TL-WR845N v4	Affected: 0 , < TL-WR845N(UN)_V4_250401 (custom)
TP-Link Systems Inc.	Archer MR200 v5	Affected: 0 , < Archer MR200(EU)_V5.20_1.3.0 Build 260319 (custom)

Credits

Carlos Trujillo Swaroop Dora, Akash Singh, Parth Chaurasia, Devel Lunkad, Ashutosh Kumar and S.Venkatesan , IoT Security Lab, Indian Institute of Information Technology, Allahabad

Show details on NVD website

JSON

To clipboard

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GHSA-884R-QM45-3J9G

Vulnerability from github – Published: 2026-07-27 21:31 – Updated: 2026-07-27 21:31

Details

Successful exploitation could result in unauthorized access to privileged functions on affected devices.

Severity

5.2 (Medium)


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

Show details on source website

JSON

To clipboard

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  ],
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    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-07-27T21:16:47Z",
    "severity": "MODERATE"
  },
  "details": "A hardcoded credential\nvulnerability exists in the firmware of multiple TP-Link routers (TL-WR845N v4, TL-WR850N v3, Archer C20 v6 \u0026 Archer MR200 v5). \u00a0Authentication-related credential material is\nembedded within a password file in the firmware image and may be recovered\nthrough firmware analysis.\n\n\n\n\n\nSuccessful\nexploitation could result in unauthorized access to privileged functions on\naffected devices.",
  "id": "GHSA-884r-qm45-3j9g",
  "modified": "2026-07-27T21:31:23Z",
  "published": "2026-07-27T21:31:23Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-12001"
    },
    {
      "type": "WEB",
      "url": "https://www.tp-link.com/en/support/download/archer-c20/v6/#Firmware"
    },
    {
      "type": "WEB",
      "url": "https://www.tp-link.com/en/support/download/archer-mr200/v5/#Firmware"
    },
    {
      "type": "WEB",
      "url": "https://www.tp-link.com/en/support/download/tl-wr845n/#Firmware"
    },
    {
      "type": "WEB",
      "url": "https://www.tp-link.com/in/support/download/archer-c20/v6/#Firmware"
    },
    {
      "type": "WEB",
      "url": "https://www.tp-link.com/in/support/download/archer-mr200/v5/#Firmware"
    },
    {
      "type": "WEB",
      "url": "https://www.tp-link.com/in/support/download/tl-wr845n/#Firmware"
    },
    {
      "type": "WEB",
      "url": "https://www.tp-link.com/in/support/download/tl-wr850n/#Firmware"
    },
    {
      "type": "WEB",
      "url": "https://www.tp-link.com/us/support/download/archer-c20/v6/#Firmware"
    },
    {
      "type": "WEB",
      "url": "https://www.tp-link.com/us/support/faq/5210"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:4.0/AV:P/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/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"
    }
  ]
}

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

CVE-2026-12001 (GCVE-0-2026-12001)

GHSA-884R-QM45-3J9G

Tags

Sightings

Nomenclature