Vulnerability-Lookup

GHSA-CPR3-8R3M-JJF4

Vulnerability from github – Published: 2026-01-21 18:30 – Updated: 2026-01-21 21:30

Details

Logic vulnerability in TP-Link Archer C20 v6.0 and Archer AX53 v1.0 (TDDP module) allows unauthenticated adjacent attackers to execute administrative commands including factory reset and device reboot without credentials. Attackers on the adjacent network can remotely trigger factory resets and reboots without credentials, causing configuration loss and interruption of device availability.This issue affects Archer C20 v6.0 < V6_251031.

Archer AX53 v1.0 <

V1_251215

Severity ?

5.3 (Medium)


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

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{
  "affected": [],
  "aliases": [
    "CVE-2026-0834"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-290"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-01-21T18:16:24Z",
    "severity": "MODERATE"
  },
  "details": "Logic vulnerability in TP-Link Archer C20 v6.0 and Archer AX53 v1.0 (TDDP module) allows unauthenticated adjacent attackers to execute administrative commands including factory reset and device reboot without credentials.\u00a0Attackers on the adjacent network can remotely trigger factory resets and reboots without credentials, causing configuration loss and interruption of device availability.This issue affects Archer C20 v6.0 \u003c V6_251031.\n\n\nArcher AX53 v1.0 \u003c \n\nV1_251215",
  "id": "GHSA-cpr3-8r3m-jjf4",
  "modified": "2026-01-21T21:30:29Z",
  "published": "2026-01-21T18:30:32Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-0834"
    },
    {
      "type": "WEB",
      "url": "https://killing.systems/posts/cve-2026-0834"
    },
    {
      "type": "WEB",
      "url": "https://mattg.systems/posts/cve-2026-0834"
    },
    {
      "type": "WEB",
      "url": "https://www.tp-link.com/en/support/download/archer-ax53/v1/#Firmware"
    },
    {
      "type": "WEB",
      "url": "https://www.tp-link.com/en/support/download/archer-c20/v6/#Firmware"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/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-2026-0834 (GCVE-0-2026-0834)

Vulnerability from cvelistv5 – Published: 2026-01-21 17:14 – Updated: 2026-01-22 04:55

Title

Logic Vulnerability on TP-Link Archer C20 and Archer AX53

Summary

Severity ?

7.2 (High)


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

CWE

CWE-290 - Authentication Bypass by Spoofing

Assigner

TPLink

References

URL

Tags

	https://www.tp-link.com/en/support/download/arche…
	https://www.tp-link.com/en/support/download/arche…
	https://mattg.systems/posts/cve-2026-0834/

Impacted products

	Vendor	Product	Version
	TP-Link Systems Inc.	Archer C20 v6.0, Archer AX53 v1.0	Affected: 0 , < V6_251031 (custom) Affected: 0 , < V1_251215 (custom)

Credits

Matt Graham (mattg.systems)

Show details on NVD website

JSON

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{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2026-0834",
                "options": [
                  {
                    "Exploitation": "poc"
                  },
                  {
                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "total"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2026-01-21T00:00:00+00:00",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2026-01-22T04:55:48.987Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "modules": [
            "tddp"
          ],
          "product": "Archer C20 v6.0, Archer AX53 v1.0",
          "vendor": "TP-Link Systems Inc.",
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              "status": "affected",
              "version": "0",
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              "base64": false,
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      "impacts": [
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      "metrics": [
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            "Recovery": "NOT_DEFINED",
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            "baseScore": 7.2,
            "baseSeverity": "HIGH",
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            "valueDensity": "NOT_DEFINED",
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            "vulnerabilityResponseEffort": "NOT_DEFINED"
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      "providerMetadata": {
        "dateUpdated": "2026-01-21T19:16:16.759Z",
        "orgId": "f23511db-6c3e-4e32-a477-6aa17d310630",
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      },
      "references": [
        {
          "url": "https://www.tp-link.com/en/support/download/archer-c20/v6/#Firmware"
        },
        {
          "url": "https://www.tp-link.com/en/support/download/archer-ax53/v1/#Firmware"
        },
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          "url": "https://mattg.systems/posts/cve-2026-0834/"
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Sightings

Author	Source	Type	Date

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.

Action not permitted

GHSA-CPR3-8R3M-JJF4

CVE-2026-0834 (GCVE-0-2026-0834)

Tags

Sightings

Nomenclature