Vulnerability-Lookup

GHSA-CPR3-8R3M-JJF4

Vulnerability from github – Published: 2026-01-21 18:30 – Updated: 2026-04-28 21:35

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

8.8 (High)


                  
                    CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

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

Show details on source website

JSON

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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": "2026-04-28T21:35:54Z",
  "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/v5/#Firmware"
    },
    {
      "type": "WEB",
      "url": "https://www.tp-link.com/en/support/download/archer-c20/v6/#Firmware"
    },
    {
      "type": "WEB",
      "url": "https://www.tp-link.com/us/support/download/archer-c20/v5/#Firmware"
    },
    {
      "type": "WEB",
      "url": "https://www.tp-link.com/us/support/download/tl-wr841n/v13/#Firmware"
    },
    {
      "type": "WEB",
      "url": "https://www.tp-link.com/us/support/faq/4905"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
      "type": "CVSS_V3"
    },
    {
      "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: 2026-04-28 17:46

Title

Logic Vulnerability on TP-Link Archer C20, Archer AX53 and TL-WR841N v13

Summary

Logic vulnerability in TP-Link Archer C20 v5, 6.0, Archer AX53 v1.0 and TL-WR841N v13 (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 C20 v5 <EU_V5_260317 or < US_V5_260419 Archer AX53 v1.0 < V1_251215 TL-WR841N v13 < 0.9.1 Build 20231120 Rel.62366

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

SSVC

Exploitation: poc Automatable: no Technical Impact: total

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-01-22 04:55 UTC

CWE

CWE-290 - Authentication Bypass by Spoofing

Assigner

TPLink CNA under the mitre root

CNA scorecard B 87/100 over 109 records in the last 180 days details

References

7 references

URL	Tags
https://www.tp-link.com/en/support/download/arche…	patch
https://www.tp-link.com/en/support/download/arche…	patch
https://mattg.systems/posts/cve-2026-0834/
https://www.tp-link.com/us/support/faq/4905/	vendor-advisory
https://www.tp-link.com/us/support/download/arche…	patch
https://www.tp-link.com/en/support/download/arche…	patch
https://www.tp-link.com/us/support/download/tl-wr…	patch

Impacted products

3 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)
TP-Link Systems Inc.	Archer C20 V5	Affected: 0 , < US_V5_260419 (custom) Affected: 0 , < EU_V5_260317 (custom)
TP Link Systems Inc.	TL-WR841N v13	Affected: 0 , < 0.9.1 Build 20231120 Rel.62366 (custom)

Credits

Matt Graham (mattg.systems) Ben Grinberg, Adiel Sol, Daniel Lubel, Erez Cohen, Nir Somech, Arad Inbar, Dream Group

Show details on NVD website

JSON

To clipboard

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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.

Vulnerability timeline

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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.
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