Vulnerability-Lookup

CVE-2026-11834 (GCVE-0-2026-11834)

Vulnerability from cvelistv5 – Published: 2026-06-22 17:53 – Updated: 2026-06-22 19:54

Title

Unauthenticated Command Injection via DHCP Option Handling in Multiple TP-Link Routers

Summary

A command injection vulnerability has been identified in the DHCP option processing logic in multiple TP-Link router models, due to insufficient validation of externally supplied DHCP option data. An adjacent attacker may exploit this vulnerability by supplying crafted DHCP responses, potentially resulting in unauthorized command execution during device initialization or provisioning workflows. This typically occurs when the device is in a factory-default or unconfigured state. Successful exploitation may allow an adjacent, unauthenticated attacker to execute arbitrary commands with elevated privileges, potentially leading to full compromise of the affected device and unauthorized administrative control.

Severity

8.7 (High)


                        
                          CVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:N/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-78 - Improper neutralization of special elements used in an OS command ('OS command injection')

Assigner

TPLink

References

7 references

URL	Tags
https://www.tp-link.com/en/support/download/archer-c20/	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/download/tl-mr…	patch
https://www.tp-link.com/en/support/download/arche…	patch
https://www.tp-link.com/us/support/download/archer-c20/	patch
https://www.tp-link.com/us/support/faq/5141/	vendor-advisory

Impacted products

7 products

Vendor	Product	Version
TP-Link Systems Inc.	Archer MR200 v07	Affected: 0 , < 1.3.0 Build 250605 (custom)
TP-Link Systems Inc.	Archer MR200 v8	Affected: 0 , < 1.5.0 Build 260605 (custom)
TP Link Systems Inc.	Archer MR402 v1	Affected: 0 , < 1.5.0 Build 260605 (custom)
TP-Link Systems Inc.	Archer VR2100 v1	Affected: 0 , < EU_V1_260330 (custom)
TP-Link Systems Inc.	Archer C20 v5	Affected: 0 , < EU_V5_260317 (custom) Affected: 0 , < US_V5_260419 (custom)
TP-Link Systems Inc.	Archer C20 v6	Affected: 0 , < V6_260608 (custom)
TP-Link Systems Inc.	TL-MR6400 v7	Affected: 0 , < 1.7.0 Build 260413 (custom)

Credits

Matt Graham (mattg.systems)

Show details on NVD website

JSON

To clipboard

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GHSA-W296-94HJ-PFCG

Vulnerability from github – Published: 2026-06-22 21:30 – Updated: 2026-06-22 21:30

Details

Successful exploitation may allow an adjacent, unauthenticated attacker to execute arbitrary commands with elevated privileges, potentially leading to full compromise of the affected device and unauthorized administrative control.

Severity

8.7 (High)


                  
                    CVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/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_at": null,
    "nvd_published_at": "2026-06-22T19:16:38Z",
    "severity": "HIGH"
  },
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  "id": "GHSA-w296-94hj-pfcg",
  "modified": "2026-06-22T21:30:59Z",
  "published": "2026-06-22T21:30:59Z",
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    }
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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.

Action not permitted

CVE-2026-11834 (GCVE-0-2026-11834)

GHSA-W296-94HJ-PFCG

Tags

Sightings

Nomenclature