TI-2026-10212 Aliases CVE-2026-11834 GHSA-w296-94hj-pfcg

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

MEDIUM 41CWE-78Published 2026-06-22 · Updated 2026-06-26

Key facts

Attack vector: Adjacent network
Privileges required: None
User interaction: None
Attack complexity: Low
Attack requirements: None
Impact type: Code execution
Confidentiality · integrity · availability: High · High · High
Fix status: Fixed

Attack profile from CVSS 4.0 · CNA. Fix status from CNA. Impact type from CWE-78.

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.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV

EPSS 0.00665 52nd percentileScored 2026-11-07

Fix Fixed Archer MR200 v07 (TP-Link Systems Inc.): 1.3.0 Build 250605Archer MR200 v8 (TP-Link Systems Inc.): 1.5.0 Build 260605+5 more products

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation: None
Automatable: No
Technical impact: Total

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

Vendor	Product	Affected versions	Fixed in	Status	Source
TP-Link	Archer MR200 v07	before 1.3.0 Build 250605	1.3.0 Build 250605	Patch available	CNA
TP-Link	Archer MR200 v8	before 1.5.0 Build 260605	1.5.0 Build 260605	Patch available	CNA
TP-Link	Archer MR402 v1	before 1.5.0 Build 260605	1.5.0 Build 260605	Patch available	CNA
TP-Link	Archer VR2100 v1	before EU_V1_260330	EU_V1_260330	Patch available	CNA
TP-Link	Archer C20 v5	before EU_V5_260317; before US_V5_260419	EU_V5_260317, US_V5_260419	Patch available	CNA
TP-Link	Archer C20 v6	before V6_260608	V6_260608	Patch available	CNA
TP-Link	TL-MR6400 v7	before 1.7.0 Build 260413	1.7.0 Build 260413	Patch available	CNA

Archer MR200 v07 VendorTP-Link Affected before 1.3.0 Build 250605 Fixed in 1.3.0 Build 250605 Patch available CNA
Archer MR200 v8 VendorTP-Link Affected before 1.5.0 Build 260605 Fixed in 1.5.0 Build 260605 Patch available CNA
Archer MR402 v1 VendorTP-Link Affected before 1.5.0 Build 260605 Fixed in 1.5.0 Build 260605 Patch available CNA
Archer VR2100 v1 VendorTP-Link Affected before EU_V1_260330 Fixed in EU_V1_260330 Patch available CNA
Archer C20 v5 VendorTP-Link Affected before EU_V5_260317; before US_V5_260419 Fixed in EU_V5_260317, US_V5_260419 Patch available CNA
Archer C20 v6 VendorTP-Link Affected before V6_260608 Fixed in V6_260608 Patch available CNA
TL-MR6400 v7 VendorTP-Link Affected before 1.7.0 Build 260413 Fixed in 1.7.0 Build 260413 Patch available CNA

Remediation

Fix · CNA Archer MR200 v07 (TP-Link Systems Inc.) Fixed in 1.3.0 Build 250605
Fix · CNA Archer MR200 v8 (TP-Link Systems Inc.) Fixed in 1.5.0 Build 260605
Fix · CNA Archer MR402 v1 (TP Link Systems Inc.) Fixed in 1.5.0 Build 260605
Fix · CNA Archer VR2100 v1 (TP-Link Systems Inc.) Fixed in EU_V1_260330
Fix · CNA Archer C20 v5 (TP-Link Systems Inc.) Fixed in EU_V5_260317, US_V5_260419
Fix · CNA Archer C20 v6 (TP-Link Systems Inc.) Fixed in V6_260608
Fix · CNA TL-MR6400 v7 (TP-Link Systems Inc.) Fixed in 1.7.0 Build 260413

Timeline

2026-10-02 Threatist record created from CVE-2026-11834
2026-10-03 Alias added: GHSA-w296-94hj-pfcg

References

Patch 6

Advisory 1

https://www.tp-link.com/us/support/faq/5141/

Other 1

https://mattg.systems/posts/cve-2026-11834/

TI-2023-16571 TP-Link TL-WR940N V2/V4, TL-WR841N V8/V10, and TL-WR740N V1/V2 was discovered to contain… KEVCVSS 3.1HIGH 8.8
TI-2023-01313 Command injection in TP-Link Archer AX21 KEVCVSS 3.1HIGH 8.8
TI-2020-14907 TP-Link TL-WA855RE V5 20200415-rel37464 devices allow an unauthenticated attacker (on the… KEVCVSS 3.1HIGH 8.8
TI-2025-08589 Authenticated RCE via Parental Control command injection KEVCVSS 4.0HIGH 8.6
TI-2015-02672 Directory traversal vulnerability in TP-LINK Archer C5 (1.2) with firmware before 150317… KEVCVSS 3.1HIGH 7.5
TI-2023-27456 Authentication bypass by spoofing in TP-Link TL-WR841N KEVCVSS 3.1MEDIUM 6.5

See all 636 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences