CVE-2026-0834
Logic Vulnerability on TP-Link Archer C20, Archer AX53 and TL-WR841N v13
- State
- Published
- Severity
- 7.2 High
- Published
- Jan 21, 2026
- Updated
- Apr 28, 2026
- Reserved
- Jan 9, 2026
Description
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
Scores
| CVSS | Score | Vector | Source |
|---|---|---|---|
| 4.0 | 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 | TPLink |
Weaknesses
- CWE-290 Authentication Bypass by Spoofing
Affected Products
| Product | Versions |
|---|---|
Archer C20 v6.0, Archer AX53 v1.0TP-Link Systems Inc. |
|
Archer C20 V5TP-Link Systems Inc. |
|
TL-WR841N v13TP Link Systems Inc. |
|
References
- https://www.tp-link.com/en/support/download/archer-c20/v6/#Firmwarepatch
- https://www.tp-link.com/en/support/download/archer-ax53/v1/#Firmwarepatch
- 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/archer-c20/v5/#Firmwarepatch
- https://www.tp-link.com/en/support/download/archer-c20/v5/#Firmwarepatch
- https://www.tp-link.com/us/support/download/tl-wr841n/v13/#Firmwarepatch
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