Vulnerability · Published Jan 21, 2026 · Assigned by TPLink
CVE-2026-0834Logic Vulnerability on TP-Link Archer C20, Archer AX53 and TL-WR841N v13
High 7.2
In plain English
A high-severity authentication bypass by spoofing in Archer C20 V5 from TP-Link Systems Inc.. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 0.4% (higher than 37% of all known vulnerabilities). Ready-made attack tooling exists: public proof-of-concept code.
Official 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
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| TP-Link Systems Inc. | Archer C20 v6.0, Archer AX53 v1.0 | 0 – before V6_2510310 – before V1_251215 |
| TP-Link Systems Inc. | Archer C20 V5 | 0 – before US_V5_2604190 – before EU_V5_260317 |
| TP Link Systems Inc. | TL-WR841N v13 | 0 – before 0.9.1 Build 20231120 Rel.62366 |
Weakness: CWE-290 · Vector: 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
References
- https://www.tp-link.com/en/support/download/archer-c20/v6/#Firmware patch
- https://www.tp-link.com/en/support/download/archer-ax53/v1/#Firmware 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/archer-c20/v5/#Firmware patch
- https://www.tp-link.com/en/support/download/archer-c20/v5/#Firmware patch
- https://www.tp-link.com/us/support/download/tl-wr841n/v13/#Firmware patch