CVE-2026-0834 Logic Vulnerability on TP-Link Archer C20, Archer AX53 and TL-WR841N v13
Unauthenticated adjacent attackers can execute administrative commands like factory reset and reboot on TP-Link routers, causing service disruption and configuration loss.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-0834?
CVE-2026-0834 is a high-severity missing authorization vulnerability in TP Link Systems Inc. Archer C20 V5, published on 21 Jan 2026. It can only be exploited from the same machine or local network, with no action from the victim.
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
Weakness: CWE-290
Which versions are affected by CVE-2026-0834?
It affects 2 products.
Products include Tp-Link Archer Ax53 Firmware, Tp-Link Archer C20 Firmware.
How do I fix CVE-2026-0834?
No fix has been published for CVE-2026-0834 yet. Limit exposure of the affected software until one is available.
Upgrade, and check permissions on every request on the server, not only in the interface. More about Missing authorization.
Is CVE-2026-0834 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-0834 exists.
Public exploit code: 1 proofs of concept on GitHub.
Other vulnerabilities in TP Link Systems Inc. Archer C20 V5
- CVE-2025-62673 Heap-based Buffer Overflow Vulnerability in Archer AX53 and AX12
- CVE-2026-30815 OS Command Injection Vulnerability in OpenVPN Module in TP-Link AX53
- CVE-2026-30818 OS Command Injection Vulnerability in dnsmasq Module in TP-Link AX53
- CVE-2025-15608 Buffer Overflow in Network Probe Handling Function of TP-Link Archer AX53 + Archer AX55
- CVE-2026-30814 Buffer Overflow Vulnerability in TP-Link AX53
Sources
Also known as GHSA-cpr3-8r3m-jjf4.