CVE-2026-9254
High
Description
An unauthenticated OS command injection vulnerability exists in the parental control functionality of Archer BE800 V1, BE3600 V1, and AX75 V1 due to improper filtering and neutralization of special characters in certain parameters. A LAN-based attacker can inject arbitrary commands and execute them with root privileges. Successful exploitation may result in complete device compromise and impact the confidentiality, integrity, and availability of the affected device and network traffic.
SeverityHigh
CVSS8.7
Exploit probability—
ProductArcher BE800 V1
PublishedAug 24, 2026
First seenAug 24, 2026
Weakness typeCWE-78OS command injection
How to fix
Update
- TP-Link Systems Inc. Archer BE800 V11.4.2 Build 260708 or later
- TP-Link Systems Inc. Archer BE3600 V11.2.6 Build 20260617 or later
- TP-Link Systems Inc. Archer AX75 V11.1.6 Build 260716 or later
Patches
- tp-link.com/en/support/download/archer-be800/v1/#Firmware
- tp-link.com/us/support/download/archer-be800/v1/#Firmware
- tp-link.com/en/support/download/archer-be3600/v1/#Firmware
- tp-link.com/us/support/download/archer-be3600/v1/#Firmware
- tp-link.com/kr/support/download/archer-be3600/v1/#Firmware
- tp-link.com/en/support/download/archer-ax75/v1/#Firmware
- tp-link.com/us/support/download/archer-ax75/v1/#Firmware
Vendor advisories
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| TP-Link Systems Inc. Archer BE800 V1 | v < 1.4.2 Build 260708 | 1.4.2 Build 260708 |
| TP-Link Systems Inc. Archer BE3600 V1 | v < 1.2.6 Build 20260617 | 1.2.6 Build 20260617 |
| TP-Link Systems Inc. Archer AX75 V1 | v < 1.1.6 Build 260716 | 1.1.6 Build 260716 |
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