CVE-2023-48804 in X6000R
Summary
by MITRE • 11/30/2023
In TOTOLINK X6000R V9.4.0cu.852_B20230719, the shttpd file, sub_4119A0 function obtains fields from the front-end through Uci_ Set_ The Str function when passed to the CsteSystem function creates a command execution vulnerability.
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Analysis
by VulDB Data Team • 02/28/2026
The vulnerability identified as CVE-2023-48804 resides within the TOTOLINK X6000R router firmware version V9.4.0cu.852_B20230719, specifically within the shttpd file implementation. This issue represents a critical command injection flaw that arises from improper input validation and handling within the web server component of the device. The vulnerability manifests when user-supplied data is processed through the Uci_Set_Str function, which subsequently passes this data to the CsteSystem function without adequate sanitization or validation measures.
The technical exploitation of this vulnerability occurs through the sub_4119A0 function within the shttpd module, where frontend parameters are directly incorporated into system command execution contexts. This design flaw creates an environment where malicious actors can inject arbitrary commands that will be executed with the privileges of the web server process, potentially leading to full system compromise. The vulnerability stems from a classic improper input validation issue that allows attackers to bypass security controls and execute unauthorized code on the affected device.
From an operational perspective, this command execution vulnerability poses significant risks to network security and device integrity. An attacker who can successfully exploit this vulnerability gains the ability to execute arbitrary commands on the router, potentially leading to complete system takeover, data exfiltration, or the installation of persistent backdoors. The impact extends beyond individual device compromise as compromised routers can serve as entry points for broader network infiltration, particularly in enterprise or home networks where routers act as primary gateways. This vulnerability affects the fundamental security posture of the device and could enable attackers to manipulate network traffic, disable security features, or establish persistent access.
The vulnerability aligns with CWE-78, which describes improper neutralization of special elements used in OS commands, and represents a direct violation of secure coding practices for input validation and command execution. From an ATT&CK framework perspective, this vulnerability maps to T1059.001 (Command and Scripting Interpreter: PowerShell) and T1068 (Exploitation for Privilege Escalation) as it enables arbitrary command execution and potential privilege escalation within the device's operating environment. The affected TOTOLINK X6000R device requires immediate remediation through firmware updates provided by the vendor to address this critical security flaw and prevent unauthorized access to network infrastructure.