CVE-2024-22544 is a command injection vulnerability identified in the Linksys Router E1700 version 1.0.04 (build 3). The flaw exists in the setDateTime function, which is used to set the device's system time. Due to insufficient input validation or sanitization, an authenticated attacker with low privileges can inject arbitrary commands into this function, leading to remote code execution on the device. The vulnerability is exploitable over the network (attack vector: adjacent network), requires low attack complexity, and only low-level privileges (authenticated user) are needed. No user interaction is required, and the vulnerability affects the confidentiality, integrity, and availability of the device, as arbitrary code execution can allow attackers to take full control of the router. This could enable attackers to intercept or manipulate network traffic, disrupt network services, or use the device as a foothold for further attacks within an organization’s network. The CVSS v3.1 base score is 8.0, reflecting the high impact and relatively easy exploitation conditions. The vulnerability is categorized under CWE-77 (Improper Neutralization of Special Elements used in a Command ('Command Injection')). No patches or official fixes have been published at the time of this report, and no known exploits are currently observed in the wild.

The impact of CVE-2024-22544 is significant for organizations using the Linksys Router E1700 version 1.0.04 (build 3). Successful exploitation allows attackers to execute arbitrary code with the privileges of the router’s system, potentially leading to full device compromise. This can result in interception or manipulation of network traffic, disruption of network availability, and unauthorized access to internal networks. Given that routers serve as critical network perimeter devices, compromise can facilitate lateral movement, data exfiltration, or persistent access for attackers. The vulnerability’s requirement for authentication limits exposure to some extent, but many environments have weak or default credentials, increasing risk. The absence of patches means organizations must rely on mitigation strategies to reduce risk. The vulnerability could also impact home users or small businesses relying on this router model, potentially exposing sensitive personal or business data.

1. Immediately change default or weak router credentials to strong, unique passwords to reduce risk of authenticated exploitation. 2. Restrict access to the router’s management interface to trusted IP addresses or internal networks only, using firewall rules or network segmentation. 3. Disable remote management features if not required to minimize exposure. 4. Monitor router logs for unusual activity or unauthorized access attempts. 5. If possible, isolate the affected router from critical network segments until a patch or firmware update is available. 6. Regularly check Linksys official channels for firmware updates or security advisories addressing this vulnerability. 7. Consider replacing the affected router with a more secure model if patching is not forthcoming. 8. Employ network intrusion detection systems to detect anomalous command injection attempts targeting the router. 9. Educate users and administrators on the risks of authenticated vulnerabilities and the importance of credential hygiene.