A weakness has been identified in Wavlink WL-WN570HA1 R70HA1 V1410_221110. This issue affects the function set_sys_adm of the file /cgi-bin/adm.cgi. This manipulation of the argument Username causes command injection. It is possible to initiate the attack remotely. The exploit has been made available to the public and could be used for attacks. Once again the vendors acted very professional and confirms, "that the WN570HA1 firmware version R70HA1 V1410_221110 has been removed from our website." This vulnerability only affects products that are no longer supported by the maintainer.
Vulnerability Details
The CVE-2026-7690 vulnerability is classified as a command injection issue, allowing attackers to execute arbitrary commands on the affected system. It has a CVSS score of 2.1, indicating a low severity level. This low score is due to the requirement for low privileges and the potential for low impact on confidentiality, integrity, and availability. The affected product is Wavlink WL-WN570HA1 firmware version R70HA1 V1410_221110, which has been confirmed as no longer supported. The CWE classifications associated with this vulnerability include CWE-74 (Improper Neutralization of Special Elements in Output Used by a Downstream Component) and CWE-77 (Improper Neutralization of Special Elements used in a Command ('Command Injection')).
Technical Analysis
The root cause of this vulnerability is the improper handling of user input in the function set_sys_adm. Attackers may leverage this vulnerability remotely due to its nature, which allows for exploitation over the network. The attack complexity is assessed as low, meaning that the exploit requires minimal technical knowledge. Privileges required for exploitation are low, allowing attackers with limited access to execute commands. User interaction is not required, making this vulnerability particularly dangerous, as it can be exploited without any action from the targeted user. The impacts on confidentiality, integrity, and availability are all assessed as low, suggesting that while the exploitation potential exists, the actual effects may be limited.
Risk & Impact Analysis
Risk to organizations includes the possibility of unauthorized command execution on affected devices, which could lead to further compromise of the network. Given that this vulnerability affects a product that is no longer maintained, organizations using the Wavlink WL-WN570HA1 should consider the potential for exploitation in their risk assessments. The low CVSS score indicates a lower immediate threat compared to higher-severity vulnerabilities, but the public availability of the exploit could increase the risk of attacks. Organizations should schedule remediation for this vulnerability, prioritizing it according to their overall security posture and the exposure of their network devices.
Exploitation Status
Signal | Status |
|---|---|
Known Exploit | Yes |
Public PoC | No |
Actively Exploited | No |
Ransomware Use | No |
Affected Versions
This vulnerability specifically affects Wavlink WL-WN570HA1 firmware version R70HA1 V1410_221110. All versions prior to vendor patch are susceptible as the product has been confirmed as unsupported.
Mitigation & Remediation
Organizations should prioritize patching immediately. As the product is no longer maintained, upgrading to a supported device is recommended. If patching is not possible, organizations should consider implementing network controls to restrict access to affected devices and monitor traffic for suspicious activity. Configuration hardening can also help mitigate the risks associated with this vulnerability.
Detection Guidance
To detect potential exploitation of this vulnerability, organizations should monitor logs for any unauthorized access attempts to the /cgi-bin/adm.cgi endpoint. Additionally, behavioral anomalies, such as unexpected command executions or access from unusual IP addresses, should be investigated.
AppSecure Threat Intelligence Insight
The long-term significance of CVE-2026-7690 lies in its representation of the risks associated with unsupported products. Security teams should note that vulnerabilities in legacy systems can remain exploitable even after vendor support has ended. Organizations should be proactive in their approach to cybersecurity by regularly assessing their product lifecycle and ensuring timely upgrades to maintain security posture.
For further guidance on vulnerability management, organizations may consider reviewing our comprehensive resource on a vulnerability management program and understanding the importance of timely patches.
Organizations should also follow industry trends and emerging threats, such as those detailed in our recent analysis of ransomware targeting to enhance their defensive strategies.
Finally, organizations should consider engaging in regular penetration testing to identify and remediate similar vulnerabilities in their infrastructure.
Disclaimer: This content was generated using AI. While we strive for accuracy, please verify critical information with official sources.
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