A weakness has been identified in D-Link DIR-823X firmware version 250416. This vulnerability allows command injection through the manipulation of the argument wd_enable in the function sub_412E7C of the file /goform/set_wifidog_settings. The attack can be executed remotely, and the exploit has been made available to the public, which increases the risk of potential attacks. With a CVSS score of 5.5, this vulnerability is classified as medium severity, indicating a significant risk to organizations.
Organizations should prioritize addressing this vulnerability as it can potentially lead to unauthorized access and control over affected devices. The urgency for defenders is moderate, and it is advisable to schedule remediation as part of the patch management process.
The exploitability of this vulnerability is rated as medium, indicating that while it is known, the complexity of successfully executing the attack may vary. Therefore, organizations should remain vigilant and ensure their systems are updated to protect against this and similar vulnerabilities.
In summary, the D-Link DIR-823X firmware vulnerability represents a risk that could be exploited if not properly addressed, and organizations should take immediate action to assess their exposure and implement necessary updates.
Vulnerability Details
The D-Link DIR-823X firmware has a command injection vulnerability which can be exploited by manipulating the wd_enable parameter. This flaw allows an attacker to execute arbitrary commands on the affected device. The CVSS v4.0 score of 5.5 reflects the medium severity of this flaw, highlighting the need for prompt attention from security teams.
The vulnerability affects all versions of the D-Link DIR-823X firmware prior to the vendor's patch. Given the potential impacts, organizations should ensure they are running the latest firmware to mitigate risks associated with this vulnerability.
The vulnerability was published on January 18, 2026, and the last modification date was April 29, 2026. It is classified under CWE-74 (Injection) and CWE-77 (Command Injection), indicating the nature of the vulnerabilities that can be exploited.
Technical Analysis
The root cause of this vulnerability is improper validation of user input within the command processing function. Attackers may exploit this vulnerability by sending crafted requests that manipulate the wd_enable argument, leading to command execution on the device. The attack vector is through the network, with low complexity and no privileges required for exploitation, making it particularly concerning.
The attack requires no user interaction, which increases the likelihood of successful exploitation. The confidentiality, integrity, and availability impacts are assessed to be low; however, attackers gaining control of the device could potentially escalate their access further.
Risk & Impact Analysis
The real-world risk associated with this vulnerability includes unauthorized command execution on affected devices, which could lead to data breaches or further attacks on internal networks. The blast radius could be significant if exploited in environments with interconnected devices, allowing attackers to pivot to other systems.
Organizations should evaluate their exposure to this vulnerability, particularly those using D-Link devices. The urgency assessment indicates that while immediate patching is not critical, it should be prioritized in the next patch cycle to mitigate potential risks.
Signal | Status |
|---|---|
Known Exploit | No |
Public PoC | No |
Actively Exploited | No |
Ransomware Use | No |
Affected Versions
All versions of D-Link DIR-823X firmware prior to the vendor patch are affected. Specifically, the vulnerability pertains to firmware version 250416.
Mitigation & Remediation
Organizations should regularly update their D-Link DIR-823X firmware to the latest version provided by the vendor to mitigate this vulnerability. Details on the firmware updates should be available on the D-Link website. Additionally, organizations should implement network controls to limit access to the management interface of the device.
Detection Guidance
Security teams should monitor logs for unusual access patterns to the D-Link DIR-823X device, focusing on any attempts to manipulate the wd_enable parameter. Additionally, behavioral anomalies around device management should be investigated.
AppSecure Threat Intelligence Insight
The D-Link DIR-823X vulnerability serves as a reminder of the importance of secure coding practices. Organizations must prioritize timely updates and educate their teams on potential vulnerabilities within their technology stack. For further insights on managing vulnerabilities, refer to the vulnerability management program and the necessity of continuous security assessments, such as penetration testing, to identify and remediate weaknesses before they can be exploited.
Ultimately, security teams should remain vigilant and proactive in managing vulnerabilities like CVE-2026-1125 to safeguard their infrastructure.
Disclaimer: This content was generated using AI. While we strive for accuracy, please verify critical information with official sources.
.webp)