A vulnerability was identified in D-Link DIR-825 3.00b32. This affects the function NMBD_process of the file sserver.c of the component nmbd. Such manipulation leads to buffer overflow. The attack can only be initiated within the local network. The exploit is publicly available and might be used. This vulnerability only affects products that are no longer supported by the maintainer.
The severity level of this vulnerability is high, with a CVSS score of 8.7. This indicates a significant risk to organizations, especially those operating in environments where the affected devices are still in use.
Risk to organizations includes potential for unauthorized access and data manipulation due to the buffer overflow. Attackers may leverage this vulnerability to exploit affected devices within the local network, leading to compromised system integrity and availability.
Organizations should prioritize patching immediately. Given the publicly available exploit, the urgency to remediate this vulnerability cannot be overstated.
Vulnerability Details
A vulnerability was identified in D-Link DIR-825 3.00b32. This vulnerability allows manipulation of the function NMBD_process in the file sserver.c of the nmbd component, leading to a buffer overflow. The attack can only be initiated within the local network. The exploit is publicly available and might be used. This vulnerability affects only products that are no longer supported by the maintainer.
The vulnerability has a CVSS score of 8.7, classifying it as high severity. The attack vector is adjacent, meaning that exploitation requires access to the local network. The attack complexity is low, and no privileges or user interaction are required to exploit this vulnerability.
The publication date for this vulnerability is April 27, 2026. The vulnerability is classified under CWE-119 (Improper Restriction of Operations within the Bounds of a Memory Buffer) and CWE-120 (Buffer Copy without Checking Size of Input).
Technical Analysis
The root cause of this vulnerability lies in the improper handling of input data within the NMBD_process function. Specifically, insufficient validation of buffer sizes allows for overflow conditions, leading to potential arbitrary code execution.
The attack vector is local, requiring the attacker to be on the same network as the vulnerable device. The attack complexity is rated as low, as it does not require any specialized skills or knowledge beyond access to the local network.
No privileges are required for an attacker to initiate the exploit, and no user interaction is needed. If exploited, the vulnerability impacts the confidentiality, integrity, and availability of the affected system.
Risk & Impact Analysis
The risk to organizations includes unauthorized access, data manipulation, and potential service disruption. The blast radius of this vulnerability can be significant, especially in environments where D-Link DIR-825 devices are deployed in critical network segments.
Due to the high CVSS score and the nature of the vulnerability, organizations should address this in their priority patch cycle. The urgency is underscored by the potential for exploitation in a local network environment.
Signal | Status |
|---|---|
Known Exploit | Yes |
Public PoC | Yes |
Actively Exploited | No |
Ransomware Use | No |
Affected Versions
This vulnerability affects D-Link DIR-825 version 3.00b32. All versions prior to vendor patch are also potentially impacted.
Mitigation & Remediation
Organizations should prioritize patching immediately. Updating to the latest firmware provided by D-Link is essential to mitigate this vulnerability effectively.
If a patch is unavailable, organizations should implement network controls to restrict access to the affected devices. Regular monitoring of network traffic for anomalies may also help in identifying potential exploitation attempts.
For further guidance, organizations can refer to our penetration testing services to validate the security of their network.
Detection Guidance
Monitoring logs for unusual behavior related to the nmbd service can help in early detection of attempted exploitation. Specific indicators to watch for include unexpected memory usage, crashes of the nmbd service, and unusual network traffic originating from devices running the vulnerable version.
AppSecure Threat Intelligence Insight
The long-term significance of this vulnerability highlights the need for organizations to maintain updated security measures, especially for devices that may have reached the end of vendor support. This vulnerability represents a growing trend where outdated devices remain in operational environments, creating potential attack vectors.
Security teams should focus on regular assessments and consider implementing a vulnerability management program to systematically address potential risks associated with aging infrastructure.
Moreover, engaging in penetration testing on a regular basis can help uncover similar vulnerabilities before they can be exploited.
In conclusion, organizations should prioritize addressing vulnerabilities such as CVE-2026-7068 to protect their networks and maintain overall security posture.
Disclaimer: This content was generated using AI. While we strive for accuracy, please verify critical information with official sources.
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