A buffer overflow vulnerability was discovered in D-Link DSL-3782 v1.01 via the destination, netmask, and gateway parameters. This vulnerability allows attackers to cause a Denial of Service (DoS) via a crafted packet.
This vulnerability has a CVSS score of 5.7, indicating a medium severity level. The potential impact includes service disruption, making it essential for organizations using this device to address it promptly.
Risk to organizations includes service outages that could result from successful exploitation. While the vulnerability is not currently known to be exploited in the wild, the availability impact is rated as high.
Organizations should prioritize patching immediately to mitigate this risk and ensure the integrity of their network services.
Vulnerability Details
The vulnerability, classified under CWE-121, is characterized as a buffer overflow. It affects D-Link DSL-3782 firmware version 1.01, allowing attackers to disrupt service by sending specially crafted packets.
The CVSS score of 5.7 indicates a medium severity, with the attack vector being adjacent network, and low complexity required for exploitation. No user interaction is needed, and it requires low privileges.
The vulnerability was published on February 18, 2025, and organizations using affected versions should apply patches as soon as they are available.
Technical Analysis
The root cause of this vulnerability lies in insufficient validation of input parameters, specifically destination, netmask, and gateway. Attackers may leverage this to send malicious packets that trigger the buffer overflow.
The attack vector is classified as adjacent network, indicating that the attacker must be on the same local network as the victim. The attack complexity is low, requiring minimal effort to exploit.
No user interaction is required to exploit this vulnerability, making it particularly concerning for organizations. The confidentiality and integrity impacts are negligible, but the availability impact is rated high, potentially leading to significant service disruptions.
Risk & Impact Analysis
Organizations deploying D-Link DSL-3782 firmware are at risk of service outages due to this vulnerability. The exploit's low complexity and the requirement for low privileges mean that attackers with basic network access can potentially disrupt services.
Given the high availability impact, the urgency for organizations to patch this vulnerability is critical. The potential blast radius includes all devices on the same local network, making this a significant issue for network administrators.
Organizations should address this vulnerability in their priority patch cycle to prevent unauthorized disruptions and maintain operational continuity.
Exploitation Status
Signal | Status |
|---|---|
Known Exploit | No |
Public PoC | No |
Actively Exploited | No |
Ransomware Use | No |
Affected Versions
The affected version is D-Link DSL-3782 firmware version 1.01. Organizations using this version should upgrade to the latest version available from the vendor.
Mitigation & Remediation
To mitigate this vulnerability, organizations should apply the latest firmware updates provided by D-Link. If patches are not yet available, consider implementing network controls to restrict access to the affected device.
Organizations may also benefit from conducting regular penetration testing to identify and remediate vulnerabilities in their network devices. For more information on penetration testing, organizations should consider leveraging penetration testing services to assess their security posture.
Detection Guidance
Organizations should monitor logs for unusual traffic patterns that may indicate attempts to exploit this vulnerability. Behavioral anomalies in network traffic, specifically targeting the D-Link DSL-3782 device, should be investigated.
Additionally, monitoring for changes in service availability can provide early indicators of exploitation attempts.
AppSecure Threat Intelligence Insight
The discovery of this vulnerability highlights the ongoing need for organizations to prioritize the security of their network infrastructure. As vulnerabilities like CVE-2025-25896 emerge, they serve as a reminder of the importance of regular security assessments and timely patch management.
Security teams should analyze their deployment strategies and consider adopting a proactive approach to vulnerability management. For insights into vulnerability management, organizations can refer to vulnerability management programs that help in identifying and mitigating such risks.
Additionally, organizations should stay informed about ongoing trends in vulnerabilities to improve their defensive posture. For detailed analysis, resources like 2025 vulnerability exposure trends can provide valuable insights.
Disclaimer: This content was generated using AI. While we strive for accuracy, please verify critical information with official sources.
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