On April 8, 2026, a high-severity vulnerability was disclosed affecting the D-Link DI-8300 firmware version 16.07.26A1. This vulnerability allows attackers to exploit a buffer overflow via the 'fx' parameter in the 'jingx_asp' function. The implications of this flaw are significant, as it can lead to a Denial of Service (DoS), impacting the availability of the affected device.
With a CVSS base score of 7.5, this vulnerability is classified as high. The attack vector is network-based, requiring low complexity with no privileges or user interaction needed for exploitation. Therefore, the risk to organizations includes potential downtime and disruption of services, which can have serious operational impacts.
Currently, there is no public exploit available, and the vulnerability is not listed in the Known Exploited Vulnerabilities (KEV) catalog. However, organizations should prioritize patching immediately to mitigate the risk associated with this vulnerability.
Given the potential impact and the ease of exploitation, organizations operating D-Link DI-8300 firmware should take this vulnerability seriously and implement the necessary updates as soon as they are available.
Vulnerability Details
The vulnerability identified as CVE-2025-45058 is characterized by a buffer overflow in the D-Link DI-8300 firmware version 16.07.26A1. This vulnerability allows attackers to cause a Denial of Service (DoS) via a crafted input. According to the official description, the vulnerability could potentially lead to an unresponsive state of the device.
The CVSS score for this vulnerability is 7.5, indicating a high severity level. The analysis reveals that the attack vector is network-based, and the attack complexity is low, meaning that an attacker could exploit this vulnerability without needing special conditions. Privilege requirements are non-existent, and user interaction is not necessary, which further exacerbates the risk.
The vulnerability falls under CWE-120, which pertains to buffer copy without checking the size of the input. Organizations should be aware of this classification as it relates to common coding errors that can lead to security vulnerabilities.
Technical Analysis
Root cause analysis of CVE-2025-45058 indicates that improper validation of user input in the 'jingx_asp' function leads to a buffer overflow. This vulnerability can be exploited over a network, and given its low complexity, attackers have a higher chance of successfully executing an attack.
The attack complexity is categorized as low, meaning that an attacker does not require advanced skills to exploit this vulnerability. No privileges are required to initiate the attack, and user interaction is not necessary. As a result, any unauthenticated user could potentially trigger the overflow.
The availability impact is rated as high since the resulting buffer overflow can render the device unresponsive, effectively denying service to legitimate users. Confidentiality and integrity impacts are rated as none, indicating that the vulnerability does not directly compromise sensitive information.
Risk & Impact Analysis
Organizations that utilize D-Link DI-8300 firmware are at substantial risk due to the potential for service disruption. The lack of required privileges and user interaction makes this vulnerability particularly threatening, as it broadens the pool of potential attackers to anyone with network access.
The impact on organizational operations can be severe, leading to downtime, loss of productivity, and potential fines if service level agreements are violated. Organizations should also consider the reputational damage that may arise from such outages.
With a CVSS score of 7.5, it is classified as high severity, implying that organizations should address this vulnerability in their priority patch cycle. Additionally, the exploitation potential, while currently low due to lack of known exploits, should not lead to complacency. Attackers may develop methods to exploit this vulnerability in the future.
Signal | Status |
|---|---|
Known Exploit | No |
Public PoC | No |
Actively Exploited | No |
Ransomware Use | No |
Affected Versions
The affected product is the D-Link DI-8300 firmware, specifically version 16.07.26A1. If there is no version information available, it is essential to consider that all versions prior to the vendor patch may be impacted.
Mitigation & Remediation
Organizations should prioritize applying patches provided by D-Link for the DI-8300 firmware. If the patch is not available, they should consider implementing network controls to limit exposure to the vulnerability and monitor the devices for unusual activity.
For further guidance on securing devices and ensuring compliance with security best practices, organizations may consider engaging in penetration testing services.
Detection Guidance
To detect potential exploitation attempts, organizations should monitor logs for any unexpected reboots or service interruptions. Additionally, network traffic patterns should be analyzed for unusual spikes that could indicate a DoS attack.
AppSecure Threat Intelligence Insight
The disclosure of CVE-2025-45058 highlights the ongoing need for vigilance in network device security. The trend of vulnerabilities leading to Denial of Service attacks emphasizes the importance of secure coding practices. Organizations should prioritize regular security assessments and consider penetration testing methodology to identify and mitigate potential weaknesses.
Furthermore, engaging in a well-structured vulnerability management program can help organizations proactively address and remediate vulnerabilities.
Finally, organizations should stay informed on emerging security threats and trends through resources like the 2025 Vulnerability Exposure Severity Trends report.
Disclaimer: This content was generated using AI. While we strive for accuracy, please verify critical information with official sources.
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