CVE-2025-25900 describes a buffer overflow vulnerability in the TP-Link TL-WR841ND V11 firmware. This vulnerability allows attackers to exploit the username and password parameters at /userRpm/PPPoEv6CfgRpm.htm, potentially causing a Denial of Service (DoS). The vulnerability's CVSS score is 4.9, categorizing it as medium severity. This level of severity indicates that while exploitation is possible, it may require specific conditions or knowledge.
Risk to organizations includes service disruption due to the DoS caused by this vulnerability. Given the nature of the attack vector being network-based, it emphasizes the importance for organizations to secure their networked devices. Organizations should prioritize patching immediately to mitigate this risk.
As of now, there are no known public exploits for this vulnerability, making it potentially less urgent than others. However, the risk landscape can change, and vigilance is necessary.
Organizations using affected products should take immediate action to implement appropriate security measures.
Vulnerability Details
The vulnerability identified as CVE-2025-25900 is categorized under CWE-120, which pertains to buffer overflow vulnerabilities. The affected product is the TP-Link TL-WR841ND V11 firmware, which has a published date of February 13, 2025. The CVSS vector for this vulnerability is CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H, indicating that it is a network attack with low complexity and requires high privileges.
Technical Analysis
The root cause of CVE-2025-25900 stems from improper handling of user input, specifically the username and password parameters. Attackers may exploit this flaw remotely, allowing them to send crafted packets to the vulnerable firmware. The attack complexity is classified as low, indicating that it does not require sophisticated techniques to exploit. Additionally, the vulnerability requires high privileges and does not involve user interaction.
The impact on availability is high, as a successful exploit could lead to system crashes or service interruptions. However, confidentiality and integrity impacts are reported as none.
Risk & Impact Analysis
Organizations deploying the TP-Link TL-WR841ND V11 firmware face potential service disruptions due to the DoS vulnerability. The attack's network vector means that any device connected to the same network could be at risk. This incident highlights the importance of maintaining an updated firmware to reduce vulnerabilities, particularly those that could affect customer services.
Based on the CVSS score of 4.9, the urgency for organizations is categorized as medium. It is advisable to address this vulnerability during the next patch cycle but not as an immediate emergency.
Exploitation Status
Signal | Status |
|---|---|
Known Exploit | No |
Public PoC | No |
Actively Exploited | No |
Ransomware Use | No |
Affected Versions
The TP-Link TL-WR841ND V11 firmware is vulnerable. All versions prior to vendor patch are affected.
Mitigation & Remediation
Organizations should monitor for updates from TP-Link and apply firmware patches as soon as they are available. If a patch is not available, consider implementing network segmentation to limit exposure and improve security. Additionally, organizations can enhance router configurations and employ logging mechanisms to identify any unusual behavior.
Detection Guidance
Logging attempts to exploit the buffer overflow vulnerability can be instrumental. Organizations should look for repeated failed login attempts or unusual traffic patterns directed at the router's web interface. Monitoring for Denial of Service events will also aid in identifying exploitation attempts.
AppSecure Threat Intelligence Insight
CVE-2025-25900 highlights the ongoing need for organizations to maintain robust security practices around network devices. Continuous monitoring and timely application of patches are critical in minimizing potential threats. For further reading on security assessments, organizations may refer to the application security assessment and penetration testing services offered by AppSecure. Understanding these services can provide valuable insights for enhancing overall security posture.
The low EPSS score reflects the current low likelihood of exploitation, but vigilance remains necessary. Organizations should also consider reviewing their security policies based on emerging trends in vulnerabilities, such as those discussed in the 2025 vulnerability exposure severity trends to adapt their strategies accordingly.
Disclaimer: This content was generated using AI. While we strive for accuracy, please verify critical information with official sources.
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