CVE-2025-22916 describes a critical stack overflow vulnerability identified in Edimax RE11S firmware version 1.11. This vulnerability allows attackers to exploit the pppUserName parameter within the formPPPoESetup function. With a CVSS base score of 9.8, organizations utilizing this firmware are at significant risk due to the potential for unauthorized access and manipulation of sensitive data.
This vulnerability allows for high impact on confidentiality, integrity, and availability, highlighting its critical nature. The attack vector is classified as network-based, and no user interaction is required, which makes it particularly dangerous. Organizations must prioritize remediation efforts to address this issue.
Given the potential for exploitation and the critical nature of the vulnerability, organizations should act swiftly to patch affected systems or implement mitigation strategies. The urgency for defenders is high, as attackers may leverage this vulnerability to gain unauthorized access.
For more information on the vulnerability, refer to the official documentation provided by Edimax and relevant security advisories.
Vulnerability Details
The vulnerability affects Edimax RE11S firmware version 1.11, allowing a stack overflow through the pppUserName parameter in the formPPPoESetup function. The CVSS score is 9.8, indicating a critical vulnerability that requires immediate attention. The vulnerability has been classified under CWE-120, which relates to stack-based buffer overflow vulnerabilities.
Technical Analysis
The root cause of this vulnerability stems from improper handling of user input, specifically the pppUserName parameter, which can lead to a stack overflow condition. The attack vector is network-based, and due to the low attack complexity, any unauthenticated attacker can exploit the vulnerability without requiring user interaction.
The required privileges for exploitation are none, further increasing the risk. The vulnerability impacts confidentiality, integrity, and availability, as malicious actors could manipulate system states or gain unauthorized access to sensitive information.
Risk & Impact Analysis
Risk to organizations includes potential data breaches, unauthorized access, and service disruptions. Given the criticality of the vulnerability and its potential impacts, organizations should assess their exposure and implement remediation strategies as part of their risk management practices.
The urgency for patching is critical, as attackers may actively exploit this vulnerability to gain footholds within networks. Organizations must prioritize remediation efforts to safeguard their environments against potential exploitation.
Exploitation Status
Signal | Status |
|---|---|
Known Exploit | Yes |
Public PoC | Yes |
Actively Exploited | No |
Ransomware Use | No |
Affected Versions
The affected version is Edimax RE11S firmware version 1.11. Organizations should consider all versions prior to vendor patch as potentially vulnerable.
Mitigation & Remediation
Organizations should prioritize patching the Edimax RE11S firmware to the latest version to mitigate this vulnerability. If a patch is not immediately available, consider implementing network controls to restrict access to the vulnerable service. Additionally, monitoring for any anomalous behavior in network traffic may help in identifying potential exploitation attempts.
For further assistance, organizations may want to consider engaging in penetration testing to validate the effectiveness of their remediation efforts.
Detection Guidance
Monitoring logs for indicators of exploitation, such as unusual access patterns or unexpected service disruptions, can help detect attempts to exploit this vulnerability. It is also advisable to review system changes and ensure that configurations are consistent with security best practices.
AppSecure Threat Intelligence Insight
The long-term significance of CVE-2025-22916 lies in its demonstration of how critical vulnerabilities can arise from inadequate input validation in networking equipment. This case represents a pattern that security teams should recognize, emphasizing the importance of rigorous security testing during firmware development.
Organizations are encouraged to adopt a proactive approach towards vulnerability management by regularly reviewing their systems for similar weaknesses. Engaging in comprehensive vulnerability management programs can help mitigate risks associated with such vulnerabilities.
To deepen understanding of potential exploitation techniques, security teams should familiarize themselves with penetration testing methodologies and continuously improve their security posture.
Finally, organizations should consider the integration of best practices in security testing to ensure they remain resilient against emerging threats.
Disclaimer: This content was generated using AI. While we strive for accuracy, please verify critical information with official sources.
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