CVE-2025-25662 is a critical vulnerability affecting Tenda O4 V3.0 V1.0.0.10(2936), which allows for a buffer overflow in the function SafeSetMacFilter. This vulnerability is exploited through the argument remark/type/time in the file /goform/setMacFilterList. With a CVSS score of 9.8, this vulnerability poses a significant risk to organizations.
The critical nature of this vulnerability is underscored by its potential impact. Attackers may leverage this flaw to execute arbitrary code, which can lead to unauthorized access and control over the affected system, compromising the integrity and availability of the network.
Given the exposure vector is network-based and requires no authentication, organizations should prioritize patching immediately to mitigate this risk. The urgency is heightened by the high impact on confidentiality, integrity, and availability.
Currently, there are no known exploits in the wild, but vigilance is necessary as the severity of this vulnerability may attract potential adversaries. Organizations should be proactive in their response to this threat.
Vulnerability Details
The vulnerability, identified as CWE-120, indicates a buffer overflow issue, which can be categorized as a critical security flaw. The CVSS score of 9.8 highlights the high severity of this vulnerability, with an attack vector classified as NETWORK. The vulnerability affects the Tenda O4 firmware version 1.0.0.10(2936).
The specific function that is vulnerable is SafeSetMacFilter, which improperly handles input, leading to potential buffer overflow. Organizations utilizing the affected firmware should take immediate action to update to the latest version.
Technical Analysis
The root cause of CVE-2025-25662 lies in improper input validation in the SafeSetMacFilter function. This oversight allows for a buffer overflow, which can be exploited by sending crafted inputs via the affected endpoint.
The attack vector is network-based, meaning that an attacker does not need physical access to exploit this vulnerability. The complexity of the attack is low, and no privileges are required to execute the exploit. Furthermore, user interaction is not needed, making this vulnerability particularly dangerous.
The potential impacts of this vulnerability are significant: it could lead to high confidentiality, integrity, and availability impacts. Organizations should assess their exposure to this risk and implement necessary controls to limit potential exploitation.
Risk & Impact Analysis
Risk to organizations includes unauthorized access and control over network devices, which can lead to significant data breaches and operational disruptions. The blast radius could be extensive, affecting not only the vulnerable device but also interconnected systems and networks.
Given the CVSS score of 9.8, this vulnerability is classified as critical, necessitating immediate attention. Organizations should prioritize remediation efforts to mitigate potential exploitation.
Signal | Status |
|---|---|
Known Exploit | No |
Public PoC | No |
Actively Exploited | No |
Ransomware Use | No |
Affected Versions
The specific vulnerable version of the Tenda O4 firmware is 1.0.0.10(2936). Organizations should ensure they are using versions that have been patched to mitigate this vulnerability.
Mitigation & Remediation
To mitigate this vulnerability, organizations should implement the following actions:
1. **Patch/Update**: Update to the latest version of the Tenda O4 firmware to eliminate the vulnerability.
2. **Configuration Hardening**: Review and adjust configurations to restrict access to vulnerable functions.
3. **Network Controls**: Implement network segmentation and access controls to limit exposure.
4. **Monitoring Recommendations**: Regularly monitor network logs for unusual activities that could indicate an attempt to exploit this vulnerability.
For further assistance in validating remediation, organizations can consider engaging in penetration testing to ensure their systems are secure.
Detection Guidance
To detect potential exploitation of this vulnerability, organizations should monitor for signs such as log indicators of unexpected access attempts to the vulnerable endpoint, behavioral anomalies indicating unauthorized access, and network signatures related to known exploit patterns.
AppSecure Threat Intelligence Insight
The long-term significance of CVE-2025-25662 highlights the importance of robust input validation mechanisms in firmware development. Organizations must remain vigilant against similar vulnerabilities that can arise from inadequate handling of user inputs.
This incident underscores a pattern where network-accessible devices are targeted due to their potential for widespread impact. Security teams should take this as a lesson to prioritize firmware updates and comprehensive security testing of devices.
Ultimately, organizations must adopt a proactive security posture to address vulnerabilities effectively. For more insights into security best practices, consider reviewing our penetration testing methodology and other related resources.
Organizations should also be aware of the evolving threat landscape. As such, keeping abreast of security trends and updates is vital. For comprehensive assessments, our application security assessment services can provide valuable insights.
Lastly, organizations are encouraged to explore our offerings in red teaming to comprehensively evaluate their security posture against potential adversaries.
Disclaimer: This content was generated using AI. While we strive for accuracy, please verify critical information with official sources.
.webp)