CVE-2025-20633 is a high-severity vulnerability affecting the Mediatek Software Development Kit. This vulnerability allows for a possible out-of-bounds write due to an incorrect bounds check in the WLAN AP driver. The CVSS score for this vulnerability is 8.8, indicating a significant risk. The potential impact of this vulnerability includes remote (proximal/adjacent) code execution without the need for additional execution privileges, and user interaction is not required for exploitation.
Risk to organizations includes unauthorized access to systems and potential data compromise. Organizations should prioritize patching immediately to prevent exploitation of this vulnerability. As of now, no public exploits have been confirmed, but the vulnerability's characteristics suggest that it could be leveraged by attackers.
The vulnerability was published on February 3, 2025, and has been classified under CWE-787, indicating that it involves an out-of-bounds write. The urgency for defenders is high, given the potential for significant impact if this vulnerability is exploited.
Organizations utilizing the Mediatek Software Development Kit must take immediate action to assess their systems for this vulnerability and apply the necessary patches.
Vulnerability Details
The official description states that in the WLAN AP driver, there is a possible out-of-bounds write due to an incorrect bounds check. This could lead to remote (proximal/adjacent) code execution with no additional execution privileges needed. The patch ID associated with this vulnerability is WCNCR00400889, and the issue ID is MSV-2491.
The CVSS score of 8.8 indicates a high severity level, with the attack vector identified as adjacent network. The attack complexity is low, meaning that an attacker may exploit this vulnerability with minimal effort. No privileges are required for exploitation, and user interaction is not necessary. The impacts on confidentiality, integrity, and availability are all rated as high.
Affected products include the Mediatek Software Development Kit, specifically versions up to 7.4.0.1. It is crucial for organizations to identify if they are using vulnerable versions and take corrective actions.
Technical Analysis
The root cause of this vulnerability is an incorrect bounds check within the WLAN AP driver, which allows for potential out-of-bounds writes. This flaw can lead to arbitrary code execution, making it critical for systems utilizing this driver to implement stringent validation checks.
The attack vector is adjacent network, meaning that an attacker must be on the same network as the vulnerable device to exploit this vulnerability. The attack complexity is low, allowing attackers to potentially execute malicious code with minimal effort. No privileges are required, and no user interaction is necessary.
The impacts of this vulnerability are significant, affecting confidentiality, integrity, and availability. A successful exploit could lead to complete system compromise, making it essential for organizations to address this vulnerability without delay.
Risk & Impact Analysis
Organizations using the Mediatek Software Development Kit face considerable risk due to the potential for remote code execution. This vulnerability could be exploited by attackers to gain unauthorized access to sensitive information or to disrupt services. Given the severity rating of 8.8, the urgency for remediation is critical.
The blast radius for this vulnerability is extensive, impacting any organization that utilizes affected versions of the software development kit. Organizations should assess their exposure and prioritize remediation efforts accordingly. The EPSS score of 0.0023 indicates a relatively low probability of exploitation compared to other vulnerabilities, but the potential impact remains high.
Organizations should address this vulnerability in their priority patch cycle. Failure to do so could lead to significant repercussions, including loss of data integrity and availability.
Exploitation Status
Signal | Status |
|---|---|
Known Exploit | No |
Public PoC | No |
Actively Exploited | No |
Ransomware Use | No |
Affected Versions
The vulnerability affects all versions of the Mediatek Software Development Kit prior to version 7.4.0.1. Organizations should check their use of the SDK and apply the necessary patches to mitigate risks.
Mitigation & Remediation
To mitigate this vulnerability, organizations should apply the available patches provided by Mediatek. Upgrading to version 7.4.0.1 or later is crucial. If patches are not available, organizations should consider implementing configuration hardening measures and network controls to limit exposure.
Organizations should also monitor their systems for any signs of exploitation and assess their security posture regularly. For further guidance on security best practices, refer to our comprehensive penetration testing services that can help identify vulnerabilities.
Detection Guidance
Organizations should implement logging and monitoring to detect any unusual activities associated with this vulnerability. Key indicators include abnormal code execution patterns, unexpected system behaviors, and unauthorized access attempts.
Behavioral anomalies within the WLAN AP driver should be closely monitored. Alerts should be configured for any suspicious activities that may indicate an attempted exploitation of this vulnerability.
AppSecure Threat Intelligence Insight
CVE-2025-20633 serves as a reminder of the critical need for robust software validation processes. This vulnerability highlights the risks associated with inadequate bounds checking, which can lead to severe security issues. The trend of vulnerabilities related to memory management continues to be a significant concern.
Security teams should focus on implementing comprehensive testing methodologies and regular security audits to identify similar weaknesses in their systems. For more detailed insights into vulnerability management, refer to our article on vulnerability management programs and consider integrating continuous security assessments into their development lifecycle.
Additionally, organizations should remain vigilant against evolving threats by using resources such as our guide on penetration testing methodology to ensure their defenses are aligned with current best practices.
Lastly, organizations should consider adopting frameworks that facilitate proactive security measures, such as our VAPT testing services to further enhance their security posture.
Disclaimer: This content was generated using AI. While we strive for accuracy, please verify critical information with official sources.
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