CVE-2025-20762 MediaTek, Inc. CVE debrief

Who should care

Defenders responsible for Mediatek-based systems, especially those with connectivity to untrusted networks, should assess exposure and prioritize patching or mitigation efforts. This includes operators, platform administrators, vulnerability management teams, and security teams who need to review compensating controls for exposed systems while remediation is scheduled and verified.

Why it matters

CVE-2025-20762 is a medium-severity vulnerability in Mediatek's Modem component that could lead to remote denial of service. Defenders should assess exposure, prioritize patching, and implement compensating controls.

• Potential remote denial of service requires verification of Mediatek Modem component exposure
• Defenders must assess and prioritize patching or mitigation for affected systems
• Verification of system crash conditions and potential workarounds is necessary

Technical summary

CVE-2025-20762 is a vulnerability in Mediatek's Modem component that could lead to a system crash due to incorrect error handling. This issue can be exploited remotely if a device connects to a rogue base station controlled by an attacker, potentially resulting in denial of service. The vulnerability has been patched with MOLY01685181 and requires no additional execution privileges or user interaction for exploitation. Defenders should prioritize verifying exposure of Mediatek-based systems, especially those with connectivity to untrusted networks, and apply patches or mitigations as available.

Defensive priority

Defenders should prioritize verifying exposure of Mediatek-based systems, especially those with connectivity to untrusted networks, and apply patches or mitigations as available.

Recommended defensive actions

• Verify and apply the patch (MOLY01685181) to Mediatek Modem components
• Assess exposure of Mediatek-based systems, especially those with connectivity to untrusted networks
• Implement compensating controls such as network monitoring for suspicious base station activity
• Review relevant monitoring, detection, and logs for exposed assets that need extra review
• Track exceptions, retest remediated assets, and close the item only after evidence is documented
• Confirm whether affected product deployments exist in managed environments and assign an owner for follow-up
• Plan vendor-supported updates or mitigations through normal change control where exposure is confirmed

Evidence notes

The CVE record and Mediatek's security bulletin provide details on the vulnerability. However, specific affected versions and detailed exploitation scenarios are not provided, limiting the ability to assess full impact.

Sources and references

Methodology and review provenance

AI-assisted synthesis based on stored public vulnerability evidence. System validation, approval state, and publication status do not by themselves establish human review of this revision. PatchSiren helps prioritize defensive review and does not prove exposure or remediation on any system.