CVE-2025-20802 MediaTek, Inc. CVE debrief

Who should care

Defenders responsible for Mediatek device security, particularly those with System privilege access, should assess exposure and apply patches. This includes security teams and operators managing Mediatek devices, as well as vulnerability management teams responsible for tracking and remediating vulnerabilities in their environment. They should review the supplied official advisory or CVE record to validate affected scope, severity, and vendor guidance. It

Why it matters

CVE-2025-20802 is a MEDIUM-severity vulnerability in Mediatek's geniezone component, allowing local escalation of privilege. Defenders should assess exposure, apply patches, and monitor for potential exploitation attempts.

• Local privilege escalation risk for Mediatek devices
• Potential for malicious actors to gain elevated privileges
• Need for patch application and exposure assessment

Technical summary

The geniezone component in Mediatek devices has a use-after-free vulnerability, potentially leading to local escalation of privilege if a malicious actor has System privilege. No user interaction is required for exploitation. This issue, tracked as CVE-2025-20802, has been assigned a CVSS score of 6.7 and a severity of MEDIUM. The vulnerability could allow local escalation of privilege if a malicious actor has already obtained the System privilege. User interaction is not needed for exploitation. Patch ID: ALPS10238968; Issue ID: MSV-4914.

Defensive priority

Assess exposure and apply patches for Mediatek devices with System privilege access.

Recommended defensive actions

• Assess exposure of Mediatek devices with System privilege access
• Apply patches from Mediatek's security bulletin
• Monitor for local privilege escalation attempts
• Review compensating controls for exposed systems while remediation is scheduled and verified
• Check 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

Evidence notes

The CVE record and NVD entry provide details on the vulnerability. Mediatek has released a security bulletin addressing this issue. The vulnerability exists in the geniezone component of Mediatek devices, potentially allowing local escalation of privilege if a malicious actor has System privilege. No user interaction is required for exploitation. Evidence is limited to CVE and NVD details.

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.