CVE-2025-20780

7.8

MediaTek · MediaTek chipset

A memory corruption vulnerability due to use after free in MediaTek display drivers may allow local privilege escalation.

Executive summary

A critical use after free vulnerability in various MediaTek chipsets could allow an attacker with System privileges to achieve further escalation.

Vulnerability

The vulnerability exists within the display component as a use after free condition (CWE-416). It requires the attacker to already possess System-level privileges to trigger the flaw for local privilege escalation, though no user interaction is required for the exploit to execute.

Business impact

The potential for privilege escalation poses a significant risk to the integrity and security of the affected devices. A successful exploit could allow a malicious actor to bypass security boundaries, potentially leading to unauthorized data access or complete compromise of the device environment. Given the CVSS score of 7.8, this is considered a high-severity issue that should be addressed as part of regular security maintenance cycles.

Remediation

Immediate Action: Apply the vendor-provided security updates associated with Patch ID ALPS10184061 as detailed in the January 2026 MediaTek security bulletin.

Proactive Monitoring: Monitor system logs for unusual crashes or instability within the display subsystem that may indicate attempted memory corruption.

Compensating Controls: Ensure that device security policies restrict the ability of low-privileged applications to interact with sensitive system-level processes.

Exploitation status

Public Exploit Available: No

Analyst recommendation

While this vulnerability requires a high level of pre-existing access, it represents a clear path for escalation that could undermine the entire device security model. Organizations utilizing hardware equipped with the affected MediaTek chipsets must prioritize the deployment of the official patch to prevent attackers from strengthening their foothold on compromised systems.

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Sources