SB2025083025 - Multiple vulnerabilities in Lenovo Mediatek tablets

Description

This security bulletin contains information about 4 secuirty vulnerabilities.

1) Out-of-bounds write (CVE-ID: CVE-2025-20634)

The vulnerability allows a remote attacker to execute arbitrary code.

The vulnerability exists due to a missing bounds check within Modem. A remote attacker can trick the victim to open a specially crafted file and execute arbitrary code.

2) Out-of-bounds write (CVE-ID: CVE-2025-20696)

The vulnerability allows a local application to escalate privileges on the system.

The vulnerability exists due to a boundary error within the DA component. A local application can trigger an out-of-bounds write and execute arbitrary code on the target system.

3) Out-of-bounds write (CVE-ID: CVE-2025-20697)

The vulnerability allows a local application to escalate privileges on the system.

The vulnerability exists due to a boundary error within the Power HAL component. A local application can trigger an out-of-bounds write and execute arbitrary code on the target system.

4) Out-of-bounds write (CVE-ID: CVE-2025-20698)

The vulnerability allows a local application to escalate privileges on the system.

The vulnerability exists due to a boundary error within the Power HAL component. A local application can trigger an out-of-bounds write and execute arbitrary code on the target system.

Remediation

Cybersecurity Help is not aware of any official remediation provided by the vendor.

References

• https://support.lenovo.com/us/en/product_security/LEN-199241