Improper Validation of Specified Type of Input in MediaTek products - CVE-2025-20756

Vulnerability identifier: #VU118887

CSH Severity: Low

CVSS v4: 8.5 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N]

CVE-ID: CVE-2025-20756

CWE-ID: CWE-1287

Exploitation vector: Local access

Exploit availability: No public exploit available

The vulnerability allows a local application to execute arbitrary code.

The vulnerability exists due to a logic error within Modem. A local application can execute arbitrary code.

MT8792
MT8673
MT8675
MT8676
MT8678
MT8755
MT8771
MT8791
MT8791T
MT8793
MT8795T
MT8798
MT8863
MT8873
MT8883
MT8893
MT6875T
MT6833
MT6833P
MT6855
MT6855T
MT2735
MT6877T
MT6877TT
MT6880
MT6890
MT6893
MT6891
MT8797
MT6853
MT6853T
MT6873
MT6875
MT6877
MT6883
MT6885
MT6889
TB373FU Lenovo Idea Tab Pro
TB336FU/TB336ZU Lenovo Idea Tab/ Lenovo Tab K11 Gen 2
TB570FU, TB570ZU Lenovo Tab Extreme
TB350FU, TB350XU Lenovo Tab P11 2nd
TB350FU, TB350XU Lenovo Tab P11 Gen
TB351FU Lenovo Tab Plus
TB311FU/TB311XU Lenovo Tab with Clear Case/ Lenovo Tab with Folio Case
Lenovo Idea Tab Pro (TB373FU)
Lenovo Idea Tab/ Lenovo Tab K11 Gen 2 (TB336FU/TB336ZU)
Lenovo Tab Extreme (TB570ZU/TB570FU)
Lenovo Tab P11 2nd Gen (TB350XU / TB350FU)
Lenovo Tab Plus (TB351FU)
Lenovo Tab with Clear Case/ Lenovo Tab with Folio Case (TB311FU/TB311XU)

Install security update from vendor's website.

• https://corp.mediatek.com/product-security-bulletin/December-2025

• Multiple vulnerabilities in MediaTek chipsets
• Multiple vulnerabilities in Lenovo Mediatek tablets