Reachable Assertion in MediaTek products - CVE-2025-20752

Vulnerability identifier: #VU118888

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-2025-20752

CWE-ID: CWE-617

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 missing bounds check within Modem. A local application can execute arbitrary code.

MT6980D
MT6886
MT6890
MT6895
MT6895TT
MT6896
MT6897
MT6899
MT6980
MT6983
MT6983T
MT6985
MT6985T
MT6989
MT6989T
MT6990
MT6991
MT8676
MT8791T
MT2737
MT6813
MT6833
MT6833P
MT6835
MT6835T
MT6855
MT6855T
MT2735
MT6875T
MT6877T
MT6877TT
MT6878
MT6878M
MT6879
MT6880
MT6889
MT6891
MT6893
MT6885
MT6873
MT6853
MT6853T
MT6875
MT6877
MT6883
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