Vulnerability Monitor

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CVE-2026-20433

In Modem, there is a possible out of bounds write due to a missing bounds check. This could lead to remote escalation of privilege, if a UE has connected to a rogue base station controlled by the attacker, with no additional execution privileges needed. User interaction is needed for exploitation. Patch ID: MOLY01088681; Issue ID: MSV-4460.

Security Impact Summary

This vulnerability carries a HIGH severity rating with a CVSS v3.1 score of 8.8, indicating it requires adjacent network access with relatively low complexity without requiring user interaction and does not require pre-existing privileges . The vulnerability impacts confidentiality (data exposure), integrity (unauthorized modifications), and availability (service disruption) for affected systems. Impacting 124 products from mediatek, from mediatek, from mediatek and 121 others, organizations running these solutions should prioritize assessment and patching.

Historical Context

Reported in 2026, this vulnerability emerged during an era marked by increased sophistication in supply chain attacks, cloud infrastructure vulnerabilities, and software-as-a-service (SaaS) security challenges. Security practices during this period emphasized zero-trust architectures, container security, and API protection.

Published

2026-04-07T04:17:12.830

Last Modified

2026-04-10T19:56:39.243

Status

Analyzed

Source

[email protected]

Severity

CVSSv3.1: 8.8 (HIGH)

Weaknesses
  • Type: Secondary
    CWE-787
  • Type: Secondary
    CWE-787
Affected Vendors & Products
Type Vendor Product Version/Range Vulnerable?
Operating System mediatek mt2735_firmware - Yes
Hardware mediatek mt2735 - No
Operating System mediatek mt2737_firmware - Yes
Hardware mediatek mt2737 - No
Operating System mediatek mt6813_firmware - Yes
Hardware mediatek mt6813 - No
Operating System mediatek mt6833_firmware - Yes
Hardware mediatek mt6833 - No
Operating System mediatek mt6833p_firmware - Yes
Hardware mediatek mt6833p - No
Operating System mediatek mt6835_firmware - Yes
Hardware mediatek mt6835 - No
Operating System mediatek mt6835t_firmware - Yes
Hardware mediatek mt6835t - No
Operating System mediatek mt6853_firmware - Yes
Hardware mediatek mt6853 - No
Operating System mediatek mt6853t_firmware - Yes
Hardware mediatek mt6853t - No
Operating System mediatek mt6855_firmware - Yes
Hardware mediatek mt6855 - No
Operating System mediatek mt6855t_firmware - Yes
Hardware mediatek mt6855t - No
Operating System mediatek mt6873_firmware - Yes
Hardware mediatek mt6873 - No
Operating System mediatek mt6875_firmware - Yes
Hardware mediatek mt6875 - No
Operating System mediatek mt6875t_firmware - Yes
Hardware mediatek mt6875t - No
Operating System mediatek mt6877_firmware - Yes
Hardware mediatek mt6877 - No
Operating System mediatek mt6877t_firmware - Yes
Hardware mediatek mt6877t - No
Operating System mediatek mt6877tt_firmware - Yes
Hardware mediatek mt6877tt - No
Operating System mediatek mt6878_firmware - Yes
Hardware mediatek mt6878 - No
Operating System mediatek mt6878m_firmware - Yes
Hardware mediatek mt6878m - No
Operating System mediatek mt6879_firmware - Yes
Hardware mediatek mt6879 - No
Operating System mediatek mt6880_firmware - Yes
Hardware mediatek mt6880 - No
Operating System mediatek mt6883_firmware - Yes
Hardware mediatek mt6883 - No
Operating System mediatek mt6885_firmware - Yes
Hardware mediatek mt6885 - No
Operating System mediatek mt6886_firmware - Yes
Hardware mediatek mt6886 - No
Operating System mediatek mt6889_firmware - Yes
Hardware mediatek mt6889 - No
Operating System mediatek mt6890_firmware - Yes
Hardware mediatek mt6890 - No
Operating System mediatek mt6891_firmware - Yes
Hardware mediatek mt6891 - No
Operating System mediatek mt6893_firmware - Yes
Hardware mediatek mt6893 - No
Operating System mediatek mt6895_firmware - Yes
Hardware mediatek mt6895 - No
Operating System mediatek mt6895tt_firmware - Yes
Hardware mediatek mt6895tt - No
Operating System mediatek mt6896_firmware - Yes
Hardware mediatek mt6896 - No
Operating System mediatek mt6897_firmware - Yes
Hardware mediatek mt6897 - No
Operating System mediatek mt6899_firmware - Yes
Hardware mediatek mt6899 - No
Operating System mediatek mt6980_firmware - Yes
Hardware mediatek mt6980 - No
Operating System mediatek mt6980d_firmware - Yes
Hardware mediatek mt6980d - No
Operating System mediatek mt6983_firmware - Yes
Hardware mediatek mt6983 - No
Operating System mediatek mt6983t_firmware - Yes
Hardware mediatek mt6983t - No
Operating System mediatek mt6985_firmware - Yes
Hardware mediatek mt6985 - No
Operating System mediatek mt6985t_firmware - Yes
Hardware mediatek mt6985t - No
Operating System mediatek mt6989_firmware - Yes
Hardware mediatek mt6989 - No
Operating System mediatek mt6989t_firmware - Yes
Hardware mediatek mt6989t - No
Operating System mediatek mt6990_firmware - Yes
Hardware mediatek mt6990 - No
Operating System mediatek mt6991_firmware - Yes
Hardware mediatek mt6991 - No
Operating System mediatek mt8668_firmware - Yes
Hardware mediatek mt8668 - No
Operating System mediatek mt8673_firmware - Yes
Hardware mediatek mt8673 - No
Operating System mediatek mt8675_firmware - Yes
Hardware mediatek mt8675 - No
Operating System mediatek mt8676_firmware - Yes
Hardware mediatek mt8676 - No
Operating System mediatek mt8678_firmware - Yes
Hardware mediatek mt8678 - No
Operating System mediatek mt8755_firmware - Yes
Hardware mediatek mt8755 - No
Operating System mediatek mt8771_firmware - Yes
Hardware mediatek mt8771 - No
Operating System mediatek mt8775_firmware - Yes
Hardware mediatek mt8775 - No
Operating System mediatek mt8791_firmware - Yes
Hardware mediatek mt8791 - No
Operating System mediatek mt8791t_firmware - Yes
Hardware mediatek mt8791t - No
Operating System mediatek mt8792_firmware - Yes
Hardware mediatek mt8792 - No
Operating System mediatek mt8793_firmware - Yes
Hardware mediatek mt8793 - No
Operating System mediatek mt8795t_firmware - Yes
Hardware mediatek mt8795t - No
Operating System mediatek mt8797_firmware - Yes
Hardware mediatek mt8797 - No
Operating System mediatek mt8798_firmware - Yes
Hardware mediatek mt8798 - No
Operating System mediatek mt8863_firmware - Yes
Hardware mediatek mt8863 - No
Operating System mediatek mt8873_firmware - Yes
Hardware mediatek mt8873 - No
Operating System mediatek mt8883_firmware - Yes
Hardware mediatek mt8883 - No
Operating System mediatek mt8893_firmware - Yes
Hardware mediatek mt8893 - No
References

How SecUtils Interprets This CVE

SecUtils normalizes and enriches National Vulnerability Database (NVD) records by standardizing vendor and product identifiers, aggregating vulnerability metadata from both NVD and MITRE sources, and providing structured context for security teams. For mediatek's affected products, we extract Common Platform Enumeration (CPE) data, Common Weakness Enumeration (CWE) classifications, CVSS severity metrics, and reference data to enable rapid vulnerability prioritization and asset correlation. This record contains no exploit code, proof-of-concept instructions, or attack methodologies—only defensive intelligence necessary for patch management, risk assessment, and security operations.