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.

No CVSS v4.0

Attack Vector Adjacent Network

Attack Complexity Low

Privileges Required None

Scope Unchanged

Confidentiality Impact High

Integrity Impact High

Availability Impact High

User Interaction None

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

The EPSS score is 0.00053.

Exploitation none

Automatable no

Technical Impact total

Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).

Vendor Product Default status Versions
MediaTek, Inc. MediaTek chipset unaffected
Version Status Constraints
MT2735 affected —
MT2737 affected —
MT6813 affected —
MT6833 affected —
MT6833P affected —
MT6835 affected —
MT6835T affected —
MT6853 affected —
MT6853T affected —
MT6855 affected —
MT6855T affected —
MT6873 affected —
MT6875 affected —
MT6875T affected —
MT6877 affected —
MT6877T affected —
MT6877TT affected —
MT6878 affected —
MT6878M affected —
MT6879 affected —
MT6880 affected —
MT6883 affected —
MT6885 affected —
MT6886 affected —
MT6889 affected —
MT6890 affected —
MT6891 affected —
MT6893 affected —
MT6895 affected —
MT6895TT affected —
MT6896 affected —
MT6897 affected —
MT6899 affected —
MT6980 affected —
MT6980D affected —
MT6983 affected —
MT6983T affected —
MT6985 affected —
MT6985T affected —
MT6989 affected —
MT6989T affected —
MT6990 affected —
MT6991 affected —
MT8668 affected —
MT8673 affected —
MT8675 affected —
MT8676 affected —
MT8678 affected —
MT8755 affected —
MT8771 affected —
MT8775 affected —
MT8791 affected —
MT8791T affected —
MT8792 affected —
MT8793 affected —
MT8795T affected —
MT8797 affected —
MT8798 affected —
MT8863 affected —
MT8873 affected —
MT8883 affected —
MT8893 affected —

No data.

No data.

OpenCVE Enrichment is a feature of OpenCVE that uses AI to automatically link vendors and products to CVEs. Learn more on GitHub.

Vendors Products
Mediatek Subscribe
Mediatek Chipset Subscribe

Project Subscriptions

Vendors Products
Mediatek Subscribe
Mediatek Chipset Subscribe
Advisories

No advisories yet.

Fixes

Solution

No solution given by the vendor.

Workaround

No workaround given by the vendor.

References
Link Providers
https://corp.mediatek.com/product-security-bulletin/April-2026 cve-icon cve-icon
History

Wed, 08 Apr 2026 20:15:00 +0000

Type Values Removed Values Added
Title MediaTek Modem Out‑of‑Bounds Write Allows Remote Privilege Escalation via Rogue Base Station
First Time appeared Mediatek
Mediatek mediatek Chipset
Vendors & Products Mediatek
Mediatek mediatek Chipset

Tue, 07 Apr 2026 15:15:00 +0000

Type Values Removed Values Added
Metrics cvssV3_1

{'score': 8.8, 'vector': 'CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H'}

ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'total'}, 'version': '2.0.3'}

Tue, 07 Apr 2026 07:15:00 +0000

Type Values Removed Values Added
Description 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.
Weaknesses CWE-787
References

Projects

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cve-icon MITRE

Status: PUBLISHED

Assigner: MediaTek

Published:

Updated: 2026-04-08T03:55:26.543Z

Reserved: 2025-11-03T01:30:59.011Z

Link: CVE-2026-20433

cve-icon Vulnrichment

Updated: 2026-04-07T13:01:12.942Z

cve-icon NVD

Status : Undergoing Analysis

Published: 2026-04-07T04:17:12.830

Modified: 2026-04-07T14:16:19.807

Link: CVE-2026-20433

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-04-08T19:50:10Z

Weaknesses