CVE-2025-20666 Details
Description
In Modem, there is a possible system crash due to an uncaught exception. This could lead to remote denial of service, if a UE has connected to a rogue base station controlled by the attacker, with no additional execution privileges needed. User interaction is not needed for exploitation. Patch ID: MOLY00650610; Issue ID: MSV-2933.
A denial-of-service vulnerability has been identified in the Modem component of various MediaTek chipsets. This issue arises from a reachable assertion that allows an uncaught exception to cause a system crash. The vulnerability can be exploited remotely if a user equipment (UE) is connected to a rogue base station controlled by an attacker. Notably, no additional execution privileges are required for exploitation, and user interaction is not needed.
MediaTek has issued a patch for this vulnerability, which can be applied by device manufacturers. Instructions for applying the patch should be available through the MediaTek contact person for OEMs.
Metrics
CVSS 4.0 Severity and Vector Strings:
No CVSS 4.0 data is available for this CVE.
CVSS 3.x Severity and Vector Strings:
No data available for CVSS Version 2.0 on this CVE.
CISA-ADP
Assessed Feb 17, 2026References to Advisories, Solutions, and Tools
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| URL | Source(s) | Tag(s) |
|---|---|---|
| https://corp.mediatek.com/product-security-bulletin/May-2025 | [email protected] | Vendor Advisory |
Weakness Enumeration
| CWE-ID | CWE Name | Source |
|---|---|---|
| CWE-617 | Reachable Assertion | [email protected] |
Affected Products
| Product | Versions |
|---|---|
| mediatek nr15 | All versions |
CPE
Remediation
| |
| mediatek mt2735 | All versions |
CPE
Remediation
| |
| mediatek mt6833 | All versions |
CPE
Remediation
| |
| mediatek mt6833p | All versions |
CPE
Remediation
| |
| mediatek mt6853 | All versions |
CPE
Remediation
| |
| mediatek mt6853t | All versions |
CPE
Remediation
| |
| mediatek mt6855 | All versions |
CPE
Remediation
| |
| mediatek mt6855t | All versions |
CPE
Remediation
| |
| mediatek mt6873 | All versions |
CPE
Remediation
| |
| mediatek mt6875 | All versions |
CPE
Remediation
| |
| mediatek mt6875t | All versions |
CPE
Remediation
| |
| mediatek mt6877 | All versions |
CPE
Remediation
| |
| mediatek mt6877t | All versions |
CPE
Remediation
| |
| mediatek mt6877tt | All versions |
CPE
Remediation
| |
| mediatek mt6880 | All versions |
CPE
Remediation
| |
| mediatek mt6883 | All versions |
CPE
Remediation
| |
| mediatek mt6885 | All versions |
CPE
Remediation
| |
| mediatek mt6889 | All versions |
CPE
Remediation
| |
| mediatek mt6890 | All versions |
CPE
Remediation
| |
| mediatek mt6891 | All versions |
CPE
Remediation
| |
| mediatek mt6893 | All versions |
CPE
Remediation
| |
| mediatek mt8666 | All versions |
CPE
Remediation
| |
| mediatek mt8667 | All versions |
CPE
Remediation
| |
| mediatek mt8673 | All versions |
CPE
Remediation
| |
| mediatek mt8675 | All versions |
CPE
Remediation
| |
| mediatek mt8771 | All versions |
CPE
Remediation
| |
| mediatek mt8791 | All versions |
CPE
Remediation
| |
| mediatek mt8791t | All versions |
CPE
Remediation
| |
| mediatek mt8795t | All versions |
CPE
Remediation
| |
| mediatek mt8797 | All versions |
CPE
Remediation
| |
| mediatek mt8798 | All versions |
CPE
Remediation
| |
Change History
7 change records found show changes
| Date | Action | Recorded By |
|---|---|---|
| Jun 17, 2026 | CVE Modified | [email protected] |
| Jun 17, 2026 | CVE Modified | CISA-ADP |
| Feb 17, 2026 | CVE Modified | CISA-ADP |
| May 12, 2025 | CVE Modified | CISA-ADP |
| May 8, 2025 | Reanalysis | [email protected] |
| May 6, 2025 | Initial Analysis | [email protected] |
| May 5, 2025 | New CVE Received | [email protected] |