CVE-2026-20458
Summary
| CVE | CVE-2026-20458 |
|---|---|
| State | PUBLISHED |
| Assigner | MediaTek |
| Source Priority | CVE Program / NVD first with legacy fallback |
| Published | 2026-07-01 04:17:13 UTC |
| Updated | 2026-07-02 05:16:40 UTC |
| Description | In Modem, there is a possible memory corruption 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 not needed for exploitation. Patch ID: MOLY01402160; Issue ID: MSV-7298. |
Risk And Classification
Primary CVSS: v3.1 7.5 HIGH from ADP
CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
EPSS: 0.002020000 probability, percentile 0.102380000 (date 2026-07-03)
Problem Types: CWE-787 | CWE-787 CWE-787 Out-of-bounds Write
| Version | Source | Type | Score | Severity | Vector |
|---|---|---|---|---|---|
| 3.1 | ADP | DECLARED | 7.5 | HIGH | CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H |
| 3.1 | 134c704f-9b21-4f2e-91b3-4a467353bcc0 | Secondary | 7.5 | HIGH | CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H |
CVSS v3.1 Breakdown
Attack Vector
AdjacentAttack Complexity
HighPrivileges Required
NoneUser Interaction
NoneScope
UnchangedConfidentiality
HighIntegrity
HighAvailability
HighCVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
Vendor Declared Affected Products
| Source | Vendor | Product | Version | Platforms |
|---|---|---|---|---|
| CNA | MediaTek Inc. | MediaTek Chipset | affected MT2716 | Not specified |
| CNA | MediaTek Inc. | MediaTek Chipset | affected MT2737 | Not specified |
| CNA | MediaTek Inc. | MediaTek Chipset | affected MT6739 | Not specified |
| CNA | MediaTek Inc. | MediaTek Chipset | affected MT6761 | Not specified |
| CNA | MediaTek Inc. | MediaTek Chipset | affected MT6762 | Not specified |
| CNA | MediaTek Inc. | MediaTek Chipset | affected MT6763 | Not specified |
| CNA | MediaTek Inc. | MediaTek Chipset | affected MT6765 | Not specified |
| CNA | MediaTek Inc. | MediaTek Chipset | affected MT6767 | Not specified |
| CNA | MediaTek Inc. | MediaTek Chipset | affected MT6768 | Not specified |
| CNA | MediaTek Inc. | MediaTek Chipset | affected MT6769 | Not specified |
| CNA | MediaTek Inc. | MediaTek Chipset | affected MT6771 | Not specified |
| CNA | MediaTek Inc. | MediaTek Chipset | affected MT6779 | Not specified |
| CNA | MediaTek Inc. | MediaTek Chipset | affected MT6781 | Not specified |
| CNA | MediaTek Inc. | MediaTek Chipset | affected MT6783 | Not specified |
| CNA | MediaTek Inc. | MediaTek Chipset | affected MT6785 | Not specified |
| CNA | MediaTek Inc. | MediaTek Chipset | affected MT6789 | Not specified |
| CNA | MediaTek Inc. | MediaTek Chipset | affected MT6813 | Not specified |
| CNA | MediaTek Inc. | MediaTek Chipset | affected MT6835 | Not specified |
| CNA | MediaTek Inc. | MediaTek Chipset | affected MT6858 | Not specified |
| CNA | MediaTek Inc. | MediaTek Chipset | affected MT6878 | Not specified |
| CNA | MediaTek Inc. | MediaTek Chipset | affected MT6879 | Not specified |
| CNA | MediaTek Inc. | MediaTek Chipset | affected MT6881 | Not specified |
| CNA | MediaTek Inc. | MediaTek Chipset | affected MT6886 | Not specified |
| CNA | MediaTek Inc. | MediaTek Chipset | affected MT6895 | Not specified |
| CNA | MediaTek Inc. | MediaTek Chipset | affected MT6896 | Not specified |
| CNA | MediaTek Inc. | MediaTek Chipset | affected MT6897 | Not specified |
| CNA | MediaTek Inc. | MediaTek Chipset | affected MT6899 | Not specified |
| CNA | MediaTek Inc. | MediaTek Chipset | affected MT6980 | Not specified |
| CNA | MediaTek Inc. | MediaTek Chipset | affected MT6982 | Not specified |
| CNA | MediaTek Inc. | MediaTek Chipset | affected MT6983 | Not specified |
| CNA | MediaTek Inc. | MediaTek Chipset | affected MT6985 | Not specified |
| CNA | MediaTek Inc. | MediaTek Chipset | affected MT6986 | Not specified |
| CNA | MediaTek Inc. | MediaTek Chipset | affected MT6986D | Not specified |
| CNA | MediaTek Inc. | MediaTek Chipset | affected MT6988 | Not specified |
| CNA | MediaTek Inc. | MediaTek Chipset | affected MT6989 | Not specified |
| CNA | MediaTek Inc. | MediaTek Chipset | affected MT6990 | Not specified |
| CNA | MediaTek Inc. | MediaTek Chipset | affected MT6991 | Not specified |
| CNA | MediaTek Inc. | MediaTek Chipset | affected MT6993 | Not specified |
| CNA | MediaTek Inc. | MediaTek Chipset | affected MT8666 | Not specified |
| CNA | MediaTek Inc. | MediaTek Chipset | affected MT8667 | Not specified |
| CNA | MediaTek Inc. | MediaTek Chipset | affected MT8668 | Not specified |
| CNA | MediaTek Inc. | MediaTek Chipset | affected MT8673 | Not specified |
| CNA | MediaTek Inc. | MediaTek Chipset | affected MT8676 | Not specified |
| CNA | MediaTek Inc. | MediaTek Chipset | affected MT8678 | Not specified |
| CNA | MediaTek Inc. | MediaTek Chipset | affected MT8755 | Not specified |
| CNA | MediaTek Inc. | MediaTek Chipset | affected MT8765 | Not specified |
| CNA | MediaTek Inc. | MediaTek Chipset | affected MT8766 | Not specified |
| CNA | MediaTek Inc. | MediaTek Chipset | affected MT8766R | Not specified |
| CNA | MediaTek Inc. | MediaTek Chipset | affected MT8768 | Not specified |
| CNA | MediaTek Inc. | MediaTek Chipset | affected MT8775 | Not specified |
| CNA | MediaTek Inc. | MediaTek Chipset | affected MT8781 | Not specified |
| CNA | MediaTek Inc. | MediaTek Chipset | affected MT8786 | Not specified |
| CNA | MediaTek Inc. | MediaTek Chipset | affected MT8788 | Not specified |
| CNA | MediaTek Inc. | MediaTek Chipset | affected MT8788E | Not specified |
| CNA | MediaTek Inc. | MediaTek Chipset | affected MT8789 | Not specified |
| CNA | MediaTek Inc. | MediaTek Chipset | affected MT8792 | Not specified |
| CNA | MediaTek Inc. | MediaTek Chipset | affected MT8793 | Not specified |
| CNA | MediaTek Inc. | MediaTek Chipset | affected MT8795T | Not specified |
| CNA | MediaTek Inc. | MediaTek Chipset | affected MT8796 | Not specified |
| CNA | MediaTek Inc. | MediaTek Chipset | affected MT8798 | Not specified |
| CNA | MediaTek Inc. | MediaTek Chipset | affected MT8863 | Not specified |
| CNA | MediaTek Inc. | MediaTek Chipset | affected MT8873 | Not specified |
| CNA | MediaTek Inc. | MediaTek Chipset | affected MT8883 | Not specified |
| CNA | MediaTek Inc. | MediaTek Chipset | affected MT8893 | Not specified |
References
| Reference | Source | Link | Tags |
|---|---|---|---|
| corp.mediatek.com/product-security-bulletin/July-2026 | [email protected] | corp.mediatek.com | |
| CVE Program record | CVE.ORG | www.cve.org | canonical |
| NVD vulnerability detail | NVD | nvd.nist.gov | canonical, analysis |
No vendor comments have been submitted for this CVE.
There are currently no legacy QID mappings associated with this CVE.