The MediaTek Product Security Bulletin contains details of security vulnerabilities affecting certain MediaTek chipsets. Device OEMs have been notified of all the issues and the corresponding security patches for at least two months before publication. We take the security of our chipsets and our customers' products very seriously. At this time, we are not aware of any active exploitation of these vulnerabilities in the wild.
The severity of the identified vulnerabilities was conducted based on the Common Vulnerability Scoring System version 3.1 (CVSS v3.1).
The severity of the identified vulnerabilities was conducted based on the Common Vulnerability Scoring System version 3.1 (CVSS v3.1).
Summary
| Severity | CVEs |
|---|---|
| High | CVE-2026-20447, CVE-2026-20448, CVE-2026-20449, CVE-2026-20450 |
| Medium | CVE-2026-20451 |
Details
| CVE | CVE-2026-20447 |
|---|---|
| Subcomponent | geniezone |
| Severity | High |
| CWE | CWE-125 Out-of-bounds Read |
| Description | There is a possible escalation of privilege due to a missing bounds check. |
| Affected Chipsets | MT6768, MT6789, MT6877, MT6899, MT6989, MT6991, MT6993, MT8196, MT8367, MT8766, MT8768, MT8781, MT8786, MT8788E, MT8791T, MT8793, MT8910 |
| Report Source | External |
| CVE | CVE-2026-20448 |
|---|---|
| Subcomponent | geniezone |
| Severity | High |
| CWE | CWE-280 Improper Handling of Insufficient Permissions or Privileges |
| Description | There is a possible escalation of privilege due to a missing permission check. |
| Affected Chipsets | MT6765, MT6768, MT6789, MT6877, MT6897, MT6899, MT6989, MT6991, MT6993, MT8367, MT8766, MT8768, MT8775, MT8781, MT8786, MT8788E, MT8791T, MT8792, MT8793, MT8796, MT8893, MT8910 |
| Report Source | External |
| CVE | CVE-2026-20449 |
|---|---|
| Subcomponent | Modem |
| Severity | High |
| CWE | CWE-120 Classic Buffer Overflow |
| Description | There is a possible system crash due to a heap buffer overflow. |
| Affected Chipsets | MT2735, MT2737, MT6739, MT6761, MT6762, MT6763, MT6765, MT6767, MT6768, MT6769, MT6771, MT6779, MT6781, MT6783, MT6785, MT6789, MT6813, MT6815, MT6833, MT6835, MT6853, MT6855, MT6858, MT6873, MT6875, MT6877, MT6878, MT6879, MT6880, MT6883, MT6885, MT6886, MT6889, MT6890, MT6891, MT6893, MT6895, MT6896, MT6897, MT6899, MT6980, MT6983, MT6985, MT6986D, MT6988, MT6989, MT6990, MT6991, MT6993, MT8668, MT8673, MT8675, MT8676, MT8678, MT8755, MT8771, MT8775, MT8791, MT8791T, MT8792, MT8793, MT8795T, MT8797, MT8798, MT8863, MT8873, MT8883, MT8893 |
| Report Source | External |
| CVE | CVE-2026-20450 |
|---|---|
| Subcomponent | Modem |
| Severity | High |
| CWE | CWE-617 Reachable Assertion |
| Description | There is a possible system crash due to incorrect error handling. |
| Affected Chipsets | MT2735, MT2737, MT6833, MT6835, MT6853, MT6855, MT6858, MT6873, MT6875, MT6877, MT6878, MT6879, MT6880, MT6883, MT6885, MT6886, MT6889, MT6890, MT6891, MT6893, MT6895, MT6896, MT6897, MT6899, MT6980, MT6983, MT6985, MT6986, MT6989, MT6990, MT6991, MT6993, MT8668, MT8673, MT8675, MT8676, MT8678, MT8755, MT8771, MT8775, MT8791, MT8791T, MT8792, MT8793, MT8795T, MT8797, MT8798, MT8863, MT8873, MT8883, MT8893 |
| Report Source | Internal |
| CVE | CVE-2026-20451 |
|---|---|
| Subcomponent | slbc |
| Severity | Medium |
| CWE | CWE-843 Access of Resource Using Incompatible Type ('Type Confusion') |
| Description | There is a possible out of bounds write due to type confusion. |
| Affected Chipsets | MT2718, MT6899, MT6985, MT6989, MT6991, MT8115, MT8186, MT8188, MT8196, MT8365, MT8367, MT8370, MT8371, MT8390, MT8391, MT8395, MT8676, MT8678, MT8766, MT8768, MT8775, MT8781, MT8786, MT8788E, MT8791T, MT8792, MT8793, MT8796, MT8873, MT8883, MT8893, MT8910 |
| Report Source | External |
Versions
| Version | Date | Description |
| 1.0 | May 4, 2026 | Bulletin published. |
Notes
Information above is generated only at the time of creation of this Security Bulletin. The list of affected chipsets could be not complete. For any further information, device OEMs can reach your MediaTek contact person if needed.
If you want to report a security vulnerability in MediaTek chipsets or products, please go to Report Security Vulnerability page on MediaTek website.
If you want to report a security vulnerability in MediaTek chipsets or products, please go to Report Security Vulnerability page on MediaTek website.