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 have no evidence that these vulnerabilities have been exploited 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-2025-20708, CVE-2025-20703, CVE-2025-20704 |
| Medium | CVE-2025-20705, CVE-2025-20706, CVE-2025-20707 |
Details
| CVE | CVE-2025-20708 |
|---|---|
| Title | Out-of-bounds write in Modem |
| Severity | High |
| CWE | CWE-787 Out-of-bounds Write |
| Description | In Modem, there is a possible out of bounds write due to an incorrect 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. |
| Affected Chipsets | MT2735, MT2737, MT6813, MT6815, MT6833, MT6833P, MT6835, MT6835T, MT6853, MT6853T, MT6855, MT6855T, MT6873, MT6875, MT6875T, MT6877, MT6877T, MT6877TT, MT6878, MT6878M, MT6879, MT6880, MT6883, MT6885, MT6886, MT6889, MT6890, MT6891, MT6893, MT6895, MT6895TT, MT6896, MT6897, MT6899, MT6980, MT6980D, MT6983, MT6983T, MT6985, MT6985T, MT6989, MT6989T, MT6990, MT6991, MT8673, MT8675, MT8676, MT8678, MT8771, MT8791, MT8791T, MT8792, MT8795T, MT8797, MT8798, MT8863, MT8873, MT8883, MT8893 |
| Affected Software Versions | Modem NR15, NR16, NR17, NR17R |
| Report Source | External |
| CVE | CVE-2025-20703 |
|---|---|
| Title | Out-of-bounds read in Modem |
| Severity | High |
| CWE | CWE-125 Out-of-bounds Read |
| Description | In Modem, there is a possible out of bounds read due to an incorrect bounds check. 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. |
| Affected Chipsets | MT2735, MT2737, MT6813, MT6833, MT6833P, MT6835, MT6835T, MT6853, MT6853T, MT6855, MT6855T, MT6873, MT6875, MT6875T, MT6877, MT6877T, MT6877TT, MT6878, MT6878M, MT6879, MT6880, MT6883, MT6885, MT6886, MT6889, MT6890, MT6891, MT6893, MT6895, MT6895TT, MT6896, MT6897, MT6899, MT6980, MT6980D, MT6983, MT6983T, MT6985, MT6985T, MT6989, MT6989T, MT6990, MT6991, MT8673, MT8675, MT8676, MT8678, MT8771, MT8791, MT8791T, MT8792, MT8795T, MT8797, MT8798, MT8863, MT8873, MT8883, MT8893 |
| Affected Software Versions | Modem NR15, NR16, NR17, NR17R |
| Report Source | External |
| CVE | CVE-2025-20704 |
|---|---|
| Title | Out-of-bounds write in Modem |
| Severity | High |
| CWE | CWE-787 Out-of-bounds Write |
| 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. |
| Affected Chipsets | MT6813, MT6835, MT6835T, MT6878, MT6878M, MT6897, MT6899, MT6991, MT8676, MT8678, MT8792, MT8863, MT8873, MT8883 |
| Affected Software Versions | Modem NR17, NR17R |
| Report Source | Internal |
| CVE | CVE-2025-20705 |
|---|---|
| Title | Use after free in monitor_hang |
| Severity | Medium |
| CWE | CWE-416 Use After Free |
| Description | In monitor_hang, there is a possible memory corruption due to use after free. This could lead to local escalation of privilege if a malicious actor has already obtained the System privilege. User interaction is not needed for exploitation. |
| Affected Chipsets | MT2718, MT2735, MT6739, MT6761, MT6765, MT6768, MT6781, MT6789, MT6835, MT6853, MT6855, MT6877, MT6878, MT6879, MT6880, MT6883, MT6885, MT6886, MT6889, MT6890, MT6893, MT6895, MT6897, MT6899, MT6980D, MT6983, MT6985, MT6989, MT6990, MT6991, MT8169, MT8186, MT8188, MT8676, MT8678, MT8696, MT8775, MT8792, MT8796 |
| Affected Software Versions | Android 13.0, 14.0, 15.0, 16.0 / openWRT 19.07, 21.02 / Yocto 2.6 |
| Report Source | External |
| CVE | CVE-2025-20706 |
|---|---|
| Title | Use after free in mbrain |
| Severity | Medium |
| CWE | CWE-416 Use After Free |
| Description | In mbrain, there is a possible memory corruption due to use after free. This could lead to local escalation of privilege if a malicious actor has already obtained the System privilege. User interaction is not needed for exploitation. |
| Affected Chipsets | MT6899, MT6989, MT6991, MT8676, MT8678 |
| Affected Software Versions | Android 14.0, 15.0 |
| Report Source | External |
| CVE | CVE-2025-20707 |
|---|---|
| Title | Use after free in geniezone |
| Severity | Medium |
| CWE | CWE-416 Use After Free |
| Description | In geniezone, there is a possible memory corruption due to use after free. This could lead to local escalation of privilege if a malicious actor has already obtained the System privilege. User interaction is not needed for exploitation. |
| Affected Chipsets | MT2718, MT6853, MT6877, MT6893, MT6899, MT6991, MT8196, MT8676, MT8678, MT8775, MT8786, MT8788E, MT8791T, MT8792, MT8796, MT8883, MT8893 |
| Affected Software Versions | Android 13.0, 14.0, 15.0 |
| Report Source | External |
Versions
| Version | Date | Description |
| 1.0 | September 1, 2025 | 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.