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    September 2025
    Product Security Bulletin

    Published 2025-09-01

    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 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).

    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.

    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.