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    January 2026
    Product Security Bulletin

    Published 2026-01-05

    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 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).

    Summary

    Severity CVEs
    High CVE-2025-20795, CVE-2025-20794, CVE-2025-20793, CVE-2025-20762, CVE-2025-20761, CVE-2025-20760
    Medium CVE-2025-20796, CVE-2025-20797, CVE-2025-20798, CVE-2025-20799, CVE-2025-20800, CVE-2025-20801, CVE-2025-20802, CVE-2025-20778, CVE-2025-20779, CVE-2025-20780, CVE-2025-20781, CVE-2025-20782, CVE-2025-20783, CVE-2025-20784, CVE-2025-20785, CVE-2025-20786, CVE-2025-20787, CVE-2025-20803, CVE-2025-20804, CVE-2025-20805, CVE-2025-20806, CVE-2025-20807

    Details

    CVE CVE-2025-20795
    Title Out-of-bounds write in KeyInstall
    Severity High
    CWE CWE-787 Out-of-bounds Write
    Description There is a possible out of bounds write due to a missing bounds check.
    Affected Chipsets MT2718, MT6580, MT6739, MT6761, MT6765, MT6768, MT6779, MT6781, MT6785, MT6789, MT6833, MT6835, MT6853, MT6855, MT6873, MT6877, MT6878, MT6879, MT6883, MT6885, MT6886, MT6889, MT6893, MT6895, MT6897, MT6899, MT6983, MT6985, MT6989, MT6991, MT8186, MT8188, MT8195, MT8196, MT8370, MT8390, MT8391, MT8395, MT8676, MT8678, MT8696, MT8755, MT8766, MT8768, MT8781, MT8786, MT8788E, MT8791T, MT8792, MT8793, MT8796, MT8873, MT8883, MT8893
    Report Source External

    CVE CVE-2025-20794
    Title Stack overflow in Modem
    Severity High
    CWE CWE-121 Stack Overflow
    Description There is a possible system crash due to improper input validation.
    Affected Chipsets MT2735, MT2737, MT6813, MT6815, MT6833, MT6835, MT6853, MT6855, 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, MT8673, MT8675, MT8676, MT8678, MT8755, MT8771, MT8791, MT8791T, MT8792, MT8793, MT8795T, MT8797, MT8798, MT8863, MT8873, MT8883, MT8893
    Report Source External

    CVE CVE-2025-20793
    Title Null pointer dereference in Modem
    Severity High
    CWE CWE-476 NULL Pointer Dereference
    Description There is a possible system crash due to incorrect error handling.
    Affected Chipsets MT2735, MT2737, MT6813, MT6815, MT6833, MT6835, MT6853, MT6855, MT6873, MT6875, MT6877, MT6878, MT6879, MT6880, MT6883, MT6885, MT6886, MT6889, MT6890, MT6891, MT6893, MT6895, MT6896, MT6897, MT6899, MT6980, MT6983, MT6985, MT6989, MT6990, MT6991, MT6993, MT8673, MT8675, MT8676, MT8678, MT8755, MT8771, MT8791, MT8791T, MT8792, MT8793, MT8795T, MT8797, MT8798, MT8863, MT8873, MT8883, MT8893
    Report Source External

    CVE CVE-2025-20762
    Title Reachable assertion in Modem
    Severity High
    CWE CWE-617 Reachable Assertion
    Description There is a possible system crash due to incorrect error handling.
    Affected Chipsets MT6835, MT6835T, MT6878, MT6878M, MT6897, MT6899, MT6991, MT8676, MT8678, MT8755, MT8792, MT8793, MT8863, MT8873, MT8883
    Report Source External

    CVE CVE-2025-20761
    Title Improper check for unusual or exceptional conditions in Modem
    Severity High
    CWE CWE-754 Improper Check for Unusual or Exceptional Conditions
    Description There is a possible system crash due to incorrect error handling.
    Affected Chipsets MT2735, MT2737, MT6833, MT6833P, MT6835, MT6835T, MT6853, MT6853T, MT6855, MT6855T, MT6873, MT6875, MT6875T, MT6877, MT6877T, MT6877TT, MT6879, MT6880, MT6883, MT6885, MT6886, MT6889, MT6890, MT6891, MT6893, MT6895, MT6895TT, MT6896, MT6897, MT6980, MT6980D, MT6983, MT6983T, MT6985, MT6985T, MT6989, MT6989T, MT6990, MT8673, MT8675, MT8676, MT8678, MT8755, MT8771, MT8791, MT8791T, MT8792, MT8793, MT8795T, MT8797, MT8798, MT8863, MT8873, MT8883, MT8893
    Report Source External

    CVE CVE-2025-20760
    Title Reachable assertion in Modem
    Severity High
    CWE CWE-617 Reachable Assertion
    Description There is a possible read of uninitialized heap data due to an uncaught exception.
    Affected Chipsets MT2735, MT2737, MT6833, MT6835, MT6853, MT6855, 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, MT8673, MT8675, MT8676, MT8678, MT8755, MT8771, MT8791, MT8791T, MT8792, MT8793, MT8795T, MT8797, MT8798, MT8863, MT8873, MT8883, MT8893
    Report Source External

    CVE CVE-2025-20796
    Title Specified index, position, or offset in imgsys
    Severity Medium
    CWE CWE-1285 Specified Index, Position, or Offset
    Description There is a possible out of bounds write due to improper input validation.
    Affected Chipsets MT6989, MT8796, MT8893
    Report Source External

    CVE CVE-2025-20797
    Title Stack overflow in battery
    Severity Medium
    CWE CWE-121 Stack Overflow
    Description There is a possible out of bounds write due to a missing bounds check.
    Affected Chipsets MT2718, MT6765, MT6768, MT6781, MT6833, MT6835, MT6853, MT6855, MT6877, MT6879, MT6893, MT6985, MT6989, MT6991, MT8186, MT8188, MT8196, MT8367, MT8391, MT8676, MT8678, MT8696, MT8766, MT8768, MT8781, MT8786, MT8788E, MT8791T, MT8792, MT8793, MT8796, MT8873, MT8883, MT8893
    Report Source External

    CVE CVE-2025-20798
    Title Out-of-bounds write in battery
    Severity Medium
    CWE CWE-787 Out-of-bounds Write
    Description There is a possible out of bounds write due to a missing bounds check.
    Affected Chipsets MT2718, MT6765, MT6768, MT6781, MT6833, MT6835, MT6853, MT6855, MT6877, MT6879, MT6893, MT6985, MT6989, MT6991, MT8186, MT8188, MT8196, MT8367, MT8391, MT8676, MT8678, MT8696, MT8766, MT8768, MT8781, MT8786, MT8788E, MT8791T, MT8792, MT8793, MT8796, MT8873, MT8883, MT8893
    Report Source External

    CVE CVE-2025-20799
    Title Use after free in c2ps
    Severity Medium
    CWE CWE-416 Use After Free
    Description There is a possible memory corruption due to use after free.
    Affected Chipsets MT6899, MT6991, MT6993, MT8793
    Report Source External

    CVE CVE-2025-20800
    Title Out-of-bounds write in mminfra
    Severity Medium
    CWE CWE-787 Out-of-bounds Write
    Description There is a possible out of bounds write due to a missing bounds check.
    Affected Chipsets MT2718, MT6899, MT6989, MT6991, MT8678, MT8793
    Report Source External

    CVE CVE-2025-20801
    Title Double free in seninf
    Severity Medium
    CWE CWE-415 Double Free
    Description There is a possible memory corruption due to a race condition.
    Affected Chipsets MT6878, MT6897, MT6899, MT6985, MT6989, MT6991, MT6993, MT8792, MT8796, MT8798
    Report Source External

    CVE CVE-2025-20802
    Title Use after free in geniezone
    Severity Medium
    CWE CWE-416 Use After Free
    Description There is a possible memory corruption due to use after free.
    Affected Chipsets MT6991, MT8196, MT8367, MT8781, MT8786, MT8793
    Report Source External

    CVE CVE-2025-20778
    Title Out-of-bounds write in display
    Severity Medium
    CWE CWE-787 Out-of-bounds Write
    Description There is a possible out of bounds write due to a missing bounds check.
    Affected Chipsets MT6739, MT6761, MT6765, MT6768, MT6781, MT6789, MT6833, MT6835, MT6853, MT6855, MT6877, MT6878, MT6879, MT6883, MT6885, MT6886, MT6889, MT6893, MT6895, MT6897, MT6899, MT6983, MT6985, MT6989, MT6991, MT8186, MT8188, MT8196, MT8667, MT8673, MT8676, MT8678, MT8765, MT8766, MT8768, MT8771, MT8781, MT8791T, MT8792, MT8793, MT8795T, MT8796, MT8798, MT8873, MT8883
    Report Source External

    CVE CVE-2025-20779
    Title Use after free in display
    Severity Medium
    CWE CWE-416 Use After Free
    Description There is a possible use after free due to a race condition.
    Affected Chipsets MT6739, MT6761, MT6765, MT6768, MT6781, MT6789, MT6833, MT6835, MT6853, MT6855, MT6877, MT6878, MT6879, MT6883, MT6885, MT6886, MT6889, MT6893, MT6895, MT6897, MT6899, MT6983, MT6985, MT6989, MT6991, MT8186, MT8188, MT8196, MT8667, MT8673, MT8676, MT8678, MT8765, MT8766, MT8768, MT8771, MT8781, MT8791T, MT8792, MT8793, MT8795T, MT8796, MT8798, MT8873, MT8883
    Report Source External

    CVE CVE-2025-20780
    Title Use after free in display
    Severity Medium
    CWE CWE-416 Use After Free
    Description There is a possible memory corruption due to use after free.
    Affected Chipsets MT6739, MT6761, MT6765, MT6768, MT6781, MT6789, MT6833, MT6835, MT6853, MT6855, MT6877, MT6878, MT6879, MT6883, MT6885, MT6886, MT6889, MT6893, MT6895, MT6897, MT6899, MT6983, MT6985, MT6989, MT6991, MT8186, MT8188, MT8196, MT8667, MT8673, MT8676, MT8678, MT8765, MT8766, MT8768, MT8771, MT8781, MT8791T, MT8792, MT8793, MT8795T, MT8796, MT8798, MT8873, MT8883
    Report Source External

    CVE CVE-2025-20781
    Title Double free in display
    Severity Medium
    CWE CWE-415 Double Free
    Description There is a possible memory corruption due to use after free.
    Affected Chipsets MT6739, MT6761, MT6765, MT6768, MT6781, MT6789, MT6833, MT6835, MT6853, MT6855, MT6877, MT6878, MT6879, MT6883, MT6885, MT6886, MT6889, MT6893, MT6895, MT6897, MT6899, MT6983, MT6985, MT6989, MT6991, MT8186, MT8188, MT8196, MT8667, MT8673, MT8676, MT8678, MT8765, MT8766, MT8768, MT8771, MT8781, MT8791T, MT8792, MT8793, MT8795T, MT8796, MT8798, MT8873, MT8883
    Report Source External

    CVE CVE-2025-20782
    Title Out-of-bounds write in display
    Severity Medium
    CWE CWE-787 Out-of-bounds Write
    Description There is a possible out of bounds write due to a missing bounds check.
    Affected Chipsets MT6739, MT6761, MT6765, MT6768, MT6781, MT6789, MT6833, MT6835, MT6853, MT6855, MT6877, MT6878, MT6879, MT6883, MT6885, MT6886, MT6889, MT6893, MT6895, MT6897, MT6899, MT6983, MT6985, MT6989, MT6991, MT8186, MT8188, MT8196, MT8667, MT8673, MT8676, MT8678, MT8765, MT8766, MT8768, MT8771, MT8781, MT8791T, MT8792, MT8793, MT8795T, MT8796, MT8798, MT8873, MT8883
    Report Source External

    CVE CVE-2025-20783
    Title Out-of-bounds write in display
    Severity Medium
    CWE CWE-787 Out-of-bounds Write
    Description There is a possible out of bounds write due to a missing bounds check.
    Affected Chipsets MT6739, MT6761, MT6765, MT6768, MT6781, MT6789, MT6833, MT6835, MT6853, MT6855, MT6877, MT6878, MT6879, MT6883, MT6885, MT6886, MT6889, MT6893, MT6895, MT6897, MT6899, MT6983, MT6985, MT6989, MT6991, MT8186, MT8188, MT8196, MT8667, MT8673, MT8676, MT8678, MT8765, MT8766, MT8768, MT8771, MT8781, MT8791T, MT8792, MT8793, MT8795T, MT8796, MT8798, MT8873, MT8883
    Report Source External

    CVE CVE-2025-20784
    Title Use of uninitialized variable in display
    Severity Medium
    CWE CWE-457 Use of Uninitialized Variable
    Description There is a possible memory corruption due to uninitialized data.
    Affected Chipsets MT6739, MT6761, MT6765, MT6768, MT6781, MT6789, MT6833, MT6835, MT6853, MT6855, MT6877, MT6878, MT6879, MT6883, MT6885, MT6886, MT6889, MT6893, MT6895, MT6897, MT6899, MT6983, MT6985, MT6989, MT6991, MT8186, MT8188, MT8196, MT8667, MT8673, MT8676, MT8678, MT8765, MT8766, MT8768, MT8771, MT8781, MT8791T, MT8792, MT8793, MT8795T, MT8796, MT8798, MT8873, MT8883
    Report Source External

    CVE CVE-2025-20785
    Title Use after free in display
    Severity Medium
    CWE CWE-416 Use After Free
    Description There is a possible memory corruption due to use after free.
    Affected Chipsets MT6739, MT6761, MT6765, MT6768, MT6781, MT6789, MT6833, MT6835, MT6853, MT6855, MT6877, MT6878, MT6879, MT6883, MT6885, MT6886, MT6889, MT6893, MT6895, MT6897, MT6899, MT6983, MT6985, MT6989, MT6991, MT8186, MT8188, MT8196, MT8667, MT8673, MT8676, MT8678, MT8765, MT8766, MT8768, MT8771, MT8781, MT8791T, MT8792, MT8793, MT8795T, MT8796, MT8798, MT8873, MT8883
    Report Source External

    CVE CVE-2025-20786
    Title Double free in display
    Severity Medium
    CWE CWE-415 Double Free
    Description There is a possible memory corruption due to use after free.
    Affected Chipsets MT6739, MT6761, MT6765, MT6768, MT6781, MT6789, MT6833, MT6835, MT6853, MT6855, MT6877, MT6878, MT6879, MT6883, MT6885, MT6886, MT6889, MT6893, MT6895, MT6897, MT6899, MT6983, MT6985, MT6989, MT6991, MT8186, MT8188, MT8196, MT8667, MT8673, MT8676, MT8678, MT8765, MT8766, MT8768, MT8771, MT8781, MT8791T, MT8792, MT8793, MT8795T, MT8796, MT8798, MT8873, MT8883
    Report Source External

    CVE CVE-2025-20787
    Title Use after free in display
    Severity Medium
    CWE CWE-416 Use After Free
    Description There is a possible memory corruption due to use after free.
    Affected Chipsets MT2718, MT6739, MT6761, MT6765, MT6768, MT6781, MT6789, MT6833, MT6835, MT6853, MT6855, MT6877, MT6878, MT6879, MT6883, MT6885, MT6886, MT6889, MT6893, MT6895, MT6897, MT6899, MT6983, MT6985, MT6989, MT6991, MT8196, MT8676, MT8678, MT8796
    Report Source External

    CVE CVE-2025-20803
    Title Integer overflow in dpe
    Severity Medium
    CWE CWE-190 Integer Overflow
    Description There is a possible memory corruption due to an integer overflow.
    Affected Chipsets MT6899, MT6991, MT8793
    Report Source External

    CVE CVE-2025-20804
    Title Use after free in dpe
    Severity Medium
    CWE CWE-416 Use After Free
    Description There is a possible memory corruption due to use after free.
    Affected Chipsets MT6899, MT6991
    Report Source External

    CVE CVE-2025-20805
    Title Use after free in dpe
    Severity Medium
    CWE CWE-416 Use After Free
    Description There is a possible memory corruption due to use after free.
    Affected Chipsets MT6899, MT6991, MT8793
    Report Source External

    CVE CVE-2025-20806
    Title Use after free in dpe
    Severity Medium
    CWE CWE-416 Use After Free
    Description There is a possible memory corruption due to use after free.
    Affected Chipsets MT6899, MT6991, MT8793
    Report Source External

    CVE CVE-2025-20807
    Title Integer overflow in dpe
    Severity Medium
    CWE CWE-190 Integer Overflow
    Description There is a possible out of bounds write due to an integer overflow.
    Affected Chipsets MT6899, MT6991, MT8793
    Report Source External

    Versions

    Version Date Description
    1.0 January 5, 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.

    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.