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    November 2025
    Product Security Bulletin

    Published 2025-11-03

    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-2025-20727, CVE-2025-20726, CVE-2025-20725, CVE-2025-20728, CVE-2025-20730, CVE-2025-20733, CVE-2025-20735, CVE-2025-20737, CVE-2025-20740, CVE-2025-20742
    Medium CVE-2025-20743, CVE-2025-20744, CVE-2025-20745, CVE-2025-20729, CVE-2025-20731, CVE-2025-20732, CVE-2025-20734, CVE-2025-20736, CVE-2025-20738, CVE-2025-20739, CVE-2025-20746, CVE-2025-20747, CVE-2025-20741, CVE-2025-20748, CVE-2025-20749

    Details

    CVE CVE-2025-20727
    Title Out-of-bounds write in Modem
    Severity High
    CWE CWE-787 Out-of-bounds Write
    Description There is a possible out of bounds write due to a heap buffer overflow.
    Affected Chipsets MT2735, MT2737, MT6739, MT6761, MT6762, MT6762D, MT6762M, MT6763, MT6765, MT6765T, MT6767, MT6768, MT6769, MT6769K, MT6769S, MT6769T, MT6769Z, MT6771, 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, MT8666, MT8667, MT8673, MT8675, MT8676, MT8678, MT8765, MT8766, MT8766R, MT8768, MT8771, MT8786, MT8788, MT8788E, MT8791, MT8791T, MT8792, MT8793, MT8795T, MT8797, MT8798, MT8863, MT8873, MT8883, MT8893
    Report Source External

    CVE CVE-2025-20726
    Title Heap overflow in Modem
    Severity High
    CWE CWE-122 Heap Overflow
    Description There is a possible out of bounds write due to an incorrect bounds check.
    Affected Chipsets MT2735, MT2737, MT6739, MT6761, MT6762, MT6762D, MT6762M, MT6763, MT6765, MT6765T, MT6767, MT6768, MT6769, MT6769K, MT6769S, MT6769T, MT6769Z, MT6771, 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, MT8666, MT8667, MT8673, MT8675, MT8676, MT8678, MT8765, MT8766, MT8766R, MT8768, MT8771, MT8786, MT8788, MT8788E, MT8791, MT8791T, MT8792, MT8793, MT8795T, MT8797, MT8798, MT8863, MT8873, MT8883, MT8893
    Report Source External

    CVE CVE-2025-20725
    Title Out-of-bounds write in ims service
    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 MT2735, MT2737, MT6739, MT6761, MT6762, MT6762D, MT6762M, MT6763, MT6765, MT6765T, MT6767, MT6768, MT6769, MT6769K, MT6769S, MT6769T, MT6769Z, MT6771, MT6833, MT6833P, MT6853, MT6853T, MT6855, MT6855T, MT6873, MT6875, MT6875T, MT6877, MT6877T, MT6877TT, MT6879, MT6880, MT6883, MT6885, MT6886, MT6889, MT6890, MT6891, MT6893, MT6895, MT6895TT, MT6896, MT6980, MT6980D, MT6983, MT6983T, MT6985, MT6985T, MT6989, MT6989T, MT6990, MT8666, MT8667, MT8673, MT8675, MT8765, MT8766, MT8766R, MT8768, MT8771, MT8786, MT8788, MT8788E, MT8791, MT8791T, MT8795T, MT8797, MT8798, MT8893
    Report Source External

    CVE CVE-2025-20728
    Title Heap overflow in wlan
    Severity High
    CWE CWE-122 Heap Overflow
    Description There is a possible out of bounds write due to an incorrect bounds check.
    Affected Chipsets MT7902, MT7920, MT7921, MT7922, MT7925, MT7927
    Report Source External

    CVE CVE-2025-20730
    Title Improper authentication - generic in preloader
    Severity High
    CWE CWE-287 Improper Authentication - Generic
    Description There is a possible escalation of privilege due to an insecure default value.
    Affected Chipsets MT2737, MT6739, MT6761, MT6765, MT6768, MT6781, MT6789, MT6833, MT6835, MT6853, MT6855, MT6877, MT6878, MT6879, MT6883, MT6885, MT6886, MT6889, MT6893, MT6895, MT6897, MT6899, MT6983, MT6985, MT6989, MT6990, MT6991, MT8188, MT8195, MT8676, MT8678, MT8696
    Report Source External

    CVE CVE-2025-20733
    Title Heap overflow in wlan
    Severity High
    CWE CWE-122 Heap Overflow
    Description There is a possible out of bounds write due to an incorrect bounds check.
    Affected Chipsets MT6890, MT7615, MT7622, MT7663, MT7915, MT7916, MT7981, MT7986
    Report Source External

    CVE CVE-2025-20735
    Title Heap overflow in wlan
    Severity High
    CWE CWE-122 Heap Overflow
    Description There is a possible out of bounds write due to an incorrect bounds check.
    Affected Chipsets MT6890, MT7615, MT7622, MT7663, MT7915, MT7916, MT7981, MT7986
    Report Source External

    CVE CVE-2025-20737
    Title Stack overflow in wlan
    Severity High
    CWE CWE-121 Stack Overflow
    Description There is a possible out of bounds write due to an incorrect bounds check.
    Affected Chipsets MT6890, MT7615, MT7622, MT7663, MT7915, MT7916, MT7981, MT7986
    Report Source External

    CVE CVE-2025-20740
    Title Time-of-check time-of-use (toctou) race condition in wlan
    Severity High
    CWE CWE-367 Time-of-check Time-of-use (TOCTOU) Race Condition
    Description There is a possible out of bounds read due to a race condition.
    Affected Chipsets MT7902, MT7920, MT7921, MT7922, MT7925, MT7927
    Report Source External

    CVE CVE-2025-20742
    Title Heap overflow in wlan
    Severity High
    CWE CWE-122 Heap Overflow
    Description There is a possible out of bounds write due to an incorrect bounds check.
    Affected Chipsets MT6890, MT7603, MT7615, MT7622, MT7915, MT7916, MT7981, MT7986
    Report Source External

    CVE CVE-2025-20743
    Title Use after free in clkdbg
    Severity Medium
    CWE CWE-416 Use After Free
    Description There is a possible escalation of privilege due to use after free.
    Affected Chipsets MT2718, MT6761, MT6765, MT6768, MT6781, MT6853, MT6877, MT6886, MT6893, MT6897, MT6899, MT6983, MT6989, MT6991, MT8113, MT8163, MT8168, MT8169, MT8183, MT8186, MT8188, MT8195, MT8196, MT8321, MT8365, MT8385, MT8390, MT8391, MT8512, MT8516, MT8519, MT8676, MT8678, MT8695, MT8696, MT8698, MT8755, MT8766, MT8768, MT8771, MT8775, MT8781, MT8786, MT8788E, MT8791T, MT8792, MT8793, MT8796, MT8797, MT8798, MT8873, MT8883, MT8893
    Report Source External

    CVE CVE-2025-20744
    Title Use after free in pda
    Severity Medium
    CWE CWE-416 Use After Free
    Description There is a possible escalation of privilege due to use after free.
    Affected Chipsets MT6899, MT6991, MT8793
    Report Source External

    CVE CVE-2025-20745
    Title Use after free in apusys
    Severity Medium
    CWE CWE-416 Use After Free
    Description There is a possible memory corruption due to use after free.
    Affected Chipsets MT2718, MT6989, MT6991, MT8370, MT8390, MT8395, MT8676, MT8678, MT87920
    Report Source External

    CVE CVE-2025-20729
    Title Heap overflow in wlan
    Severity Medium
    CWE CWE-122 Heap Overflow
    Description There is a possible out of bounds write due to an incorrect bounds check.
    Affected Chipsets MT6890, MT7615, MT7622, MT7663, MT7915, MT7916, MT7981, MT7986
    Report Source External

    CVE CVE-2025-20731
    Title Heap overflow in wlan
    Severity Medium
    CWE CWE-122 Heap Overflow
    Description There is a possible out of bounds write due to an incorrect bounds check.
    Affected Chipsets MT6890, MT7615, MT7622, MT7663, MT7915, MT7916, MT7981, MT7986
    Report Source External

    CVE CVE-2025-20732
    Title Stack overflow in wlan
    Severity Medium
    CWE CWE-121 Stack Overflow
    Description There is a possible out of bounds write due to an incorrect bounds check.
    Affected Chipsets MT6890, MT7615, MT7622, MT7663, MT7915, MT7916, MT7981, MT7986
    Report Source External

    CVE CVE-2025-20734
    Title Heap overflow in wlan
    Severity Medium
    CWE CWE-122 Heap Overflow
    Description There is a possible out of bounds write due to an incorrect bounds check.
    Affected Chipsets MT6890, MT7615, MT7622, MT7663, MT7915, MT7916, MT7981, MT7986
    Report Source External

    CVE CVE-2025-20736
    Title Stack overflow in wlan
    Severity Medium
    CWE CWE-121 Stack Overflow
    Description There is a possible out of bounds write due to an incorrect bounds check.
    Affected Chipsets MT6890, MT7615, MT7622, MT7663, MT7915, MT7916, MT7981, MT7986
    Report Source External

    CVE CVE-2025-20738
    Title Stack overflow in wlan
    Severity Medium
    CWE CWE-121 Stack Overflow
    Description There is a possible out of bounds write due to an incorrect bounds check.
    Affected Chipsets MT6890, MT7615, MT7622, MT7663, MT7915, MT7916, MT7981, MT7986
    Report Source External

    CVE CVE-2025-20739
    Title Stack overflow in wlan
    Severity Medium
    CWE CWE-121 Stack Overflow
    Description There is a possible out of bounds write due to an incorrect bounds check.
    Affected Chipsets MT6890, MT7615, MT7622, MT7663, MT7915, MT7916, MT7981, MT7986
    Report Source External

    CVE CVE-2025-20746
    Title Stack overflow in gnss
    Severity Medium
    CWE CWE-121 Stack Overflow
    Description There is a possible out of bounds write due to an incorrect bounds check.
    Affected Chipsets MT2718, MT2737, MT6835, MT6878, MT6886, MT6897, MT6899, MT6982, MT6985, MT6986, MT6986D, MT6989, MT6990, MT6991, MT8676, MT8678, MT8755, MT8893
    Report Source External

    CVE CVE-2025-20747
    Title Stack overflow in gnss
    Severity Medium
    CWE CWE-121 Stack Overflow
    Description There is a possible out of bounds write due to an incorrect bounds check.
    Affected Chipsets MT2718, MT2737, MT6835, MT6878, MT6886, MT6897, MT6899, MT6982, MT6985, MT6986, MT6986D, MT6989, MT6990, MT6991, MT8676, MT8678, MT8755, MT8893
    Report Source External

    CVE CVE-2025-20741
    Title Heap overflow in wlan
    Severity Medium
    CWE CWE-122 Heap Overflow
    Description There is a possible out of bounds write due to an incorrect bounds check.
    Affected Chipsets MT6890, MT7615, MT7622, MT7663, MT7915, MT7916, MT7981, MT7986
    Report Source External

    CVE CVE-2025-20748
    Title Classic buffer overflow in wlan
    Severity Medium
    CWE CWE-120 Classic Buffer Overflow
    Description There is a possible out of bounds write due to an incorrect bounds check.
    Affected Chipsets MT6890, MT7615, MT7622, MT7663, MT7915, MT7916, MT7981, MT7986
    Report Source External

    CVE CVE-2025-20749
    Title Stack overflow in charger
    Severity Medium
    CWE CWE-121 Stack Overflow
    Description There is a possible out of bounds write due to a missing bounds check.
    Affected Chipsets MT6789, MT6835, MT6855, MT6878, MT6879, MT6886, MT6897, MT6899, MT6983, MT6985, MT6989, MT6991, MT8169, MT8188, MT8195, MT8196, MT8781, MT8796
    Report Source External

    Versions

    Version Date Description
    1.0 November 3, 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.