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    CVE-2026-33957

    An issue was discovered in CustOS Driver in Samsung Mobile Processor Exynos 1580. Requesting oversized shared memory from the custos_iwc device enables out-of-bounds read and write, potentially leading to memory corruption or information leakage.

    Published:Sep 14, 2026
    Last Modified:Sep 15, 2026
    EPS:Sep 14, 2026
    EPSS Score:0.00094
    CVSS Score:4.2

    Affected Products

    Vendor
    Samsung
    Product
    Exynos 1580 Firmware

    Exploits

    No exploit reference

    Common Weakness Enumeration

    CWE-787 Out-of-bounds Write

    Common Attack Pattern Enumeration and Classification (CAPEC)

    No CAPEC recorded yet

    Related CVEs

    CVE-2026-33964 (CVSS 6.4) — An issue was discovered in camera in Samsung Mobile Processor Exynos 1580 and 2500. An untrusted pointer deref…
    CVE-2025-62818 (CVSS 9.8) — An issue was discovered in Samsung Mobile Processor, Wearable Processor, and Modem Exynos 980, 990, 850, 1080,…
    CVE-2025-52908 (CVSS 9.8) — An issue was discovered in the Wi-Fi driver in Samsung Mobile Processor and Wearable Processor Exynos 980, 850…
    CVE-2025-52909 (CVSS 9.8) — An issue was discovered in the Wi-Fi driver in Samsung Mobile Processor and Wearable Processor Exynos 980, 850…
    CVE-2025-54601 (CVSS 7) — An issue was discovered in the Wi-Fi driver in Samsung Mobile Processor amd Wearable Processor Exynos 980, 850…
    CVE-2025-57834 (CVSS 7.5) — An issue was discovered in Samsung Mobile Processor, Wearable Processor, and Modem (Exynos 980, 850, 990, 1080…
    CVE-2025-57835 (CVSS 7.5) — An issue was discovered in RRC in Samsung Mobile Processor, Wearable Processor, and Modem Exynos 980, 990, 850…
    CVE-2025-58349 (CVSS 9.1) — An issue was discovered in L2 in Samsung Mobile Processor, Wearable Processor, and Modem Exynos 980, 990, 850,…
    CVE-2025-59440 (CVSS 7.5) — An issue was discovered in USIM in Samsung Mobile Processor, Wearable Processor, and Modem Exynos 980, 990, 85…
    CVE-2025-54328 (CVSS 10) — An issue was discovered in SMS in Samsung Mobile Processor, Wearable Processor, and Modem Exynos 980, 990, 850…

    Common Vulnerability Scoring System

    Attack Vector
    Network
    Adjacent
    Local
    Physical
    Privileges Required
    None
    Low
    High
    User Interaction
    None
    Required
    Scope
    Unchanged
    Changed
    Confidentiality
    None
    Low
    High
    Integrity
    None
    Low
    High
    Availability
    None
    Low
    High