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Advisory Published

CVE-2023-26073: Buffer Overflow

First published: Mon Mar 13 2023(Updated: )

An issue was discovered in Samsung Mobile Chipset and Baseband Modem Chipset for Exynos 850, Exynos 980, Exynos 1080, Exynos 1280, Exynos 2200, Exynos Modem 5123, Exynos Modem 5300, and Exynos Auto T5123. A heap-based buffer overflow in the 5G MM message codec can occur due to insufficient parameter validation when decoding the extended emergency number list.


Affected SoftwareAffected VersionHow to fix
Samsung Exynos 850 Firmware
Samsung Exynos 850
Samsung Exynos 980 Firmware
Samsung Exynos 980
Samsung Exynos 1080 Firmware
Samsung Exynos 1080
Samsung Exynos 1280 Firmware
Samsung Exynos 1280
Samsung Exynos 2200 Firmware
Samsung Exynos 2200
Samsung Exynos Modem 5123 Firmware
Samsung Exynos Modem 5123
Samsung Exynos Modem 5300 Firmware
Samsung Exynos Modem 5300
Samsung Exynos Auto T5123 Firmware
Samsung Exynos Auto T5123
Samsung Exynos W920 Firmware
Samsung Exynos W920

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Frequently Asked Questions

  • What is CVE-2023-26073?

    CVE-2023-26073 is an issue in Samsung Mobile Chipset and Baseband Modem Chipset for various Exynos models that allows for a heap-based buffer overflow in the 5G MM message codec.

  • Which software versions are affected by CVE-2023-26073?

    CVE-2023-26073 affects Samsung Exynos 850 Firmware, Samsung Exynos 980 Firmware, Samsung Exynos 1080 Firmware, Samsung Exynos 1280 Firmware, Samsung Exynos 2200 Firmware, Samsung Exynos Modem 5123 Firmware, Samsung Exynos Modem 5300 Firmware, and Samsung Exynos Auto T5123 Firmware.

  • What is the severity of CVE-2023-26073?

    CVE-2023-26073 has a severity rating of 9.8 (Critical).

  • How can I fix CVE-2023-26073?

    To fix CVE-2023-26073, it is recommended to apply the latest firmware updates provided by Samsung for the affected Exynos chipsets and baseband modems.

  • Where can I find more information about CVE-2023-26073?

    You can find more information about CVE-2023-26073 at the following references: [Reference 1](, [Reference 2](, [Reference 3](


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