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    CVE-2021-45773

    A NULL pointer dereference in CS104_IPAddress_setFromString at src/iec60870/cs104/cs104_slave.c of lib60870 commit 0d5e76e can lead to a segmentation fault or application crash.

    Published:Jan 14, 2022
    Last Modified:Nov 21, 2024
    EPS:Jan 14, 2022
    EPSS Score:0.00281
    CVSS Score:7.5

    Affected Products

    Vendor
    Mz-automation
    Product
    Lib60870

    Exploits

    https://github.com/mz-automation/lib60870/issues/100https://github.com/mz-automation/lib60870/issues/100

    Common Weakness Enumeration

    CWE-476 NULL Pointer Dereference

    Common Attack Pattern Enumeration and Classification (CAPEC)

    No CAPEC recorded yet

    Related CVEs

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    CVE-2026-61893 (CVSS 6.9) — A crafted IEC 60870-5-104 I-frame with TypeID 104 (C_TS_NA_1) and an inflated object count causes TestCommand…
    CVE-2026-63033 (CVSS 6.9) — A crafted IEC 60870-5-104 I-frame with a declared object count exceeding what fits in the ASDU body causes In…
    CVE-2026-16002 (CVSS 8.8) — The affected product is vulnerable to an Out-of-bounds read, which may allow an attacker to crash the parsing …
    CVE-2026-51219 (CVSS 7.5) — A heap buffer overflow in the HighPriorityASDUQueue_hasUnconfirmedIMessages function of lib60870 v2.3.3 to v2.…
    CVE-2024-45971 (CVSS 9.8) — Multiple Buffer overflows in the MMS Client in MZ Automation LibIEC61850 before commit 1f52be9ddeae00e69cd43e4…
    CVE-2024-45970 (CVSS 9.8) — Multiple Buffer overflows in the MMS Client in MZ Automation LibIEC61850 before commit ac925fae8e281ac6defcd63…
    CVE-2023-23205 (CVSS 5.5) — An issue was discovered in lib60870 v2.3.2. There is a memory leak in lib60870/lib60870-C/examples/multi_clien…
    CVE-2021-21778 (CVSS 7.5) — A denial of service vulnerability exists in the ASDU message processing functionality of MZ Automation GmbH li…
    CVE-2019-6137 (CVSS 7.5) — An issue was discovered in lib60870 2.1.1. LinkLayer_setAddress in link_layer/link_layer.c has a NULL pointer …

    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