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    CVE-2026-52134

    An issue in the parseGoosePayload() function (/goose/goose_receiver.c) of libiec61850 v1.6 allows attackers to bypass authentication via a captured GOOSE frame.

    Published:Jul 31, 2026
    Last Modified:Aug 5, 2026
    EPS:Jul 31, 2026
    EPSS Score:0.008
    CVSS Score:9.8

    Affected Products

    Vendor
    Mz-automation
    Product
    Libiec61850

    Exploits

    https://github.com/if-forget/CVE-2026-52134-libiec61850

    Common Weakness Enumeration

    CWE-284 Improper Access Control

    Related CVEs

    CVE-2026-19259 (CVSS 1.9) — A vulnerability has been found in MZ Automation libiec61850 up to 1.6.1. The affected element is the function …
    CVE-2026-19206 (CVSS 1.9) — A security flaw has been discovered in MZ Automation libiec61850 up to 1.6.1. This affects the function SVRece…
    CVE-2026-19108 (CVSS 1.9) — A vulnerability was found in MZ Automation libiec61850 up to 1.6.1. The affected element is the function delet…
    CVE-2026-18583 (CVSS 5.5) — A weakness has been identified in mz-automation libiec61850 up to 1.6.1. This issue affects the function check…
    CVE-2026-18582 (CVSS 5.5) — A security flaw has been discovered in mz-automation libiec61850 up to 1.6.1. This vulnerability affects the f…
    CVE-2026-66720 (CVSS 7.1) — The GOOSE subscriber component improperly validates the UTC timestamp field in unauthenticated IEC 61850 GOOS…
    CVE-2026-66369 (CVSS 7.1) — The GOOSE parser contains an off-by-one boundary-handling flaw that can be triggered by a single unauthentica…
    CVE-2026-63550 (CVSS 7.1) — The MMS BER decoder contains a boundary-handling flaw in the processing of certain fields within confirmed-re…
    CVE-2026-65421 (CVSS 7.1) — The MMS BER decoder contains a flaw in decoding fixed-width BER fields (boolean/integer): an attacker-supplie…
    CVE-2026-66364 (CVSS 7.1) — The GOOSE payload parser contains a boundary handling flaw that can be triggered by a single unauthenticated …

    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