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    CVE-2026-93402

    A flaw was found in rsyslog. When using the imdtls input module configured for name or fingerprint authentication, permitted-peer identity checks are not enforced after a successful DTLS handshake. A remote attacker possessing a valid certificate signed by the listener's trusted Certificate Authority could bypass peer restrictions and inject unauthorized syslog records into the input stream.

    Published:Sep 22, 2026
    Last Modified:Sep 29, 2026
    EPS:N/A
    EPSS Score:
    CVSS Score:3.1

    Affected Products

    Vendor
    Rsyslog
    Product
    Rsyslog

    Exploits

    No exploit reference

    Common Weakness Enumeration

    CWE-287 Improper Authentication

    Related CVEs

    CVE-2026-92709 (CVSS 8.1) — Rsyslog is a rocket-fast system for log processing. From versions 1.15.0 to 8.2610.0, rsyslog's omfile dynaFil…
    CVE-2026-61548 (CVSS 8.1) — Rsyslog is a rocket-fast system for log processing. From 7.5.4 until 8.2606.0, the optional mmpstrucdata plugi…
    CVE-2026-55556 (CVSS 8.2) — Rsyslog is a rocket-fast system for log processing. From 8.2110.0 until 8.2604.0, the optional imhttp module's…
    CVE-2026-78002 (CVSS 7.5) — A flaw was found in rsyslog. An unauthenticated remote attacker can trigger a heap buffer overflow in the Rain…
    CVE-2026-19654 (CVSS 7.5) — A unauthenticated remote peer may lead rsyslogd to crash due to a flaw in the optional imptcp module. A crafte…
    CVE-2022-24903 (CVSS 8.1) — Rsyslog is a rocket-fast system for log processing. Modules for TCP syslog reception have a potential heap buf…
    CVE-2019-17042 (CVSS 9.8) — An issue was discovered in Rsyslog v8.1908.0. contrib/pmcisconames/pmcisconames.c has a heap overflow in the p…
    CVE-2019-17041 (CVSS 9.8) — An issue was discovered in Rsyslog v8.1908.0. contrib/pmaixforwardedfrom/pmaixforwardedfrom.c has a heap overf…
    CVE-2019-17040 (CVSS 9.8) — contrib/pmdb2diag/pmdb2diag.c in Rsyslog v8.1908.0 allows out-of-bounds access because the level length is mis…
    CVE-2017-12588 (CVSS 9.8) — The zmq3 input and output modules in rsyslog before 8.28.0 interpreted description fields as format strings, p…

    References

    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