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Product · signalwire

freeswitch

38 known vulnerabilities.

All Critical High Medium Low Exploited only Public exploit

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  • High 7.5
    CVE-2026-116567 Public exploit

    FreeSWITCH: Pre-authentication stack buffer overflow in mod_rtmp control-message handling

    FreeSWITCH is a Software Defined Telecom Stack enabling the digital transformation from proprietary telecom switches to a software implementation that runs on any commodity hardware. Prior to 1.11.2, rtmp_handle_control() rendered an RTMP user-control message…

    signalwire freeswitch
  • High 7.5
    CVE-2021-37624 Public exploit

    FreeSWITCH does not authenticate SIP MESSAGE requests, leading to spam and message spoofing

    FreeSWITCH is a Software Defined Telecom Stack enabling the digital transformation from proprietary telecom switches to a software implementation that runs on any commodity hardware. Prior to version 1.10.7, FreeSWITCH does not authenticate SIP MESSAGE reques…

    signalwire freeswitch freeswitch Alpine