CVE-2026-116571

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_rtp2rtmpH264() built an AVC decoder configuration record in a fixed stack buffer by copying wire-derived SPS and PPS values without checking that their sizes and framing fit. An established H.264 call bridged toward an RTMP endpoint could supply oversized SPS and PPS parameter sets and overrun the function's stack frame. The flaw affects only deployments that build and load mod_rtmp and bridge RTP media into an RTMP leg; the module is disabled in the stock build and configuration. The corruption can abort FreeSWITCH and terminate every active call, and builds without stack protection receive a limited stack-write primitive, although code execution has not been demonstrated. This issue is fixed in version 1.11.2.

• CWE-121

• https://github.com/signalwire/freeswitch/commit/2ab0a534fdc25301daf95590e90a756a76bf0950
• https://github.com/signalwire/freeswitch/releases/tag/v1.11.2
• https://github.com/signalwire/freeswitch/security/advisories/GHSA-qmh2-f6cv-79mf

Published

Nov 5, 2026

Last Modified

Nov 5, 2026

Status

Awaiting Analysis

• How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
• Autonomous PentestingAI agents that find and validate exploitable vulnerabilities like this one across your applications.
• PR ReviewsPentest every pull request so vulnerable code is caught before it ships to production.
• AI Penetration TestingHow AI-driven penetration testing continuously covers your attack surface.

• CVE-2026-116566socket.getaddrinfo() previously accepted null bytes within *…5.3
• CVE-2026-116567FreeSWITCH is a Software Defined Telecom Stack enabling the …7.5
• CVE-2026-116568FreeSWITCH is a Software Defined Telecom Stack enabling the …7.5
• CVE-2026-116569FreeSWITCH is a Software Defined Telecom Stack enabling the …7.5
• CVE-2026-11657Use after free in Payments in Google Chrome on Mac prior to …8.8
• CVE-2026-116570FreeSWITCH is a Software Defined Telecom Stack enabling the …7.5
• CVE-2026-116572FreeSWITCH is an open-source software telecommunications pla…6.5
• CVE-2026-116573FreeSWITCH is an open-source software telecommunications pla…6.5
• CVE-2026-116574FreeSWITCH is a Software Defined Telecom Stack enabling the …5.9
• CVE-2026-116575Mem0 provides persistent memory infrastructure for AI agents…6.3
• CVE-2026-116576systeminformation is a System and OS information library for…7.8
• CVE-2026-116577Tornado is a Python web framework and asynchronous networkin…5.3