CVE-2026-116779 SignalWire FreeSwitch Code Injection
- Exploited in the wild
- Since 9 Nov 2026
- Fix
- None listed
What is CVE-2026-116779?
CVE-2026-116779 is a critical vulnerability in signalwire freeswitch, published on 5 Nov 2026.
Official description
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 1.11.3, sofia_presence_handle_sip_i_message() split the To user of an inbound SIP MESSAGE on a plus sign and treated the left side as a chat protocol selector. Selecting the api chat proto reached switch_api_execute(), allowing a peer whose MESSAGE was accepted to run FreeSWITCH API commands, including operating-system command sinks, with the daemon's privileges. Inbound chat is enabled on the stock internal and external profiles, and any authenticated profile account is sufficient; stock directory users without password material can also remove that barrier in affected configurations. The flaw permits configuration and credential disclosure, arbitrary call control, and command execution, and exploitation has been observed in the wild. This issue is fixed in version 1.11.3.
Which versions are affected by CVE-2026-116779?
It affects 1 product.
Products include Freeswitch.
How do I fix CVE-2026-116779?
No fix has been published for CVE-2026-116779 yet. Limit exposure of the affected software until one is available. US federal agencies must fix it by 12 Nov 2026.
Is CVE-2026-116779 being exploited?
Yes. Attackers have exploited CVE-2026-116779 in the wild since at least 9 Nov 2026.
Public exploit code: 2 proofs of concept on GitHub.
Other vulnerabilities in signalwire freeswitch
- CVE-2026-49841 FreeSWITCH: Pre-authentication heap buffer overflow in `mod_verto` HTTP POST body read
- CVE-2019-19492 FreeSWITCH 1.6.10 through 1.10.1 has a default password in event_socket.conf.xml.
- CVE-2026-116785 FreeSWITCH: Pre-authentication heap out-of-bounds write in mod_xml_rpc WebSocket frame length handling
- CVE-2026-116790 FreeSWITCH: Inbound ICE connectivity checks are accepted without verifying STUN MESSAGE-INTEGRITY
- CVE-2026-49840 FreeSWITCH: Pre-authentication heap buffer overflow in libesl `Content-Length` parsing
Sources
Also known as GHSA-mg63-h38w-8p9p.