CVE-2026-116779Critical· 9.8▾ AbyssalPoC availableFreeSWITCH 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()…
▾ Abyssal zone — Critical with a public exploit or in-the-wild use
impact 53.9 · likelihood 0 · exploitation 12
A public proof-of-concept already exists for this vulnerability — see Exploit availability below.
Public exploit / PoC code seen in 1 source. Availability, not in-the-wild use.
Disclosure to exploitation, from the record and what we observed since indexing it.
Disclosed via CVEORG
1 GitHub repo (last check)
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.
freeswitch < 1.11.3Refer to the linked advisories for vendor-supplied fixes and affected version ranges.
Connected by shared product, vendor, weakness, or advisory.
CVE-2026-116786High· 8.8FreeSWITCH: Channel-variable injection via SIP REFER leads to command execution in mod_sofia
CVE-2026-116568High· 7.5FreeSWITCH: Out-of-bounds read in mod_rtmp H.264 video message parsing
CVE-2026-116787High· 7.5FreeSWITCH: Pre-authentication process termination in the Event Socket via an unbounded Content-Length
CVE-2026-116572Medium· 6.5FreeSWITCH mod_sofia: stack buffer overflow from an over-long SIP Contact display-name
CVE-2026-116573Medium· 6.5FreeSWITCH mod_sofia: stack buffer overflow from an over-long SIP To-header user
CVE-2026-116784High· 7.5FreeSWITCH: Out-of-bounds read in RTCP NACK feedback parsing