$ cve CVE-2026-116779 JSON

CVE-2026-116779 KEV

9.8

CRITICAL · CVSS 3.1 · EPSS 1.3% (pctl 71)

Patch first

On CISA KEV — known exploited in the wild, due 2026-11-12.

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.

Scoring

CVSS	9.8 (CRITICAL, v3.1)
Vector	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
EPSS	1.3% — more likely to be exploited than 71% of all CVEs
Weakness	CWE-77
On CISA KEV	yes — remediate by 2026-11-12
Public exploit	none known
Published	2026-11-05
Last modified	2026-11-10

CISA KEV

Name	SignalWire FreeSwitch Code Injection Vulnerability
Added	2026-11-09
Due	2026-11-12
Vendor / product	SignalWire / FreeSwitch
Ransomware use	none reported

Affected (1)

Vendor	Product
freeswitch	freeswitch

References

→ the Explorer · watch your stack · NVD