CVE-2026-116779

CVE Enrichment

CVSS: 9.8 CRITICAL
EPSS: 1.30%
EPSS Percentile: 70.63%
CISA KEV: YES — Known Exploited Vulnerability

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.

Technical Details

CVSS Version: 3.1
CNA / NVD Source: [email protected]
Published: 06-Nov-2026 03:17
Last Modified: 10-Nov-2026 12:17
EPSS Date: 2026-11-09
CWE: CWE-77, CWE-78, CWE-749

CVSS Vector


            CVSS:3.1                            AV:N /
                            AC:L /
                            PR:N /
                            UI:N /
                            S:U /
                            C:H /
                            I:H /
                            A:H

CISA KEV Details

Date Added: 2026-11-09
Remediation Due: 2026-11-12
Known Ransomware Campaign Use: Unknown
Required Action: Apply mitigations in accordance with vendor instructions, ensuring compliance with CISA’s BOD 26-04 Prioritizing Security Updates Based on Risk (see URL in Notes) guidance and CISA’s “Forensics Triage Requirements” (see URL in Notes). Follow applicable BOD 26-04 guidance for cloud services or discontinue use of the product if mitigations are unavailable. Stakeholders are responsible for evaluating each asset's internet exposure and ensuring adherence to BOD 26-04 patching guidelines.
Notes: This vulnerability affects an open-source component, third-party library, protocol, or proprietary implementation that could be used by different products. For more information, please see: https://github.com/signalwire/freeswitch/security/advisories/GHSA-mg63-h38w-8p9p ; BOD 26-04: https://www.cisa.gov/news-events/directives/bod-26-04-prioritizing-security-updates-based-risk ; Forensics Triage Requirements: https://www.cisa.gov/news-events/directives/bod-26-04-implementation-guidance-prioritizing-security-updates-based-risk ; https://nvd.nist.gov/vuln/detail/CVE-2026-116779

CNA Products / Version Status

signalwire · freeswitch Source: CNA · [email protected]
Default status: unknown

< 1.11.3 — affected

Affected Products / Versions

freeswitch / freeswitch Source: NVD CPE · affected
Version / affected range: * · before (exclusive) 1.11.3
cpe:2.3:a:freeswitch:freeswitch:*:*:*:*:*:*:*:*

References

Last enrichment sync: 10-Nov-2026 14:04
Sources: NVD · FIRST EPSS · CISA KEV
Latest successful provider update; providers refresh independently.

Reported Context (2)

Tracked as CVE-2026-116779 (CVSS score of 9.8), the SignalWire FreeSwitch bug is described as a code injection issue leading to sensitive information disclosure, arbitrary call control, and command execution. CISA Warns of Exploitation of IBM Aspera Faspex and FreeSWITCH Flaws
CVE-2026-116779 SignalWire FreeSwitch Code Injection Vulnerability CISA Adds Four Actively Exploited Vulnerabilities to KEV Catalog

CVE (3)

Vendors (4)

Products (4)

Note: Related entities, including threat actors, malware, CVEs, MITRE ATT&CK techniques, vendors, products, tools, countries, and industries, are shown when they appear in the same reporting. Their presence does not necessarily mean they were targeted, compromised, vulnerable, responsible for the activity, or directly involved in the incident.