CVE-2026-116779Freeswitch Freeswitch Command Injection

NVDCVSS scored by security-advisories@github.com

Vulnerability Summary

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.

Severity Level

CRITICAL(9.8)

Published Date

Nov 5, 2026

Last Modified

Nov 10, 2026

Exploitation Status

ACTIVE

CVE Record Status

Published

EPSS Score (30-Day)

2.47%Probability

Root Weakness (CWE)

CWE-77: Command Injection ↗

The product constructs all or part of a command using externally-influenced input but does not neutralize special elements that could modify the intended command.

CWE-78: OS Command Injection ↗

The software constructs all or part of an OS command using externally-influenced input, but does not properly neutralize special elements.

CWE-749 ↗

See the MITRE CWE entry for the full definition of this weakness.

CVSS v3.1 Base Metrics — Score 9.8 (CRITICAL)

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

Attack VectorNetwork

Attack ComplexityLow

Privileges RequiredNone

User InteractionNone

ScopeUnchanged

ConfidentialityHigh

IntegrityHigh

AvailabilityHigh

Affected & Patched Versions

Affected Versions

Freeswitch Freeswitch < 1.11.3

Patched Versions

Freeswitch Freeswitch 1.11.3

What to do

Patch now. CISA lists this flaw as exploited in the wild and set a federal remediation deadline of Nov 12, 2026.

Check whether you run Freeswitch Freeswitch and which version.
Update to a patched version listed above, then confirm the new version.
Review logs and exposed services for signs of earlier compromise.

CISA 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.

CISA KEV Status

Listed in Known Exploited Vulnerabilities

Added: Nov 9, 2026
Remediation due: Nov 12, 2026 (deadline passed)

Timeline

Nov 5, 2026Published
Nov 9, 2026Added to CISA KEV catalog
Nov 10, 2026Record last modified
Nov 12, 2026KEV remediation due date

Score, severity and exploitation changes are tracked from the day Watchtower started logging them.

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Related Coverage

External References

Data last checked: Nov 5, 2026 20:00 UTC