Vulnerability in FreeSWITCH Affects Software Defined Telecom Stack
CVE-2026-116790

9.1CRITICAL

Key Information:

Vendor

Signalwire

Status
Freeswitch
Vendor
CVE Published:
5 November 2026

What is CVE-2026-116790?

FreeSWITCH, a Software Defined Telecom Stack, has a vulnerability in its ICE handling mechanism prior to version 1.11.2. This flaw allows an attacker to manipulate ICE connectivity checks without proper authentication. By exploiting this vulnerability, an adversary could redirect RTP and DTLS traffic, which might lead to unauthorized access to media streams, eavesdropping, or even media insertion. The risk extends to WebRTC and SIP sessions negotiating ICE. Update to version 1.11.2, which includes a fix that enforces cryptographic validation of STUN MESSAGE-INTEGRITY attributes.

Affected Version(s)

freeswitch < 1.11.2

References

https://github.com/signalwire/freeswitch/security/advisor...
x_refsource_CONFIRM
https://github.com/signalwire/freeswitch/commit/68ec688eb...
x_refsource_MISC
https://github.com/signalwire/freeswitch/releases/tag/v1....
x_refsource_MISC

CVSS V3.1

Score:
9.1
Severity:
CRITICAL
Confidentiality:
None
Integrity:
High
Availability:
None
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

.