CVE-2026-116790
FreeSWITCH: Inbound ICE connectivity checks are accepted without verifying STUN MESSAGE-INTEGRITY
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 1.11.2, FreeSWITCH's inbound ICE handling accepted every connectivity check without cryptographically validating its STUN MESSAGE-INTEGRITY attribute. A network peer able to reach an ICE-enabled leg's media port could forge an ICE connectivity check without SDP credentials, nominate its own address, redirect RTP and DTLS traffic, and terminate the legitimate media path. On unencrypted legs this enables eavesdropping and media injection, while all WebRTC and SIP legs that negotiate ICE are in scope. Version 1.11.2 introduces the remediation, which requires ice_verify_message_integrity=true.
Fixes and workarounds
Fix
FreeSWITCH (c): GitHub reports patched versions >= 1.11.2. Check the advisory for the affected release branch.
Source: GitHub GHSA-rc25-33hp-6mv2Affected products and versions
| Product | Versions | Authority |
|---|---|---|
| freeswitch signalwire |
< 1.11.2 (affected) | CNA: GitHub_M |
FreeSWITCHFreeSWITCH
c |
<= 1.11.1 (affected, GitHub advisory range) | GitHub GHSA-rc25-33hp-6mv2 |
Version ranges are source assertions. Check the vendor advisory and your installed configuration before determining exposure.
CVSS assessments
| Version / score | Vector | Authority |
|---|---|---|
| 3.1 / 9.1 critical |
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:H | CNA: GitHub_M |
| 3.1 / 9.1 critical |
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:H | NVD: [email protected] |
Exploit evidence
No exploit evidence in collected sources. This is not proof of no exploitation.
References
- https://github.com/signalwire/freeswitch/security/advisories/GHSA-rc25-33hp-6mv2CNA: GitHub_M · x_refsource_CONFIRM
- https://github.com/signalwire/freeswitch/commit/68ec688eb601767a28854e804a0e4df5872f5bc7CNA: GitHub_M · x_refsource_MISC
- https://github.com/signalwire/freeswitch/releases/tag/v1.11.2CNA: GitHub_M · x_refsource_MISC
- https://github.com/signalwire/freeswitch/commit/68ec688eb601767a28854e804a0e4df5872f5bc7[email protected]
- https://github.com/signalwire/freeswitch/releases/tag/v1.11.2[email protected]
- https://github.com/signalwire/freeswitch/security/advisories/GHSA-rc25-33hp-6mv2[email protected]
- https://github.com/signalwire/freeswitch/security/advisories/GHSA-rc25-33hp-6mv2GitHub Security Advisories · advisory
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