# CVE-2026-116790: FreeSWITCH: Inbound ICE connectivity checks are accepted without verifying STUN MESSAGE-INTEGRITY

Status: published. Published: 2026-11-05. Updated: 2026-11-09.

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.

## Remediation

- fix: FreeSWITCH (c): GitHub reports patched versions >= 1.11.2. Check the advisory for the affected release branch. (source: GitHub GHSA-rc25-33hp-6mv2) — https://github.com/signalwire/freeswitch/security/advisories/GHSA-rc25-33hp-6mv2

## Affected products and versions

- signalwire / freeswitch: < 1.11.2 (affected). Source: CNA: GitHub_M
-  / FreeSWITCH (FreeSWITCH): <= 1.11.1 (affected, GitHub advisory range). Source: GitHub GHSA-rc25-33hp-6mv2

## Severity and prioritization

- CVSS 3.1: 9.1 (critical); CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:H; source: CNA: GitHub_M

- CVSS 3.1: 9.1 (critical); CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:H; source: NVD: security-advisories@github.com

- CISA KEV: No listing in collected sources

- EPSS: 0.34% as of 2026-11-09; percentile 27.83%

- SSVC: exploitation none; automatable yes; technical impact total; source ADP: CISA-ADP

- Weaknesses: CWE-290, CWE-347

## 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-6mv2 (CNA: GitHub_M; x_refsource_CONFIRM)

- https://github.com/signalwire/freeswitch/commit/68ec688eb601767a28854e804a0e4df5872f5bc7 (CNA: GitHub_M; x_refsource_MISC)

- https://github.com/signalwire/freeswitch/releases/tag/v1.11.2 (CNA: GitHub_M; x_refsource_MISC)

- https://github.com/signalwire/freeswitch/commit/68ec688eb601767a28854e804a0e4df5872f5bc7 (security-advisories@github.com)

- https://github.com/signalwire/freeswitch/releases/tag/v1.11.2 (security-advisories@github.com)

- https://github.com/signalwire/freeswitch/security/advisories/GHSA-rc25-33hp-6mv2 (security-advisories@github.com)

- https://github.com/signalwire/freeswitch/security/advisories/GHSA-rc25-33hp-6mv2 (GitHub Security Advisories; advisory)

## Provenance

- CNA: GitHub_M: https://www.cve.org/CVERecord?id=CVE-2026-116790; retrieved 2026-11-09; source updated 2026-11-09

- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-116790; retrieved 2026-11-10; source updated 2026-11-09

- GitHub Security Advisories: https://github.com/signalwire/freeswitch/security/advisories/GHSA-rc25-33hp-6mv2; retrieved 2026-11-07; source updated 2026-10-28

- FIRST EPSS: https://api.first.org/data/v1/epss?cve=CVE-2026-116790; retrieved 2026-11-09; source updated Not reported

Revision: 082bb618facaad2220c9146c93e1d54c06b00b65a7e0495535291077b813a86e

Canonical: https://y2.dev/cve/CVE-2026-116790

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