Read the docs
TI-2026-85631 Aliases CVE-2026-116790

FreeSWITCH ICE checks lack STUN integrity validation, enabling media hijack

Priority LOW 39CWE-290Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
None
Attack complexity
Low
Impact type
Security bypass
Confidentiality · integrity · availability
None · High · High
Fix status
Fixed

Attack profile from CVSS 3.1 · CNA. Fix status from CNA. Impact type from CWE-290.

Summary

FreeSWITCH versions before 1.11.2 accept every inbound ICE connectivity check without validating the STUN MESSAGE-INTEGRITY attribute. A network peer that can reach an ICE-enabled leg's media port can forge a connectivity check without SDP credentials, nominate its own address, redirect RTP and DTLS traffic, and take over the legitimate media path. An unauthenticated remote attacker can do this, and it enables eavesdropping and media injection on unencrypted legs, affecting all WebRTC and SIP legs that negotiate ICE. The flaw is classified as CWE-290 (authentication bypass by spoofing).

Written with Claude Haiku 5.5 from the sources below · 2026-11-05

Description from the CNA

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.

Why it matters now

EPSS 0.00341 27th percentileScored 2026-11-07
Fix Fixed freeswitch (signalwire): 1.11.2

SSVC decision points

Not available: CISA has not published SSVC decision points for this record.

Affected products

VendorProductAffected versionsFixed inStatusSource
signalwirefreeswitchbefore 1.11.21.11.2Patch availableCNA
  • freeswitch Vendorsignalwire Affected before 1.11.2 Fixed in 1.11.2 Patch available CNA

CPE names Threatist (inferred) · 1

Inferred from how NVD named this product before; not given by a source.

CPEVersionsRoleVendor
cpe:2.3:a:freeswitch:freeswitch:*:*:*:*:*:*:*:*——freeswitch
  • cpe:2.3:a:freeswitch:freeswitch:*:*:*:*:*:*:*:* Versions — — ·freeswitch

Remediation

Upgrade FreeSWITCH to version 1.11.2, which introduces the fix and requires ice_verify_message_integrity=true.

Written with Claude Haiku 5.5 from the sources below · 2026-11-05

  • Fix · CNA freeswitch (signalwire) Fixed in 1.11.2

Timeline

  1. 2026-11-05 Threatist record created from CVE-2026-116790
  2. 2026-11-07 Priority changed: MEDIUM → LOW

References

Other 3

  • TI-2023-08915 heap-over-flow in stun_parse_attribute in sofia-sip CVSS 3.1CRITICAL 9.8
  • TI-2022-13049 Heap-based Buffer Overflow and Out-of-bounds Write in Sofia-SIP CVSS 3.1CRITICAL 9.8
  • TI-2023-28097 FreeSWITCH susceptible to Denial of Service via DTLS Hello packets during call initiation CVSS 3.1HIGH 7.5
  • TI-2023-20909 Resource allocation without limits in signalwire freeswitch CVSS 3.1HIGH 7.5
  • TI-2023-20908 FreeSWITCH allows remote users to trigger out of bounds write by offering an ICE candidate with unknown component ID CVSS 3.1HIGH 7.5
  • TI-2023-15601 heap-over-flow and integer-overflow in sofia-sip CVSS 3.1HIGH 7.5
See all 44 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences