CVE-2026-116789
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, dtls_state_setup() compared a peer certificate with the SDP a=fingerprint only when FreeSWITCH was the DTLS client, not when it held the DTLS server role. An unauthenticated peer able to reach the negotiated media port could complete the DTLS-SRTP handshake with an unrelated certificate, obtain the leg's SRTP keys, decrypt and inject media, and displace the legitimate endpoint; on ICE-enabled legs the peer also needs the connectivity-check credentials from SDP, which generally requires signaling visibility or a position on its path. WebRTC and SIP DTLS-SRTP legs are affected whenever the peer selects the active role, while FreeSWITCH client-role handshakes already perform fingerprint validation. Version 1.11.2 introduces the remediation, which requires rtp_dtls_client_cert_verify_mode=fingerprint.
- Score
- 7.4 high
- Published
- 2026-11-05
- Links
- NVD · cve.org · Report wrong data
Matched ports (1)
| Port | Package | Version | Status | Maintainer |
|---|---|---|---|---|
| net/freeswitch | freeswitch | 1.11.1_3 | unaddressed | pi@FreeBSD.org |
Template for a VuXML entry
Check the version numbers before you commit this entry. Some ports share an entry in the CVE database with another port, such as sqlite2 and sqlite3. The version shown here may then be one that never existed for this port.
Ranges per package from the CVE rows that match this port, in pkg notation with the port's epoch and revision, every bound checked with pkg; one range per epoch the port actually had. make newentry in security/vuxml creates the vid.
<vuln vid="FIXME (make newentry)">
<topic>freeswitch -- FIXME</topic>
<affects>
<package>
<name>freeswitch</name>
<range><lt>1.11.2</lt></range>
</package>
</affects>
<description>
<body xmlns="http://www.w3.org/1999/xhtml">
<p>CVE-2026-116789: 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, dtls_state_setup() compared a peer
certificate with the SDP a=fingerprint only when FreeSWITCH was the
DTLS client, not when it held the DTLS server role. An
unauthenticated peer able to reach the negotiated media port could
complete the DTLS-SRTP handshake with an unrelated certificate,
obtain the leg's SRTP keys, decrypt and inject media, and displace
the legitimate endpoint; on ICE-enabled legs the peer also needs
the connectivity-check credentials from SDP, which generally
requires signaling visibility or a position on its path. WebRTC and
SIP DTLS-SRTP legs are affected whenever the peer selects the
active role, while FreeSWITCH client-role handshakes already
perform fingerprint validation. Version 1.11.2 introduces the
remediation, which requires
rtp_dtls_client_cert_verify_mode=fingerprint.</p>
</body>
</description>
<references>
<cvename>CVE-2026-116789</cvename>
<url>https://nvd.nist.gov/vuln/detail/CVE-2026-116789</url>
</references>
<dates>
<discovery>2026-11-05</discovery>
<entry>2026-11-05</entry>
</dates>
</vuln>