Technology · SignalWire
SignalWire Freeswitch vulnerabilities
Updated . Rebuilt every hour.
Junglewise Threat Intelligence has tracked 9 vulnerabilities in SignalWire Freeswitch: 0 in the last 7 days and 0 in the last 90 days, 2 of them critical and 0 exploited in the wild. The most recent, CVE-2026-49848, was published on 9 June 2026.
- Last 7 days
- 0
- Last 90 days
- 0
- Critical, all time
- 2
- Exploited in the wild
- 0
About SignalWire Freeswitch
FreeSWITCH is a scalable, open-source cross-platform telephony platform designed to route and interconnect popular communication protocols using audio, video, text, or any other form of media.
Latest SignalWire Freeswitch vulnerabilities
- CVE-2026-49848: FreeSWITCH mod_verto userVariables injection in check_authmediumCVSS 4.3
- CVE-2026-49847: FreeSWITCH stack overflow in cJSON parser via mod_vertohighCVSS 7.5
- CVE-2026-49843: FreeSWITCH improper authentication in mod_verto allows session evictionmediumCVSS 5.3
- CVE-2026-49842: SignalWire FreeSWITCH bandwidth amplification in mod_vertohighCVSS 7.5
- CVE-2026-49841: SignalWire FreeSWITCH heap overflow in mod_verto HTTP POST handlercriticalCVSS 9.8
- CVE-2026-49840: SignalWire FreeSWITCH heap buffer overflow in libesl Content-Length parsingcriticalCVSS 9.1
- CVE-2026-49475: SignalWire FreeSWITCH out-of-bounds memory access in STUN parserhighCVSS 7.5
- CVE-2026-49472: FreeSWITCH denial of service in XML-RPC via libexpat clonemediumCVSS 5.3
- CVE-2026-45771: FreeSWITCH XML entity expansion denial of service in SIP PUBLISHhighCVSS 7.5
Most severe SignalWire Freeswitch vulnerabilities
Exploited in the wild first, then by severity and CVSS score.
- CVE-2026-49841: SignalWire FreeSWITCH heap overflow in mod_verto HTTP POST handlercriticalCVSS 9.8
- CVE-2026-49840: SignalWire FreeSWITCH heap buffer overflow in libesl Content-Length parsingcriticalCVSS 9.1
- CVE-2026-49847: FreeSWITCH stack overflow in cJSON parser via mod_vertohighCVSS 7.5
- CVE-2026-49842: SignalWire FreeSWITCH bandwidth amplification in mod_vertohighCVSS 7.5
- CVE-2026-49475: SignalWire FreeSWITCH out-of-bounds memory access in STUN parserhighCVSS 7.5
- CVE-2026-45771: FreeSWITCH XML entity expansion denial of service in SIP PUBLISHhighCVSS 7.5
- CVE-2026-49843: FreeSWITCH improper authentication in mod_verto allows session evictionmediumCVSS 5.3
- CVE-2026-49472: FreeSWITCH denial of service in XML-RPC via libexpat clonemediumCVSS 5.3
- CVE-2026-49848: FreeSWITCH mod_verto userVariables injection in check_authmediumCVSS 4.3
Vulnerabilities per week
The last 13 weeks, by the week each vulnerability was published.
| Week of | Bar | Vulns | Critical |
|---|---|---|---|
| 29 Jun 2026 | 0 | 0 | |
| 6 Jul 2026 | 0 | 0 | |
| 13 Jul 2026 | 0 | 0 | |
| 20 Jul 2026 | 0 | 0 | |
| 27 Jul 2026 | 0 | 0 | |
| 3 Aug 2026 | 0 | 0 | |
| 10 Aug 2026 | 0 | 0 | |
| 17 Aug 2026 | 0 | 0 | |
| 24 Aug 2026 | 0 | 0 | |
| 31 Aug 2026 | 0 | 0 | |
| 7 Sep 2026 | 0 | 0 | |
| 14 Sep 2026 | 0 | 0 | |
| 21 Sep 2026 | 0 | 0 |
How this is built
Junglewise Threat Intelligence collects vulnerabilities from NVD, GitHub Security Advisories, OSV, the CISA Known Exploited Vulnerabilities catalog, FIRST EPSS and vendor advisories, and matches each one to the technologies and vendors it affects. Dates are the date a vulnerability was published, in UTC.
The pages are rebuilt from the database every hour. Frozen weekly and monthly reports never change once published, so they can be cited.
Use this data
The same data is at https://junglewise.ai/threats/technologies/freeswitch.json, for scripts and language models. It is free to reuse under CC BY 4.0 with a link back to this page.
Cite as: Junglewise Threat Intelligence, "SignalWire Freeswitch vulnerabilities", https://junglewise.ai/threats/technologies/freeswitch, 26 September 2026.