CVE-2026-116787 (GCVE-0-2026-116787)

Vulnerability from cvelistv5 – Published: 2026-11-05 19:24 – Updated: 2026-11-05 21:12
VLAI
Title
FreeSWITCH: Pre-authentication process termination in the Event Socket via an unbounded Content-Length
Summary
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, mod_event_socket used an unauthenticated Content-Length value directly as the allocation size for an Event Socket message body. Negative or extremely large values could overflow the terminator calculation or force an allocation failure through a helper that aborts the FreeSWITCH process. The header is parsed before the Event Socket password, so any host admitted by apply-inbound-acl can trigger termination with its first packet; the default loopback ACL limits ordinary installations to local clients. The outbound socket dialplan path is also affected when FreeSWITCH connects to a hostile application server, and process termination drops every active call until the service is restarted. This issue is fixed in version 1.11.2.
Severity
7.5 (High)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
SSVC
Exploitation: none Automatable: yes Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-11-05 21:12 UTC
CWE
  • CWE-190 - Integer Overflow or Wraparound
  • CWE-789 - Memory Allocation with Excessive Size Value
Assigner
GitHub_M CNA
References
Impacted products
Vendor Product Version
signalwire freeswitch Affected: < 1.11.2
Create a notification for this product.
Show details on NVD website
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