CVE-2026-116569 (GCVE-0-2026-116569)

Vulnerability from cvelistv5 – Published: 2026-11-05 19:20 – Updated: 2026-11-09 22:39
VLAI
Title
FreeSWITCH: Pre-authentication out-of-bounds write in MSRP message body parsing
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, msrp_parse_buffer() subtracted delimiter framing from a peer-controlled short segment whose MSRP byte range ended in * without first proving the segment was long enough. The unsigned result wrapped near SIZE_MAX and reached switch_msrp_msg_set_payload() as both an allocation size and memcpy length, while related pointer arithmetic could read before the receive buffer. The listener is disabled by default in msrp.conf.xml, but any deployment enabling an MSRP TCP or TLS port parses this framing before authentication. An unauthenticated network peer can corrupt memory and crash FreeSWITCH, dropping all active calls, although remote code execution has not been demonstrated. This issue is fixed in version 1.11.2.
SSVC
Exploitation: none Automatable: yes Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-11-09 22:39 UTC
CWE
  • CWE-191 - Integer Underflow (Wrap or Wraparound)
  • CWE-787 - Out-of-bounds Write
Assigner
GitHub_M CNA
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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        "title": "CISA ADP Vulnrichment"
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