CVE-2026-49475

Description

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 version 1.11.0, a STUN packet whose declared attribute length is shorter than the structure the parser casts to causes the parser to read and write past the end of the attribute, producing an out-of-bounds memory access on the per-leg media buffer. This issue has been patched in version 1.11.0.

PUBLISHED Reserved 2026-05-30 | Published 2026-06-09 | Updated 2026-06-09 | Assigner GitHub_M

Problem types

CWE-20: Improper Input Validation

CWE-125: Out-of-bounds Read

CWE-787: Out-of-bounds Write

Product status

References

github.com/...switch/security/advisories/GHSA-9j6h-hc95-q926

github.com/signalwire/freeswitch/releases/tag/v1.11.0

cve.org (CVE-2026-49475)

nvd.nist.gov (CVE-2026-49475)

Download JSON