PT-2026-47846 · Signalwire · Freeswitch

Published 2026-06-09 · Updated 2026-06-09 · CVE-2026-49475

Mitre

CVSS v3.1

7.5

High

Base vector

AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

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.

Fix

Out of bounds Read

Memory Corruption

RCE

Weakness Enumeration

CWE-125

CWE-787

CWE-20

Related Identifiers

CVE-2026-49475

Affected Products

Freeswitch

References · 3

• https://nvd.nist.gov/vuln/detail/CVE-2026-49475 · Security Note
• https://github.com/signalwire/freeswitch/releases/tag/v1.11.0 · Note
• https://github.com/signalwire/freeswitch/security/advisories/GHSA-9j6h-hc95-q926 · Note