CVE-2026-49475
FreeSWITCH: Out-of-bounds memory access in core STUN attribute parsing
CVSS Score
7.5
EPSS Score
0.0%
EPSS Percentile
0th
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.
| CWE | CWE-20 CWE-125 CWE-787 |
| Vendor | signalwire |
| Product | freeswitch |
| Published | Jun 9, 2026 |
| Last Updated | Jun 9, 2026 |
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CVSS v3 Breakdown
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
None
Availability
High
Affected Versions
signalwire / freeswitch
< 1.11.0