No advisories yet.
Solution
No solution given by the vendor.
Workaround
No workaround given by the vendor.
Tue, 09 Jun 2026 19:00:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| First Time appeared |
Signalwire
Signalwire freeswitch |
|
| Vendors & Products |
Signalwire
Signalwire freeswitch |
Tue, 09 Jun 2026 17:30:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| Metrics |
ssvc
|
Tue, 09 Jun 2026 16:30:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| 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 1.11.1, esl_recv_event() parses Content-Length with atol() and passes the result straight to malloc(len + 1) with no sign or magnitude check. A malicious or man-in-the-middle ESL peer can send a frame with a negative Content-Length to corrupt the heap of, or crash, any process linked against libesl, before the client has authenticated to that peer. This issue has been patched in version 1.11.1. | |
| Title | FreeSWITCH: Pre-authentication heap buffer overflow in libesl `Content-Length` parsing | |
| Weaknesses | CWE-122 CWE-195 CWE-20 CWE-787 |
|
| References |
| |
| Metrics |
cvssV3_1
|
Projects
Sign in to view the affected projects.
Status: PUBLISHED
Assigner: GitHub_M
Published:
Updated: 2026-06-09T17:00:21.313Z
Reserved: 2026-06-01T18:50:36.056Z
Link: CVE-2026-49840
Updated: 2026-06-09T17:00:09.680Z
Status : Undergoing Analysis
Published: 2026-06-09T17:17:47.703
Modified: 2026-06-09T19:32:29.743
Link: CVE-2026-49840
No data.
OpenCVE Enrichment
Updated: 2026-06-09T18:45:06Z