CVE Watch23 jul 2026

CVE-2026-49841

FreeSWITCH is a Software Defined Telecom Stack enabling the digital transformation from proprietary telecom switches to a software implement

CVSS

9.8

Crítico

EPSS

0.4%

p33

KEV

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Exploit Today

0-100

Publicado: 9 jun 2026 · Última mod.: 23 jul 2026 · CWE-122 · CWE-131

EPSS · 30d

0.4%EPSS · 30 días0.4%

2026-08-242026-09-22

Descripción técnica

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, the mod_verto HTTP request handler allocates a fixed 2 MiB buffer for a POST application/x-www-form-urlencoded body but accepts Content-Length up to just under 10 MiB. The body-read loop is bounded by Content-Length rather than the buffer size, producing an attacker-controlled heap overflow of up to ~8 MiB -- before the HTTP basic-auth check runs. This issue has been patched in version 1.11.1.

Referencias oficiales

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