CVE-2026-49841: falha crítica em signalwire freeswitch
FreeSWITCH: Pre-authentication heap buffer overflow in `mod_verto` HTTP POST body read
Publicada em · Atualizada em
Aviso por e-mail quando ela entrar no KEV, ganhar PoC pública ou subir de nota.
28Vexday Risk Score
Sem sinal de exploração. Nenhum artefato público de exploração conhecido até agora.
ssvc Trackcvss 9.8epss 0.4%
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.
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Produtos afetados
signalwire · freeswitchCVEs relacionadas — signalwire freeswitch
No mesmo produto, das mais perigosas para as menos.
CVE-2026-116779CRITICALFreeSWITCH: Inbound SIP MESSAGE can select the api chat proto and run FreeSWITCH API commandsEPSS 1.3%KEVCVE-2021-37624HIGHFreeSWITCH does not authenticate SIP MESSAGE requests, leading to spam and message spoofingEPSS 3.8%CVE-2021-41105HIGHFreeSWITCH susceptible to Denial of Service via invalid SRTP packetsEPSS 2.5%CVE-2021-41157MEDIUMFreeSWITCH does not authenticate SIP SUBSCRIBE requests by defaultEPSS 1.7%CVE-2021-41145HIGHFreeSWITCH susceptible to Denial of Service via SIP floodingEPSS 1.7%CVE-2023-51443HIGHFreeSWITCH susceptible to Denial of Service via DTLS Hello packets during call initiationEPSS 1.5%