CVE Watch5 de nov. de 2026

CVE-2026-116780

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

CVSS

2.7

Baixa

EPSS

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KEV

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Exploit Today

0-100

Publicado: 5 de nov. de 2026 · Última mod.: 5 de nov. de 2026 · CWE-125 · CWE-200

EPSS · 30d

Ainda não há histórico EPSS suficiente.

Descrição 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 1.11.2, switch_event_expand_headers_check() advanced beyond its heap copy when a positive offset in ${variable:offset} exceeded the variable value's length. The following length calculation and copy appended adjacent heap memory to the expansion result, potentially exposing channel variables, credentials, allocator data, and pointer bytes. The flaw is reachable through configuration templates that slice remote input and through authenticated Event Socket eval or Event Socket expand commands; the separate channel-variable expander used by ordinary dialplan slicing is unaffected. The requester cannot choose adjacent memory and disclosure stops at a zero byte, but repeated expansion can influence the layout. This issue is fixed in version 1.11.2.

Referências oficiais

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