CVE Watch6 ago 2026

CVE-2026-70637

LightFTP through 2.4 contains multiple data race vulnerabilities in ftpserv.c that allow anonymous attackers to cause undefined behavior by

CVSS

5.9

Medio

EPSS

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KEV

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Exploit Today

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0-100

Publicado: 6 ago 2026 · Última mod.: 6 ago 2026 · CWE-820

EPSS · 30d

Sin historial EPSS suficiente todavía.

Descripción técnica

LightFTP through 2.4 contains multiple data race vulnerabilities in ftpserv.c that allow anonymous attackers to cause undefined behavior by issuing LIST followed by ABOR commands without authentication. The control thread closes data_socket and file_fd descriptors while worker threads concurrently operate on the same fields in worker_thread_cleanup, allowing stale file descriptors to be reassigned by the OS and subsequently used by worker threads on unrelated resources, resulting in potential denial of service.

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