CVE Watch30 de out. de 2026

CVE-2026-92389

libcurl's TFTP state machine fails to validate state transitions against the requested transfer direction, accepting opening server response

CVSS

8.1

Alta

EPSS

0.7%

p54

KEV

—

Exploit Today

0-100

Publicado: 20 de out. de 2026 · Última mod.: 30 de out. de 2026 · CWE-200

EPSS · 30d

0.2%EPSS · 30 dias0.7%

2026-10-212026-11-07

Descrição técnica

libcurl's TFTP state machine fails to validate state transitions against the requested transfer direction, accepting opening server responses for both reads and writes interchangeably. A malicious TFTP server can respond to a download request in a way that forces the client into transmit mode, prompting libcurl to consume and transmit data from the handle's persistent `CURLOPT_READDATA` pointer - including data remaining from unrelated prior operations, such as an HTTP POST request executed on a reused handle.

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