[CVE-2026-55200] libssh2 through 1.11.1, fixed in commit 7acf3df contains an out-of-bounds write vulnerability in ssh…

Descripción técnica

libssh2 through 1.11.1, fixed in commit 7acf3df contains an out-of-bounds write vulnerability in ssh2_transport_read() that fails to enforce upper bounds on packet_length field. Remote attackers can send crafted SSH packets with excessively large packet_length values to corrupt heap memory and achieve remote code execution.

Puntuación CVSS

Score: 8.1/10 — Severidad: HIGH — Estado NIST: Analyzed

CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H

Productos afectados

Libssh2 — Libssh2

Debilidades (CWE)

CWE-680

Fuente oficial

Publicado en NIST NVD.