libssh2 - Out-of-Bounds Write via Unchecked packet_length in transport.c
48Vexday Risk Score
Sin señal de explotación. Ella tiene prueba de concepto pública.
ssvc Attendcvss 9.2epss 2.0%
de la publicación al arma6 días
Publicada en NVD17 jun
1ª PoC+6d
probabilidad de explotación
2.0%top 21% de las CVE
explotación observada
noninguna fuente lo reporta
5 exploit(s) público(s)
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.
CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
Productos afectados
libssh2 · libssh2PoCs públicas encontradas — 5
githubgithub.com/0xBlackash/CVE-2026-55200★ 10githubgithub.com/xd20111/CVE-2026-55200★ 4githubgithub.com/kaleth4/CVE-2026-55200★ 0cve_referencegithub.com/bikini/exploitarium/tree/main/libssh2-cve-2026-55200-pocno verificadocve_referenceweb.archive.org/web/20260623211210/https://github.com/bikini/exploitarium/tree/main/libssh2-cve-2026-55200-pocno verificado⚠ Recursos públicos, para evaluar la exposición de sistemas que controlas o estás autorizado a probar. Prueba solo con autorización.
Referencias
https://github.com/libssh2/libssh2/commit/97acf3dfda80c91c3a8c9f2372546301d4a1a7a8https://github.com/libssh2/libssh2/pull/2052https://web.archive.org/web/20260623211210/https://github.com/bikini/exploitarium/tree/main/libssh2-cve-2026-55200-pochttps://www.vulncheck.com/advisories/libssh2-out-of-bounds-write-via-unchecked-packet-length-in-transport-c