CVE-2026-55200HIGHCVSS 8.1

CVE-2026-55200

Published Jun 17, 2026·Updated Jul 1, 2026

Description

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.

Public Exploits & PoCs2 found

Community Discussion

CVSS Vector

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

References

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