CVE-2019-3856 HIGH

CVE-2019-3856

Vendor The Libssh2 Project
Product libssh2
Weakness CWE-190
Published March 25, 2019
Last update April 23, 2025

CVSS base score

7.5/10
Attack vector Network
Attack complexity High
Privileges required None
User interaction Required
Confidentiality High
Integrity High

CVSS vector

CVSS:3.0/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H

What the vulnerability does

01Description

An integer overflow flaw, which could lead to an out of bounds write, was discovered in libssh2 before 1.8.1 in the way keyboard prompt requests are parsed. A remote attacker who compromises a SSH server may be able to execute code on the client system when a user connects to the server.

Key dates

02Disclosure timeline

March 25, 2019 CVE published
April 23, 2025 Record updated