An out of bounds read flaw was discovered in libssh2 before 1.8.1 in the way SFTP packets with empty payloads are parsed. A remote attacker who compromises a SSH server may be able to cause a Denial of Service or read data in the client memory.
Exploitability
AV:NAC:HPR:NUI:RScope
S:UImpact
C:LI:LA:L5/CVSS:3.0/AV:N/AC:H/PR:N/UI:R/S:U/C:L/I:L/A:LMemory Safety