VULNERABILITY INTELLIGENCE

CVE-2019-3863

CVSS score7.5 HIGH
EPSS probability3.44%
CISA KEVNot currently listed
Published2019-03-25
Last modified2026-10-14
CVSS vectorCVSS:3.0/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H

Description

A flaw was found in libssh2 before 1.8.1 creating a vulnerability on the SSH client side. A server could send a multiple keyboard interactive response messages whose total length are greater than unsigned char max characters. This value is used by the SSH client as an index to copy memory causing in an out of bounds memory write error.

Weakness classification

  • CWE-190: Integer Overflow or Wraparound
  • CWE-787: Out-of-bounds Write

Primary references