CVE-2019-3861

An out of bounds read flaw was discovered in libssh2 before 1.8.1 in the way SSH packets with a padding length value greater than the packet length 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.

CVSS 3.0

9.1CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H

EPSS

5.1% chance of exploitation in the next 30 days; higher than 92% of CVEs (scores of 2026-10-25)

CWE

CWE-125

Published

2019-03-25

Modified

2026-10-14

Record from

the NVD, synced 2026-10-19

Affected

• debian:debian_linux
• libssh2:libssh2
• netapp:ontap_select_deploy_administration_utility
• opensuse:leap

References

• http://lists.opensuse.org/opensuse-security-announce/2019-03/msg00040.html
• http://lists.opensuse.org/opensuse-security-announce/2019-04/msg00003.html
• https://access.redhat.com/errata/RHSA-2019:2136
• https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2019-3861
• https://lists.debian.org/debian-lts-announce/2019/03/msg00032.html

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