Upstream information

CVE-2026-55200 at MITRE

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.

Other Security Trackers

SUSE information

Overall state of this security issue: Pending

This issue is currently rated as having important severity.

CVSS v3 Scores
CVSS detail CNA (VulnCheck) SUSE
Base Score 8.1 8.1
Vector CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
Attack Vector Network Network
Attack Complexity High High
Privileges Required None None
User Interaction None None
Scope Unchanged Unchanged
Confidentiality Impact High High
Integrity Impact High High
Availability Impact High High
CVSSv3 Version 3.1 3.1
CVSS v4 Scores
CVSS detail CNA (VulnCheck)
Base Score 9.2
Vector CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
Attack Vector Network
Attack Complexity Low
Attack Requirements Present
Privileges Required None
User Interaction None
Vulnerable System Confidentiality Impact High
Vulnerable System Integrity Impact High
Vulnerable System Availability Impact High
Subsequent System Confidentiality Impact None
Subsequent System Integrity Impact None
Subsequent System Availability Impact None
CVSSv4 Version 4.0
SUSE Bugzilla entry: 1268531 [NEW]

No SUSE Security Announcements cross referenced.


Status of this issue by product and package

Please note that this evaluation state might be work in progress, incomplete or outdated. Also information for service packs in the LTSS phase is only included for issues meeting the LTSS criteria. If in doubt, feel free to contact us for clarification. The updates are grouped by state of their lifecycle. SUSE product lifecycles are documented on the lifecycle page.

Product(s) Source package State
Products under general support and receiving all security fixes.
SUSE Linux Enterprise Desktop 15 SP7 libssh2_org Not affected
SUSE Linux Enterprise High Performance Computing 15 SP7 libssh2_org Not affected
SUSE Linux Enterprise Micro 5.3 libssh2_org Not affected
SUSE Linux Enterprise Micro 5.4 libssh2_org Not affected
SUSE Linux Enterprise Micro 5.5 libssh2_org Not affected
SUSE Linux Enterprise Module for Basesystem 15 SP7 libssh2_org Not affected
SUSE Linux Enterprise Server 15 SP7 libssh2_org Not affected
SUSE Linux Enterprise Server 16.0 libssh2_org Affected
SUSE Linux Enterprise Server 16.1 libssh2_org Affected
SUSE Linux Enterprise Server for SAP Applications 15 SP7 libssh2_org Not affected
SUSE Linux Enterprise Server for SAP applications 16.0 libssh2_org Affected
SUSE Linux Enterprise Server for SAP applications 16.1 libssh2_org Affected
SUSE Linux Micro 6.0 libssh2_org Not affected
SUSE Linux Micro 6.1 libssh2_org Not affected
SUSE Linux Micro 6.2 libssh2_org Affected
openSUSE Leap 16.0 libssh2_org Affected
Products under Long Term Service Pack support and receiving important and critical security fixes.
SUSE Linux Enterprise High Performance Computing 15 SP4 libssh2_org Not affected
SUSE Linux Enterprise High Performance Computing 15 SP4-LTSS libssh2_org Not affected
SUSE Linux Enterprise High Performance Computing 15 SP5 libssh2_org Not affected
SUSE Linux Enterprise High Performance Computing 15 SP5-LTSS libssh2_org Not affected
SUSE Linux Enterprise Module for Basesystem 15 SP4 libssh2_org Not affected
SUSE Linux Enterprise Module for Basesystem 15 SP5 libssh2_org Not affected
SUSE Linux Enterprise Module for Basesystem 15 SP6 libssh2_org Not affected
SUSE Linux Enterprise Server 12 SP5 libssh2_org Not affected
SUSE Linux Enterprise Server 12 SP5-LTSS libssh2_org Not affected
SUSE Linux Enterprise Server 12 SP5-LTSS Extended Security libssh2_org Not affected
SUSE Linux Enterprise Server 15 SP4 libssh2_org Not affected
SUSE Linux Enterprise Server 15 SP4-LTSS libssh2_org Not affected
SUSE Linux Enterprise Server 15 SP5 libssh2_org Not affected
SUSE Linux Enterprise Server 15 SP5-LTSS libssh2_org Not affected
SUSE Linux Enterprise Server 15 SP6 libssh2_org Not affected
SUSE Linux Enterprise Server 15 SP6-LTSS libssh2_org Not affected
SUSE Linux Enterprise Server LTSS Extended Security 12 SP5 libssh2_org Not affected
SUSE Linux Enterprise Server for SAP Applications 12 SP5 libssh2_org Not affected
SUSE Linux Enterprise Server for SAP Applications 15 SP6 libssh2_org Not affected
SUSE Manager Proxy 4.3 libssh2_org Not affected
SUSE Manager Proxy LTS 4.3 libssh2_org Not affected
SUSE Manager Retail Branch Server 4.3 libssh2_org Not affected
SUSE Manager Retail Branch Server LTS 4.3 libssh2_org Not affected
SUSE Manager Server 4.3 libssh2_org Not affected
SUSE Manager Server LTS 4.3 libssh2_org Not affected
Products past their end of life and not receiving proactive updates anymore.
HPE Helion OpenStack 8 libssh2_org Not affected
SUSE CaaS Platform 3.0 libssh2_org Not affected
SUSE CaaS Platform 4.0 libssh2_org Not affected
SUSE Enterprise Storage 6 libssh2_org Not affected
SUSE Enterprise Storage 7 libssh2_org Not affected
SUSE Enterprise Storage 7.1 libssh2_org Not affected
SUSE Linux Enterprise Desktop 12 libssh2_org Not affected
SUSE Linux Enterprise Desktop 12 SP1 libssh2_org Not affected
SUSE Linux Enterprise Desktop 12 SP2 libssh2_org Not affected
SUSE Linux Enterprise Desktop 12 SP3 libssh2_org Not affected
SUSE Linux Enterprise Desktop 12 SP4 libssh2_org Not affected
SUSE Linux Enterprise Desktop 15 libssh2_org Not affected
SUSE Linux Enterprise Desktop 15 SP1 libssh2_org Not affected
SUSE Linux Enterprise Desktop 15 SP2 libssh2_org Not affected
SUSE Linux Enterprise Desktop 15 SP3 libssh2_org Not affected
SUSE Linux Enterprise Desktop 15 SP4 libssh2_org Not affected
SUSE Linux Enterprise Desktop 15 SP5 libssh2_org Not affected
SUSE Linux Enterprise Desktop 15 SP6 libssh2_org Not affected
SUSE Linux Enterprise High Performance Computing 15 libssh2_org Not affected
SUSE Linux Enterprise High Performance Computing 15 SP1 libssh2_org Not affected
SUSE Linux Enterprise High Performance Computing 15 SP1-ESPOS libssh2_org Not affected
SUSE Linux Enterprise High Performance Computing 15 SP1-LTSS libssh2_org Not affected
SUSE Linux Enterprise High Performance Computing 15 SP2 libssh2_org Not affected
SUSE Linux Enterprise High Performance Computing 15 SP2-ESPOS libssh2_org Not affected
SUSE Linux Enterprise High Performance Computing 15 SP2-LTSS libssh2_org Not affected
SUSE Linux Enterprise High Performance Computing 15 SP3 libssh2_org Not affected
SUSE Linux Enterprise High Performance Computing 15 SP3-ESPOS libssh2_org Not affected
SUSE Linux Enterprise High Performance Computing 15 SP3-LTSS libssh2_org Not affected
SUSE Linux Enterprise High Performance Computing 15 SP4-ESPOS libssh2_org Not affected
SUSE Linux Enterprise High Performance Computing 15 SP5-ESPOS libssh2_org Not affected
SUSE Linux Enterprise High Performance Computing 15 SP6 libssh2_org Not affected
SUSE Linux Enterprise High Performance Computing 15-ESPOS libssh2_org Not affected
SUSE Linux Enterprise High Performance Computing 15-LTSS libssh2_org Not affected
SUSE Linux Enterprise Micro 5.0 libssh2_org Not affected
SUSE Linux Enterprise Micro 5.1 libssh2_org Not affected
SUSE Linux Enterprise Micro 5.2 libssh2_org Not affected
SUSE Linux Enterprise Module for Basesystem 15 libssh2_org Not affected
SUSE Linux Enterprise Module for Basesystem 15 SP1 libssh2_org Not affected
SUSE Linux Enterprise Module for Basesystem 15 SP2 libssh2_org Not affected
SUSE Linux Enterprise Module for Basesystem 15 SP3 libssh2_org Not affected
SUSE Linux Enterprise Point of Sale 12 SP2-CLIENT libssh2_org Not affected
SUSE Linux Enterprise Real Time 15 SP2 libssh2_org Not affected
SUSE Linux Enterprise Real Time 15 SP3 libssh2_org Not affected
SUSE Linux Enterprise Real Time 15 SP4 libssh2_org Not affected
SUSE Linux Enterprise Server 12 libssh2_org Not affected
SUSE Linux Enterprise Server 12 SP1 libssh2_org Not affected
SUSE Linux Enterprise Server 12 SP1-LTSS libssh2_org Not affected
SUSE Linux Enterprise Server 12 SP2 libssh2_org Not affected
SUSE Linux Enterprise Server 12 SP2-BCL libssh2_org Not affected
SUSE Linux Enterprise Server 12 SP2-ESPOS libssh2_org Not affected
SUSE Linux Enterprise Server 12 SP2-LTSS libssh2_org Not affected
SUSE Linux Enterprise Server 12 SP3 libssh2_org Not affected
SUSE Linux Enterprise Server 12 SP3-BCL libssh2_org Not affected
SUSE Linux Enterprise Server 12 SP3-ESPOS libssh2_org Not affected
SUSE Linux Enterprise Server 12 SP3-LTSS libssh2_org Not affected
SUSE Linux Enterprise Server 12 SP4 libssh2_org Not affected
SUSE Linux Enterprise Server 12 SP4-ESPOS libssh2_org Not affected
SUSE Linux Enterprise Server 12 SP4-LTSS libssh2_org Not affected
SUSE Linux Enterprise Server 12-LTSS libssh2_org Not affected
SUSE Linux Enterprise Server 15 libssh2_org Not affected
SUSE Linux Enterprise Server 15 SP1 libssh2_org Not affected
SUSE Linux Enterprise Server 15 SP1-BCL libssh2_org Not affected
SUSE Linux Enterprise Server 15 SP1-LTSS libssh2_org Not affected
SUSE Linux Enterprise Server 15 SP2 libssh2_org Not affected
SUSE Linux Enterprise Server 15 SP2-BCL libssh2_org Not affected
SUSE Linux Enterprise Server 15 SP2-LTSS libssh2_org Not affected
SUSE Linux Enterprise Server 15 SP3 libssh2_org Not affected
SUSE Linux Enterprise Server 15 SP3-BCL libssh2_org Not affected
SUSE Linux Enterprise Server 15 SP3-LTSS libssh2_org Not affected
SUSE Linux Enterprise Server 15-LTSS libssh2_org Not affected
SUSE Linux Enterprise Server for Raspberry Pi 12 SP2 libssh2_org Not affected
SUSE Linux Enterprise Server for SAP Applications 12 libssh2_org Not affected
SUSE Linux Enterprise Server for SAP Applications 12 SP1 libssh2_org Not affected
SUSE Linux Enterprise Server for SAP Applications 12 SP2 libssh2_org Not affected
SUSE Linux Enterprise Server for SAP Applications 12 SP3 libssh2_org Not affected
SUSE Linux Enterprise Server for SAP Applications 12 SP4 libssh2_org Not affected
SUSE Linux Enterprise Server for SAP Applications 15 libssh2_org Not affected
SUSE Linux Enterprise Server for SAP Applications 15 SP1 libssh2_org Not affected
SUSE Linux Enterprise Server for SAP Applications 15 SP2 libssh2_org Not affected
SUSE Linux Enterprise Server for SAP Applications 15 SP3 libssh2_org Not affected
SUSE Linux Enterprise Server for SAP Applications 15 SP4 libssh2_org Not affected
SUSE Linux Enterprise Server for SAP Applications 15 SP5 libssh2_org Not affected
SUSE Linux Enterprise Software Development Kit 12 libssh2_org Not affected
SUSE Linux Enterprise Software Development Kit 12 SP1 libssh2_org Not affected
SUSE Linux Enterprise Software Development Kit 12 SP2 libssh2_org Not affected
SUSE Linux Enterprise Software Development Kit 12 SP3 libssh2_org Not affected
SUSE Linux Enterprise Software Development Kit 12 SP4 libssh2_org Not affected
SUSE Linux Enterprise Software Development Kit 12 SP5 libssh2_org Not affected
SUSE Manager Proxy 4.0 libssh2_org Not affected
SUSE Manager Proxy 4.1 libssh2_org Not affected
SUSE Manager Proxy 4.2 libssh2_org Not affected
SUSE Manager Retail Branch Server 4.0 libssh2_org Not affected
SUSE Manager Retail Branch Server 4.1 libssh2_org Not affected
SUSE Manager Retail Branch Server 4.2 libssh2_org Not affected
SUSE Manager Server 4.0 libssh2_org Not affected
SUSE Manager Server 4.1 libssh2_org Not affected
SUSE Manager Server 4.2 libssh2_org Not affected
SUSE OpenStack Cloud 7 libssh2_org Not affected
SUSE OpenStack Cloud 8 libssh2_org Not affected
SUSE OpenStack Cloud 9 libssh2_org Not affected
SUSE OpenStack Cloud Crowbar 8 libssh2_org Not affected
SUSE OpenStack Cloud Crowbar 9 libssh2_org Not affected
openSUSE Leap 15.3 libssh2_org Not affected
openSUSE Leap 15.4 libssh2_org Not affected
openSUSE Leap 15.5 libssh2_org Not affected
openSUSE Leap 15.6 libssh2_org Not affected
openSUSE Leap Micro 5.2 libssh2_org Not affected
openSUSE Leap Micro 5.3 libssh2_org Not affected
openSUSE Leap Micro 5.4 libssh2_org Not affected
openSUSE Leap Micro 5.5 libssh2_org Not affected


SUSE Timeline for this CVE

CVE page created: Thu Jun 18 00:09:09 2026
CVE page last modified: Thu Jun 18 15:30:17 2026