SUSE SLES16 Security Update : libssh (SUSE-SU-2026:21428-1)

high Nessus Plugin ID 312123

Synopsis

The remote SUSE host is missing one or more security updates.

Description

The remote SUSE Linux SLES16 / SLES_SAP16 host has packages installed that are affected by multiple vulnerabilities as referenced in the SUSE-SU-2026:21428-1 advisory.

- Update to version 0.11.4:
- CVE-2026-0964: SCP Protocol Path Traversal in ssh_scp_pull_request() (bsc#1258049)
- CVE-2026-0965: Possible Denial of Service when parsing unexpected configuration files (bsc#1258045)
- CVE-2026-0966: Buffer underflow in ssh_get_hexa() on invalid input (bsc#1258054)
- CVE-2026-0967: Specially crafted patterns could cause DoS (bsc#1258081)
- CVE-2026-0968: OOB Read in sftp_parse_longname() (bsc#1258080)
- CVE-2025-8114: Fix NULL pointer dereference after allocation failure (bsc#1246974)
- CVE-2025-8277: Fix memory leak of ephemeral key pair during repeated wrong KEX (bsc#1249375)

Tenable has extracted the preceding description block directly from the SUSE security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

Solution

Update the affected libssh-config, libssh-devel and / or libssh4 packages.

Plugin Details

Severity: High

ID: 312123

File Name: suse_SU-2026-21428-1.nasl

Version: 1.1

Type: Local

Agent: unix

Family: SuSE Local Security Checks

Published: 5/5/2026

Updated: 5/5/2026

Supported Sensors: Continuous Assessment, Nessus Agent, Nessus

Risk Information

VPR

Risk Factor: Medium

Score: 5.0

CVSS v2

Risk Factor: High

Base Score: 8.5

Temporal Score: 6.3

Vector: CVSS2#AV:N/AC:L/Au:N/C:N/I:P/A:C

CVSS Score Source: CVE-2026-0966

CVSS v3

Risk Factor: High

Base Score: 8.2

Temporal Score: 7.1

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

Temporal Vector: CVSS:3.0/E:U/RL:O/RC:C

Vulnerability Information

CPE: p-cpe:/a:novell:suse_linux:libssh-config, p-cpe:/a:novell:suse_linux:libssh-devel, p-cpe:/a:novell:suse_linux:libssh4, cpe:/o:novell:suse_linux:16

Required KB Items: Host/local_checks_enabled, Host/cpu, Host/SuSE/release, Host/SuSE/rpm-list

Exploit Ease: No known exploits are available

Patch Publication Date: 4/30/2026

Vulnerability Publication Date: 7/24/2025

Reference Information

CVE: CVE-2025-8114, CVE-2025-8277, CVE-2026-0964, CVE-2026-0965, CVE-2026-0966, CVE-2026-0967, CVE-2026-0968

IAVA: 2025-A-0692-S, 2026-A-0166

SuSE: SUSE-SU-2026:21428-1

Detections

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