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ESB-2026.3772 PUBLISHED CVSS 6.5 MEDIUM

=========================================================================== AUSCERT External Security Bulletin Redistribution ESB-2026.3772 Security update for libssh 16 April 2026 =========================================================================== AUSCERT Security Bulletin Summary --------------------------------- Product: libssh Publisher: SUSE Operating System: SUSE Resolution: Patch/Upgrade CVE Names: CVE-2026-0964 CVE-2026-0965 CVE-2026-0966 CVE-2026-0967 CVE-2026-0968 CVE-2026-3731 Original Bulletin: https://www.suse.com/support/update/announcement/2026/suse-su-20261344-1 Comment: CVSS (Max): 6.5 CVE-2026-0966 (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:L) CVSS Source: SUSE Calculator: https://www.first.org/cvss/calculator/3.1#CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:L EPSS (Max): 0.1% (29th) CVE-2026-3731 2026-04-15 - --------------------------BEGIN INCLUDED TEXT-------------------- Security update for libssh Announcement ID: SUSE-SU-2026:1344-1 Release Date: 2026-04-15T10:21:31Z Rating: moderate o bsc#1258045 o bsc#1258049 o bsc#1258054 References: o bsc#1258080 o bsc#1258081 o bsc#1259377 o CVE-2026-0964 o CVE-2026-0965 o CVE-2026-0966 Cross-References: o CVE-2026-0967 o CVE-2026-0968 o CVE-2026-3731 o CVE-2026-0964 ( SUSE ): 5.0 CVSS:3.1/AV:N/AC:H/PR:N/UI:R/ S:U/C:L/I:L/A:L o CVE-2026-0964 ( NVD ): 5.0 CVSS:3.0/AV:N/AC:H/PR:N/UI:R/ S:U/C:L/I:L/A:L o CVE-2026-0965 ( SUSE ): 3.3 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/ S:U/C:N/I:N/A:L o CVE-2026-0965 ( NVD ): 3.3 CVSS:3.0/AV:L/AC:L/PR:L/UI:N/ S:U/C:N/I:N/A:L o CVE-2026-0966 ( SUSE ): 6.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/ S:U/C:N/I:L/A:L o CVE-2026-0966 ( NVD ): 6.5 CVSS:3.0/AV:N/AC:L/PR:N/UI:N/ S:U/C:N/I:L/A:L o CVE-2026-0967 ( SUSE ): 1.0 CVSS:4.0/AV:L/AC:H/AT:N/PR:L/ UI:P/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N o CVE-2026-0967 ( SUSE ): 2.2 CVSS:3.1/AV:L/AC:H/PR:L/UI:R/ S:U/C:N/I:N/A:L o CVE-2026-0967 ( NVD ): 5.5 CVSS:3.1/AV:L/AC:L/PR:N/UI:R/ S:U/C:N/I:N/A:H o CVE-2026-0967 ( NVD ): 2.2 CVSS:3.0/AV:L/AC:H/PR:L/UI:R/ S:U/C:N/I:N/A:L o CVE-2026-0968 ( SUSE ): 2.1 CVSS:4.0/AV:N/AC:H/AT:N/PR:L/ CVSS scores: UI:P/VC:L/VI:N/VA:L/SC:N/SI:N/SA:N o CVE-2026-0968 ( SUSE ): 3.7 CVSS:3.1/AV:N/AC:H/PR:L/UI:R/ S:U/C:L/I:N/A:L o CVE-2026-0968 ( NVD ): 3.1 CVSS:3.1/AV:N/AC:H/PR:N/UI:R/ S:U/C:N/I:N/A:L o CVE-2026-0968 ( NVD ): 3.1 CVSS:3.1/AV:N/AC:H/PR:N/UI:R/ S:U/C:N/I:N/A:L o CVE-2026-0968 ( NVD ): 3.1 CVSS:3.0/AV:N/AC:H/PR:N/UI:R/ S:U/C:N/I:N/A:L o CVE-2026-3731 ( SUSE ): 6.9 CVSS:4.0/AV:N/AC:L/AT:N/PR:N/ UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N o CVE-2026-3731 ( SUSE ): 5.3 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/ S:U/C:N/I:N/A:L o CVE-2026-3731 ( NVD ): 6.9 CVSS:4.0/AV:N/AC:L/AT:N/PR:N/ UI:N/VC:N/VI:N/VA:L/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 o CVE-2026-3731 ( NVD ): 5.3 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/ S:U/C:N/I:N/A:L o CVE-2026-3731 ( NVD ): 7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/ S:U/C:N/I:N/A:H o SUSE Linux Enterprise Server 12 SP5 Affected o SUSE Linux Enterprise Server 12 SP5 LTSS Extended Products: Security o SUSE Linux Enterprise Server for SAP Applications 12 SP5 An update that solves six vulnerabilities can now be installed. Description: This update for libssh fixes the following issues: o CVE-2026-3731: denial of service via out-of-bounds read in SFTP extension name handler (bsc#1259377). o CVE-2026-0964: SCP protocol path traversal in ssh_scp_pull_request() (bsc# 1258049). o CVE-2026-0965: possible denial of service when parsing unexpected configuration files (bsc#1258045). o CVE-2026-0966: buffer underflow in ssh_get_hexa() on invalid input (bsc# 1258054). o CVE-2026-0967: specially crafted patterns could cause a denial of service (bsc#1258081). o CVE-2026-0968: out-of-bounds read in sftp_parse_longname() (bsc#1258080). Patch Instructions: To install this SUSE update use the SUSE recommended installation methods like YaST online_update or "zypper patch". Alternatively you can run the command listed for your product: o SUSE Linux Enterprise Server 12 SP5 LTSS Extended Security zypper in -t patch SUSE-SLE-SERVER-12-SP5-LTSS-EXTENDED-SECURITY-2026-1344= 1 Package List: o SUSE Linux Enterprise Server 12 SP5 LTSS Extended Security (x86_64) libssh-devel-doc-0.6.3-12.28.1 References: o https://www.suse.com/security/cve/CVE-2026-0964.html o https://www.suse.com/security/cve/CVE-2026-0965.html o https://www.suse.com/security/cve/CVE-2026-0966.html o https://www.suse.com/security/cve/CVE-2026-0967.html o https://www.suse.com/security/cve/CVE-2026-0968.html o https://www.suse.com/security/cve/CVE-2026-3731.html o https://bugzilla.suse.com/show_bug.cgi?id=1258045 o https://bugzilla.suse.com/show_bug.cgi?id=1258049 o https://bugzilla.suse.com/show_bug.cgi?id=1258054 o https://bugzilla.suse.com/show_bug.cgi?id=1258080 o https://bugzilla.suse.com/show_bug.cgi?id=1258081 o https://bugzilla.suse.com/show_bug.cgi?id=1259377 - --------------------------END INCLUDED TEXT---------------------- You have received this e-mail bulletin as a result of your organisation's registration with AUSCERT. The mailing list you are subscribed to is maintained within your organisation, so if you do not wish to continue receiving these bulletins you should contact your local IT manager. If you do not know who that is, please send an email to auscert@auscert.org.au and we will forward your request to the appropriate person. NOTE: Third Party Rights This security bulletin is provided as a service to AUSCERT's members. As AUSCERT did not write the document quoted above, AUSCERT has had no control over its content. The decision to follow or act on information or advice contained in this security bulletin is the responsibility of each user or organisation, and should be considered in accordance with your organisation's site policies and procedures. AUSCERT takes no responsibility for consequences which may arise from following or acting on information or advice contained in this security bulletin. NOTE: This is only the original release of the security bulletin. It may not be updated when updates to the original are made. If downloading at a later date, it is recommended that the bulletin is retrieved directly from the author's website to ensure that the information is still current. Contact information for the authors of the original document is included in the Security Bulletin above. If you have any questions or need further information, please contact them directly. Previous advisories and external security bulletins can be retrieved from: https://portal.auscert.org.au/bulletins/ =========================================================================== AUSCERT The University of Queensland, Brisbane QLD 4072 Australia e: auscert@auscert.org.au t: +61 (0)7 3365 4417 Allies in Cyber Security ===========================================================================

Risk Scores

CVSS v3.1
6.5
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:L

Affected Products

VendorProductVersions
SUSElibssh

Timeline

References

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