ESB-2026.3815 — Vulnetix

ESB-2026.3815 PUBLISHED CVSS 7.5 HIGH

=========================================================================== AUSCERT External Security Bulletin Redistribution ESB-2026.3815 Security update for openssl-3 17 April 2026 =========================================================================== AUSCERT Security Bulletin Summary --------------------------------- Product: openssl-3 Publisher: SUSE Operating System: SUSE Resolution: Patch/Upgrade CVE Names: CVE-2026-2673 CVE-2026-28387 CVE-2026-28388 CVE-2026-28389 CVE-2026-28390 CVE-2026-31789 CVE-2026-31790 Original Bulletin: https://www.suse.com/support/update/announcement/2026/suse-su-202621107-1 Comment: CVSS (Max): 7.5 CVE-2026-28388 (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H) CVSS Source: [CISA-ADP], 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:N/A:H EPSS (Max): 0.1% (18th) CVE-2026-28390 2026-04-15 - --------------------------BEGIN INCLUDED TEXT-------------------- Security update for openssl-3 Announcement ID: SUSE-SU-2026:21107-1 Release Date: 2026-04-13T16:22:41Z Rating: important o bsc#1259652 o bsc#1260441 o bsc#1260442 o bsc#1260443 References: o bsc#1260444 o bsc#1260445 o bsc#1261678 o jsc#PED-15724 o CVE-2026-2673 o CVE-2026-28387 o CVE-2026-28388 Cross-References: o CVE-2026-28389 o CVE-2026-28390 o CVE-2026-31789 o CVE-2026-31790 o CVE-2026-2673 ( SUSE ): 6.3 CVSS:4.0/AV:N/AC:H/AT:P/PR:N/ UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N o CVE-2026-2673 ( SUSE ): 5.3 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/ S:U/C:L/I:N/A:N o CVE-2026-2673 ( NVD ): 7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/ S:U/C:H/I:N/A:N o CVE-2026-28387 ( SUSE ): 6.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N /S:U/C:N/I:L/A:L o CVE-2026-28388 ( NVD ): 7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/ S:U/C:N/I:N/A:H o CVE-2026-28389 ( SUSE ): 5.3 CVSS:3.1/AV:N/AC:L/PR:N/UI:N /S:U/C:N/I:N/A:L o CVE-2026-28389 ( NVD ): 7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/ CVSS scores: S:U/C:N/I:N/A:H o CVE-2026-28390 ( SUSE ): 8.2 CVSS:4.0/AV:N/AC:L/AT:P/PR:N /UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N o CVE-2026-28390 ( SUSE ): 5.9 CVSS:3.1/AV:N/AC:H/PR:N/UI:N /S:U/C:N/I:N/A:H o CVE-2026-28390 ( NVD ): 7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/ S:U/C:N/I:N/A:H o CVE-2026-31789 ( SUSE ): 7.3 CVSS:3.1/AV:N/AC:L/PR:N/UI:N /S:U/C:L/I:L/A:L o CVE-2026-31790 ( SUSE ): 6.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N /S:U/C:L/I:N/A:L o CVE-2026-31790 ( NVD ): 7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/ S:U/C:H/I:N/A:N Affected o SUSE Linux Micro 6.2 Products: An update that solves seven vulnerabilities and contains one feature can now be installed. Description: This update for openssl-3 fixes the following issues: Security issues fixed: o CVE-2026-2673: TLS 1.3 servers may choose unexpected key agreement group (bsc#1259652). o CVE-2026-28387: potential use-after-free in DANE client code (bsc#1260441). o CVE-2026-28388: NULL pointer dereference when processing a delta (bsc# 1260442). o CVE-2026-28389: possible NULL pointer dereference when processing CMS KeyAgreeRecipientInfo (bsc#1260443). o CVE-2026-28390: NULL pointer dereference during processing of a crafted CMS EnvelopedData message with KeyTransportRecipientInfo (bsc#1261678). o CVE-2026-31789: heap buffer overflow in hexadecimal conversion (bsc# 1260444). o CVE-2026-31790: incorrect failure handling in RSA KEM RSASVE encapsulation (bsc#1260445). Other updates and bugfixes: o Enable MD2 in legacy provider (jsc#PED-15724). 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 Micro 6.2 zypper in -t patch SUSE-SL-Micro-6.2-547=1 Package List: o SUSE Linux Micro 6.2 (aarch64 ppc64le s390x x86_64) libopenssl3-3.5.0-160000.7.1 libopenssl-3-fips-provider-debuginfo-3.5.0-160000.7.1 openssl-3-debugsource-3.5.0-160000.7.1 libopenssl-3-fips-provider-3.5.0-160000.7.1 openssl-3-debuginfo-3.5.0-160000.7.1 openssl-3-3.5.0-160000.7.1 libopenssl3-debuginfo-3.5.0-160000.7.1 libopenssl-3-devel-3.5.0-160000.7.1 References: o https://www.suse.com/security/cve/CVE-2026-2673.html o https://www.suse.com/security/cve/CVE-2026-28387.html o https://www.suse.com/security/cve/CVE-2026-28388.html o https://www.suse.com/security/cve/CVE-2026-28389.html o https://www.suse.com/security/cve/CVE-2026-28390.html o https://www.suse.com/security/cve/CVE-2026-31789.html o https://www.suse.com/security/cve/CVE-2026-31790.html o https://bugzilla.suse.com/show_bug.cgi?id=1259652 o https://bugzilla.suse.com/show_bug.cgi?id=1260441 o https://bugzilla.suse.com/show_bug.cgi?id=1260442 o https://bugzilla.suse.com/show_bug.cgi?id=1260443 o https://bugzilla.suse.com/show_bug.cgi?id=1260444 o https://bugzilla.suse.com/show_bug.cgi?id=1260445 o https://bugzilla.suse.com/show_bug.cgi?id=1261678 o https://jira.suse.com/browse/PED-15724 - --------------------------END INCLUDED TEXT---------------------- You have received this e-mail bulletin as a result of your organisation's registration with AUSCERT. 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Risk Scores

CVSS v3.1

7.5

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Affected Products

Vendor	Product	Versions
SUSE	openssl-3

Timeline

Apr 17, 2026 CVE Published

References

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