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SUSE OpenSSL-1_1 Important Buffer Overflow DoS Vuln 2026-2403-1

suse
Calendar Grey June 16, 2026
Dist Suse Esm H88
SUSE releases security update for openssl-1_1 addressing five critical threats with detailed patch instructions.
An update that solves five vulnerabilities can now be installed.

Summary

## This update for openssl-1_1 fixes the following issues: * CVE-2026-45447: Heap Use-After-Free in OpenSSL PKCS7_verify() (bsc#1266357). * CVE-2026-42766: Possible NULL Dereference in Password-Based CMS Decryption (bsc#1266349). * CVE-2026-9076: Out-of-Bounds Read in CMS Password-Based Decryption (bsc#1266341). * CVE-2026-7383: Possible Heap Buffer Overflow in ASN.1 Multibyte String Conversion (bsc#1266340). * CVE-2026-34180: Heap Buffer Over-read in ASN.1 Content Parsing (bsc#1266342). ## 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: * SUSE Linux Enterprise Server 12 SP5 LTSS zypper in -t patch SUSE-SLE-SERVER-12-SP5-LTSS-2026-2403=1

Topics%20covered

Topics Covered

security advisory buffer overflow SuSE important openssl-1_1 decryption issue

References

* bsc#1266340

* bsc#1266341

* bsc#1266342

* bsc#1266349

* bsc#1266357

Cross-

* CVE-2026-34180

* CVE-2026-42766

* CVE-2026-45447

* CVE-2026-7383

* CVE-2026-9076

CVSS scores:

* CVE-2026-34180 ( SUSE ): 6.3

CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N

* CVE-2026-34180 ( SUSE ): 3.7 CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:L

* CVE-2026-34180 ( NVD ): 7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

* CVE-2026-42766 ( SUSE ): 6.8

CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:A/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N

* CVE-2026-42766 ( SUSE ): 5.7 CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:N/I:N/A:H

* CVE-2026-42766 ( NVD ): 5.9 CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H

* CVE-2026-45447 ( SUSE ): 7.7

CVSS:4.0/AV:N/AC:H/AT:P/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N

Severity
important
Lowest
Low
Medium
High
Critical

Announcement ID: SUSE-SU-2026:2403-1
Release Date: 2026-06-16T06:53:41Z
Rating: important

Topics%20covered

Topics Covered

security advisory buffer overflow SuSE important openssl-1_1 decryption issue

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