Link following in Opencryptoki - CVE-2026-23893

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Main Vulnerability Database Vulnerabilities #VU121687

Link following in Opencryptoki - CVE-2026-23893

Published: January 20, 2026


Vulnerability identifier: #VU121687
CSH Severity: Low
CVSS v4: 6.9 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:A/VC:H/VI:H/VA:L/SC:N/SI:N/SA:N]
CVE-ID: CVE-2026-23893
CWE-ID: CWE-59
Exploitation vector: Local access
Exploit availability: No public exploit available

Vulnerability details

The vulnerability allows a local user to escalate privileges on the system.

The vulnerability exists due to an insecure link following issue. A local user can create a specially crafted symbolic link to a critical file on the system and overwrite it with root privileges when an administrator runs a PKCS#11 application.


Affected software

Opencryptoki
SUSE Linux Enterprise Server 12 SP5 LTSS Extended
SUSE Linux Enterprise Server for SAP Applications 12
SUSE Linux Enterprise Server 12
SUSE Linux Enterprise Server for SAP Applications 15
SUSE Linux Enterprise Real Time 15
SUSE Linux Enterprise Server 15
SUSE Linux Enterprise Micro
SUSE Linux Enterprise Micro for Rancher
Red Hat Enterprise Linux for x86_64
Red Hat CodeReady Linux Builder for ARM 64
Red Hat CodeReady Linux Builder for IBM z Systems
Red Hat Enterprise Linux for IBM z Systems
Red Hat Enterprise Linux for Power, little endian
Red Hat Enterprise Linux for ARM 64
Red Hat CodeReady Linux Builder for x86_64
Red Hat CodeReady Linux Builder for Power, little endian
Anolis OS
Red Hat Enterprise Linux for x86_64 - Extended Update Support
Red Hat Enterprise Linux Server - AUS
Red Hat Enterprise Linux for IBM z Systems - Extended Update Support
Red Hat Enterprise Linux for Power, little endian - Extended Update Support
Red Hat Enterprise Linux for ARM 64 - Extended Update Support
Red Hat CodeReady Linux Builder for ARM 64 - Extended Update Support
Red Hat CodeReady Linux Builder for IBM z Systems - Extended Update Support
Red Hat CodeReady Linux Builder for Power, little endian - Extended Update Support
Red Hat CodeReady Linux Builder for x86_64 - Extended Update Support
Server Applications Module
openSUSE Leap
openEuler
Ubuntu
Fedora
Red Hat Enterprise Linux Server for Power LE - Update Services for SAP Solutions
opencryptoki (Ubuntu package)
openCryptoki-debugsource
openCryptoki-64bit
openCryptoki-debuginfo
openCryptoki
openCryptoki-devel
openCryptoki-64bit-debuginfo
openCryptoki-32bit
openCryptoki-32bit-debuginfo
opencryptoki-devel
opencryptoki-icsftok
opencryptoki-tpmtok
opencryptoki-libs
opencryptoki-swtok
opencryptoki
opencryptoki (Red Hat package)
openCryptoki-devel-debuginfo
opencryptoki-icsftok-debuginfo (Red Hat package)
opencryptoki-libs-debuginfo (Red Hat package)
opencryptoki-swtok-debuginfo (Red Hat package)
opencryptoki-debuginfo (Red Hat package)
opencryptoki-ep11tok-debuginfo (Red Hat package)
opencryptoki-icatok-debuginfo (Red Hat package)
opencryptoki-debugsource (Red Hat package)
opencryptoki-devel (Red Hat package)
opencryptoki-debuginfo
opencryptoki-debugsource
opencryptoki-help

How to mitigate CVE-2026-23893

Install updates from vendor's website.

opencryptoki (Ubuntu package) - addressed in versions 3.17.0+dfsg+20220202.b40982e-0ubuntu1.3, 3.23.0+dfsg-0ubuntu3.1, 3.26.0+dfsg-0ubuntu1.1
openCryptoki-debugsource - addressed in versions 3.17.0-5.19.2, 3.17.0-150400.4.11.1, 3.23.0-150500.3.12.1, 3.23.0-150600.3.14.1, 3.26.0-150700.5.12.1
openCryptoki-64bit - addressed in versions 3.17.0-5.19.2, 3.17.0-150400.4.11.1, 3.23.0-150500.3.12.1, 3.23.0-150600.3.14.1, 3.26.0-150700.5.12.1
openCryptoki-debuginfo - addressed in versions 3.17.0-5.19.2, 3.17.0-150400.4.11.1, 3.23.0-150500.3.12.1, 3.23.0-150600.3.14.1, 3.26.0-150700.5.12.1
openCryptoki - addressed in versions 3.17.0-5.19.2, 3.17.0-150400.4.11.1, 3.23.0-150500.3.12.1, 3.23.0-150600.3.14.1, 3.26.0-150700.5.12.1
openCryptoki-devel - addressed in versions 3.17.0-5.19.2, 3.17.0-150400.4.11.1, 3.23.0-150500.3.12.1, 3.23.0-150600.3.14.1, 3.26.0-150700.5.12.1
openCryptoki-64bit-debuginfo - addressed in versions 3.17.0-150400.4.11.1, 3.23.0-150500.3.12.1, 3.23.0-150600.3.14.1, 3.26.0-150700.5.12.1
openCryptoki-32bit - addressed in versions 3.17.0-150400.4.11.1, 3.23.0-150500.3.12.1, 3.23.0-150600.3.14.1
openCryptoki-32bit-debuginfo - addressed in versions 3.17.0-150400.4.11.1, 3.23.0-150500.3.12.1, 3.23.0-150600.3.14.1
opencryptoki-devel - update to 3.22.0-3
opencryptoki-icsftok - update to 3.22.0-3
opencryptoki-tpmtok - update to 3.22.0-3
opencryptoki-libs - update to 3.22.0-3
opencryptoki-swtok - update to 3.22.0-3
opencryptoki - update to 3.22.0-3
opencryptoki (Red Hat package) - addressed in versions 3.22.0-3.el8_10.2, 3.24.0-5.el9_6.1, 3.24.0-6.el10_0.1, 3.25.0-4.el9_7.2
openCryptoki-devel-debuginfo - addressed in versions 3.23.0-150500.3.12.1, 3.23.0-150600.3.14.1
opencryptoki-icsftok-debuginfo (Red Hat package) - update to 3.25.0-5.el10_1.2
opencryptoki-libs-debuginfo (Red Hat package) - update to 3.25.0-5.el10_1.2
opencryptoki-swtok-debuginfo (Red Hat package) - update to 3.25.0-5.el10_1.2
opencryptoki-debuginfo (Red Hat package) - update to 3.25.0-5.el10_1.2
opencryptoki-ep11tok-debuginfo (Red Hat package) - update to 3.25.0-5.el10_1.2
opencryptoki-icatok-debuginfo (Red Hat package) - update to 3.25.0-5.el10_1.2
opencryptoki-debugsource (Red Hat package) - update to 3.25.0-5.el10_1.2
opencryptoki-devel (Red Hat package) - update to 3.25.0-5.el10_1.2
opencryptoki-devel - update to 3.26.0-1
opencryptoki - update to 3.26.0-1
opencryptoki-debuginfo - update to 3.26.0-1
opencryptoki-debugsource - update to 3.26.0-1
opencryptoki-help - update to 3.26.0-1
opencryptoki - addressed in versions 3.26.0-3.fc42, 3.26.0-3.fc43, 3.26.0-3.fc44, 3.26.0-3.fc45

External References

Related Security Bulletins