Description

Perle IOLAN STS/SCS terminal server models with firmware versions prior to 6.0 allow authenticated OS command injection via the restricted shell accessed over Telnet or SSH. The shell 'ps' command does not perform proper argument sanitization and passes user-supplied parameters into an 'sh -c' invocation running as root. An authenticated attacker who can log in to the device can inject shell metacharacters after the 'ps' subcommand to execute arbitrary OS commands with root privileges, leading to full compromise of the underlying operating system.

INFO

Published Date :

2026-03-17T15:20:10.743Z

Last Modified :

2026-03-17T16:09:08.925Z

Source :

VulnCheck
AFFECTED PRODUCTS

The following products are affected by CVE-2026-23759 vulnerability.

Vendors Products
Perle Systems
  • Iolan Scs
  • Iolan Sts
REFERENCES

Here, you will find a curated list of external links that provide in-depth information to CVE-2026-23759.

URL Resource
https://www.perle.com/downloads/server_sds_sts_rackmount.shtml cve-icon cve-icon
https://www.perle.com/support_services/documentation_pdfs/iolan_scs-sds-sts_ug.pdf cve-icon cve-icon
https://www.vulncheck.com/advisories/perle-iolan-sts-scs-authenticated-command-injection-via-shell-ps cve-icon cve-icon
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CVSS Vulnerability Scoring System

Detailed values of each vector for above chart.
Attack Vector
Attack Complexity
Attack Requirements
Privileges Required
User Interaction
VS Confidentiality
VS Integrity
VS Availability
SS Confidentiality
SS Integrity
SS Availability
Detailed values of each vector for above chart.
Attack Vector
Attack Complexity
Privileges Required
User Interaction
Scope
Confidentiality Impact
Integrity Impact
Availability Impact