CVE-2026-23759

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.

CVSS v3 7.2 HIGH

7.2^/10

CVSS v3 : HIGH

Vector :

Exploitability : 1.2 / Impact : 5.9

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required HIGH

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

Scope UNCHANGED

References

Link	Resource
https://www.perle.com/downloads/server_sds_sts_rackmount.shtml
https://www.perle.com/support_services/documentation_pdfs/iolan_scs-sds-sts_ug.pdf
https://www.vulncheck.com/advisories/perle-iolan-sts-scs-authenticated-command-injection-via-shell-ps

Configurations

No configuration.

History

18 Mar 2026, 14:52

Type	Values Removed	Values Added
Summary		(es) Modelos de servidor terminal Perle IOLAN STS/SCS con versiones de firmware anteriores a la 6.0 permiten la inyección de comandos del sistema operativo autenticada a través de la shell restringida a la que se accede por Telnet o SSH. El comando 'ps' de la shell no realiza una sanitización adecuada de los argumentos y pasa parámetros proporcionados por el usuario a una invocación de 'sh -c' que se ejecuta como root. Un atacante autenticado que puede iniciar sesión en el dispositivo puede inyectar metacaracteres de shell después del subcomando 'ps' para ejecutar comandos arbitrarios del sistema operativo con privilegios de root, lo que lleva a un compromiso total del sistema operativo subyacente.

17 Mar 2026, 16:16

Type	Values Removed	Values Added
New CVE

Information

Published : 2026-03-17 16:16

Updated : 2026-03-18 14:52

NVD link : CVE-2026-23759

Mitre link : CVE-2026-23759

CVE.ORG link : CVE-2026-23759

JSON object : View

Products Affected

No product.

CWE

CWE-78

Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')

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