CVE-2026-23759

HIGH

7.2

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.

CVE Details

CVSS v3.1 Score7.2

SeverityHIGH

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

Attack VectorNETWORK

ComplexityLOW

Privileges RequiredHIGH

User InteractionNONE

Published3/17/2026

Last Modified3/18/2026

Sourcenvd

Honeypot Sightings0

Weaknesses (CWE)

CWE-78

References

https://www.perle.com/downloads/server_sds_sts_rackmount.shtml(disclosure@vulncheck.com)

https://www.perle.com/support_services/documentation_pdfs/iolan_scs-sds-sts_ug.pdf(disclosure@vulncheck.com)

https://www.vulncheck.com/advisories/perle-iolan-sts-scs-authenticated-command-injection-via-shell-ps(disclosure@vulncheck.com)

IOC Correlations

No correlations recorded

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