CVE-2026-23759
HIGH EPSS 71.2%
Published Mar 17, 20263mo ago · Modified Jun 17, 20262w ago
8.6 CVSS 4.0
Published Mar 17, 2026 3mo ago
Last Modified Jun 17, 2026 2w ago
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.
CVSS Details
Base Score
Exploitability
Impact
Vector string
CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X Attack Vector Network
Attack Complexity Low
Privileges Required High
User Interaction None
Scope X
Threat Intelligence
EPSS Exploit Probability
71.2% percentile
Exploit & Patch Status
No Known Exploit
No Patch Available
Weaknesses 1
CWE-78 OS Command Injection Injection
References 3
- perle.com https://www.perle.com/downloads/server_sds_sts_rackmount.shtml
- perle.com https://www.perle.com/support_services/documentation_pdfs/iolan_scs-sds-sts_ug.pdf
- vulncheck.com https://www.vulncheck.com/advisories/perle-iolan-sts-scs-authenticated-command-injection-via-shell-ps
Remediation
No remediation data recorded yet
Check vendor advisories and the NVD entry for patch availability.