High 7.2Published Mar 17, 2026

CVE-2026-23759Perle IOLAN STS/SCS Authenticated Command Injection via 'shell ps'

Updated under an hour ago (Oct 27, 2026, 4:50 PM ET)

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It affects Perle Systems IOLAN STS and 1 other product. Add what you run to find out whether that includes you.

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Every CVE for Perle Systems IOLAN STS

Exploited in the last 30 days

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: 7.2 HIGH (v3.1, CNA)CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
Weakness (CWE): CWE-78
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): Not loaded for this CVE
Assigned by: VulnCheck
NVD analysis: Deferred
Record last updated: May 13, 2026
First seen by InfoSec Signals: Oct 9, 2026

Affected products

Affected products

Perle Systems IOLAN STS perle_systems:iolan_sts (from the name)	before 6.0	CNA record
Perle Systems IOLAN SCS perle_systems:iolan_scs (from the name)	before 6.0	CNA record

References

References

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

The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.