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CVE-2026-56413: OS Command Injection in StoneFly Storage Concentrator

• Severity: critical (CVSS 10.0 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 4.2% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-06-30 · updated 2026-07-01
• Weakness: CWE-78

Description

Storage Concentrator (SC & SCVM) contains a command injection vulnerability in the ms_service.pl service, which listens on TCP port 9000 by default and accepts custom network packets to perform device actions. An unauthenticated remote attacker can send a specially crafted packet containing a malicious payload that is processed without adequate sanitization, resulting in arbitrary command execution with root-level privileges.

Affected products

• StoneFly Storage Concentrator: before 8.0.4.29 — fixed in 8.0.4.29
• StoneFly Storage Concentrator Virtual Machine: before 8.0.4.29 — fixed in 8.0.4.29

How to fix

Upgrade to a fixed version: StoneFly Storage Concentrator 8.0.4.29; StoneFly Storage Concentrator Virtual Machine 8.0.4.29. Check the vendor advisory for mitigations.

References

• https://github.com/cisagov/CSAF/blob/develop/csaf_files/OT/white/2026/icsa-26-181-06.json
• https://stonefly.com/contact-us/
• https://www.cisa.gov/news-events/ics-advisories/icsa-26-181-06

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