View CSAF Summary Successful exploitation of these vulnerabilities could allow attackers to gain broad unauthorized access, execute arbitrary commands with root privileges, steal sensitive data, and perform actions on behalf of legitimate users across interconnected systems. The following versions of StoneFly Storage Concentrator are affected:
Storage Concentrator <8.0.4.22 (CVE-2026-56415, CVE-2026-55721, CVE-2026-50040) Storage Concentrator Virtual Machine <8.0.4.22 (CVE-2026-56415, CVE-2026-55721, CVE-2026-50040) Storage Concentrator <8.0.4.26 (CVE-2026-50110) Storage Concentrator Virtual Machine <8.0.4.26 (CVE-2026-50110) Storage Concentrator <8.0.4.29 (CVE-2026-56413) Storage Concentrator Virtual Machine <8.0.4.29 (CVE-2026-56413)
CVSS Vendor Equipment Vulnerabilities
v3 10 StoneFly StoneFly Storage Concentrator Use of Hard-coded Credentials, Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection'), Improper Neutralization of Special Elements used in an SQL Command ('SQL Injection'), Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
Background
Critical Infrastructure Sectors: Defense Industrial Base, Energy, Financial Services, Healthcare and Public Health, Information Technology Countries/Areas Deployed: Worldwide Company Headquarters Location: United States
Vulnerabilities
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CVE-2026-50110
Storage Concentrator (SC & SCVM) contains hardcoded credentials for numerous internal services embedded within a configuration file. While the credentials are stored in an encoded format, the encoding can be reversed to plaintext. The exposed credentials span a broad range of internal services, including database accounts, licensing, replication services, and third-party integrations, meaning successful exploitation of this vulnerability could provide an attacker with unauthorized access to multiple interconnected systems. View CVE Details
Affected Products StoneFly Storage Concentrator
Vendor:StoneFly Product Version:StoneFly Storage Concentrator: <8.0.4.26, StoneFly Storage Concentrator Virtual Machine: <8.0.4.26 Product Status:known_affected
Remediations Vendor fixStoneFly recommends that users upgrade to Storage Concentrator version 8.0.4.29 or later to remediate these vulnerabilities. MitigationFor additional questions or support, users may contact StoneFly at https://stonefly.com/contact-us/.https://stonefly.com/contact-us/
Relevant CWE: CWE-798 Use of Hard-coded Credentials
Metrics
CVSS Version Base Score Base Severity Vector String
3.1 9.2 CRITICAL CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:L
4.0 9.3 CRITICAL CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:L/SC:H/SI:H/SA:L
CVE-2026-56413
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. View CVE Details
Affected Products StoneFly Storage Concentrator
Vendor:StoneFly Product Version:StoneFly Storage Concentrator: <8.0.4.29, StoneFly Storage Concentrator Virtual Machine: <8.0.4.29 Product Status:known_affected
Remediations Vendor fixStoneFly recommends that users upgrade to Storage Concentrator version 8.0.4.29 or later to remediate these vulnerabilities. MitigationFor additional questions or support, users may contact StoneFly at https://stonefly.com/contact-us/.https://stonefly.com/contact-us/
Relevant CWE: CWE-78 Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')
Metrics
CVSS Version Base Score Base Severity Vector String
3.1 10 CRITICAL CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H
4.0 10 CRITICAL 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
CVE-2026-56415
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. View CVE Details
Affected Products StoneFly Storage Concentrator
Vendor:StoneFly Product Version:StoneFly Storage Concentrator: <8.0.4.22, StoneFly Storage Concentrator Virtual Machine: <8.0.4.22 Product Status:known_affected
Remediations Vendor fixStoneFly recommends that users upgrade to Storage Concentrator version 8.0.4.29 or later to remediate these vulnerabilities. MitigationFor additional questions or support, users may contact StoneFly at https://stonefly.com/contact-us/.https://stonefly.com/contact-us/
Relevant CWE: CWE-78 Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')
Metrics
CVSS Version Base Score Base Severity Vector String
3.1 10 CRITICAL CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H
4.0 10 CRITICAL 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
CVE-2026-55721
Storage Concentrator (SC & SCVM) is vulnerable to SQL injection through cookie values processed by the login.pl and debug.pl scripts. The cookie value is incorporated directly into database queries without adequate sanitization, allowing an unauthenticated remote attacker to manipulate those queries and extract sensitive information from the underlying database, including session tokens, password hashes, and stored secret keys. View CVE Details
Affected Products StoneFly Storage Concentrator
Vendor:StoneFly Product Version:StoneFly Storage Concentrator: <8.0.4.22, StoneFly Storage Concentrator Virtual Machine: <8.0.4.22 Product Status:known_affected
Remediations Vendor fixStoneFly recommends that users upgrade to Storage Concentrator version 8.0.4.29 or later to remediate these vulnerabilities. MitigationFor additional questions or support, users may contact StoneFly at https://stonefly.com/contact-us/.https://stonefly.com/contact-us/
Relevant CWE: CWE-89 Improper Neutralization of Special Elements used in an SQL Command ('SQL Injection')
Metrics
CVSS Version Base Score Base Severity Vector String
3.1 9.3 CRITICAL CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:L/A:N
4.0 9.2 CRITICAL CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:L/VA:N/SC:H/SI:L/SA:N
CVE-2026-50040
Storage Concentrator (SC & SCVM) is vulnerable to reflected cross-site scripting (XSS) due to unsanitized content being echoed back in 404 error pages. An attacker can craft a malicious URL that, when visited by an authenticated user, causes arbitrary script content to execute within the victim's browser session in the context of the application. This could be leveraged to steal session cookies, redirect users, or perform unauthorized actions on behalf of the victim. View CVE Details
Affected Products StoneFly Storage Concentrator
Vendor:StoneFly Product Version:StoneFly Storage Concentrator: <8.0.4.22, StoneFly Storage Concentrator Virtual Machine: <8.0.4.22 Product Status:known_affected
Remediations Vendor fixStoneFly recommends that users upgrade to Storage Concentrator version 8.0.4.29 or later to remediate these vulnerabilities. MitigationFor additional questions or support, users may contact StoneFly at https://stonefly.com/contact-us/.https://stonefly.com/contact-us/
Relevant CWE: CWE-79 Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
Metrics
CVSS Version Base Score Base Severity Vector String
3.1 6.1 MEDIUM CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
4.0 5.1 MEDIUM CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:L/VI:L/VA:N/SC:L/SI:N/SA:N
Acknowledgments
David Yesland of Rhino Security Labs reported these vulnerabilities to CISA
Legal Notice and Terms of Use This product is provided subject to this Notification (https://www.cisa.gov/notification) and this Privacy & Use policy (https://www.cisa.gov/privacy-policy).
Recommended Practices CISA recommends users take defensive measures to minimize the risk of exploitation of these vulnerabilities. Minimize network exposure for all control system devices and/or systems, ensuring they are not accessible from the internet. Locate control system networks and remote devices behind firewalls and isolating them from business networks. When remote access is required, use more secure methods, such as Virtual Private Networks (VPNs), recognizing VPNs may have vulnerabilities and should be updated to the most current version available. Also recognize VPN is only as secure as the connected devices. CISA reminds organizations to perform proper impact analysis and risk assessment prior to deploying defensive measures. CISA also provides a section for control systems security recommended practices on the ICS webpage on cisa.gov/ics. Several CISA products detailing cyber defense best practices are available for reading and download, including Improving Industrial Control Systems Cybersecurity with Defense-in-Depth Strategies. CISA encourages organizations to implement recommended cybersecurity strategies for proactive defense of ICS assets. Additional mitigation guidance and recommended practices are publicly available on the ICS webpage at cisa.gov/ics in the technical information paper, ICS-TIP-12-146-01B--Targeted Cyber Intrusion Detection and Mitigation Strategies. Organizations observing suspected malicious activity should follow established internal procedures and report findings to CISA for tracking and correlation against other incidents. CISA also recommends users take the following measures to protect themselves from social engineering attacks: Do not click web links or open attachments in unsolicited email messages. Refer to Recognizing and Avoiding Email Scams for more information on avoiding email scams. Refer to Avoiding Social Engineering and Phishing Attacks for more information on social engineering attacks. No known public exploitation specifically targeting these vulnerabilities has been reported to CISA at this time.
Revision History
Initial Release Date: 2026-06-30
Date Revision Summary
2026-06-30 1 Initial Publication
Legal Notice and Terms of Use