PatchSiren cyber security CVE debrief

CVE-2026-55721 StoneFly CVE debrief

The StoneFly Storage Concentrator is vulnerable to SQL injection through cookie values processed by the login.pl and debug.pl scripts, allowing an unauthenticated remote attacker to manipulate database queries and extract sensitive information. This vulnerability has a CVSS score of 9.3 and is considered critical. Organizations using StoneFly Storage Concentrator should prioritize upgrading to version 8.0.4.29 or later to address the SQL injection vulnerability. Evidence limits suggest focusing on vendor-supported updates and validating affected scope. Defensive measures include monitoring for suspicious activity and implementing compensating controls where necessary. The source item from CISA CSAF provides details on the SQL injection vulnerability in StoneFly Storage Concentrator, including affected versions and recommended remediation. Review official advisories for specific guidance on affected deployments and implement defensive measures to prevent exploitation.

Vendor: StoneFly
Product: Storage Concentrator
CVSS: CRITICAL 9.3
CISA KEV: Not listed in stored evidence
Original CVE published: 2026-06-30
Original CVE updated: 2026-06-30
Advisory published: 2026-06-30
Advisory updated: 2026-06-30

Who should care

Organizations using StoneFly Storage Concentrator, particularly those in industrial control systems (ICS) environments, should be aware of this vulnerability and take steps to remediate it. This includes reviewing official advisories, verifying affected deployments, and implementing defensive measures to prevent exploitation.

Technical summary

The StoneFly Storage Concentrator is vulnerable to SQL injection through cookie values processed by the login.pl and debug.pl scripts. An unauthenticated remote attacker can manipulate database queries to extract sensitive information, including session tokens, password hashes, and stored secret keys. Organizations using StoneFly Storage Concentrator should prioritize upgrading to version 8.0.4.29 or later to address the SQL injection vulnerability. This vulnerability has a CVSS score of 9.3 and is considered critical.

Defensive priority

Organizations using StoneFly Storage Concentrator should prioritize upgrading to version 8.0.4.29 or later to address the SQL injection vulnerability.

Recommended defensive actions

Upgrade to Storage Concentrator version 8.0.4.29 or later
Implement additional security measures to detect and prevent SQL injection attacks
Monitor systems for suspicious activity
Review compensating controls for exposed systems while remediation is scheduled and verified
Check relevant monitoring, detection, and logs for exposed assets that need extra review
Track exceptions, retest remediated assets, and close the item only after evidence is documented
Confirm whether affected product deployments exist in managed environments and assign an owner for follow-up

Evidence notes

The source item from CISA CSAF provides details on the SQL injection vulnerability in StoneFly Storage Concentrator, including affected versions and recommended remediation. Organizations should verify their deployments and review official advisories for specific guidance. Defensive measures include monitoring for suspicious activity and implementing compensating controls where necessary. Evidence limits suggest focusing on vendor-supported updates and validating affected scope.

Official resources

AI-assisted PatchSiren debrief based on the supplied source corpus. The CVE record was published on 2026-06-30T06:00:00.000Z and has not been modified since then.