PatchSiren cyber security CVE debrief
CVE-2026-2584 Ciser System SL CVE debrief
A critical SQL injection vulnerability in an authentication module allows unauthenticated remote attackers to compromise system configuration data through crafted login interface queries. The vulnerability carries a CVSS 4.0 score of 9.3 (Critical) with network attack vector, low complexity, and no privileges required. Confidentiality and integrity impacts are rated high, though availability remains unaffected and scope impact is limited. The CVE was published March 2, 2026 and last modified May 19, 2026. Vendor attribution remains unconfirmed with low confidence based on reference domain analysis pointing to Ciser System SL firmware, though this requires review. No known exploitation in the wild or ransomware campaign use has been documented, and the vulnerability is not listed in CISA KEV.
- Vendor
- Ciser System SL
- Product
- CSIP firmware
- CVSS
- CRITICAL 9.3
- CISA KEV
- Not listed in stored evidence
- Original CVE published
- 2026-03-02
- Original CVE updated
- 2026-05-19
- Advisory published
- 2026-03-02
- Advisory updated
- 2026-05-19
Who should care
Security teams operating web applications with authentication modules, database administrators managing configuration data, incident response teams monitoring for credential and configuration compromise, and organizations utilizing Ciser System SL firmware products.
Technical summary
The vulnerability exists in the authentication module's handling of login interface input, where specially crafted SQL queries can be injected without authentication. The CVSS 4.0 vector (AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:N/SC:L) indicates network-exploitable, low-complexity attacks requiring no privileges or user interaction, resulting in high confidentiality and integrity impact against the vulnerable system with limited scope effects on interconnected systems. The underlying weakness is CWE-89 (Improper Neutralization of Special Elements in SQL Command).
Defensive priority
Critical
Recommended defensive actions
- Review authentication module input validation and parameterized query implementation
- Monitor for anomalous login interface traffic patterns consistent with SQL injection attempts
- Apply vendor security updates when available for Ciser System SL firmware
- Implement Web Application Firewall rules targeting SQL injection payloads at login endpoints
- Conduct database activity monitoring for unauthorized configuration access attempts
Evidence notes
CVSS vector confirms network accessibility with no authentication required. CWE-89 (SQL Injection) is the primary weakness classification. The vulnerability status in NVD is marked as 'Deferred' as of the May 19, 2026 modification. Vendor identification derives from reference domain analysis rather than explicit CPE assignment, indicating attribution uncertainty.
Official resources
-
CVE-2026-2584 CVE record
CVE.org
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CVE-2026-2584 NVD detail
NVD
-
Source item URL
nvd_modified
- Source reference
The vulnerability was disclosed through official channels with a CVE record published by CVE.org and indexed in NVD. The source reference from INCIBE-CERT provides additional technical context regarding the affected firmware.