CVE-2026-13683 Synology CVE debrief

Who should care

Defenders responsible for Synology DSM installations, particularly those with administrator access to the EventScheduler API, should assess exposure and prioritize verification and remediation.

Why it matters

CVE-2026-13683 is a SQL injection vulnerability in Synology DSM's EventScheduler API that allows authenticated administrators to obtain non-sensitive information. Defenders should verify exposure, assess impact, and prioritize remediation for DSM installations.

• Obtain non-sensitive information through SQL injection
• Potential data exposure for administrators with EventScheduler API access

Technical summary

The EventScheduler API in Synology DSM is vulnerable to SQL injection. An authenticated administrator can exploit this vulnerability to obtain non-sensitive information. The vulnerability exists in DSM versions prior to 7.2.1-69057-12, 7.2.2-72806-9, 7.3.2-86009-4, and 7.4-90075. This vulnerability is caused by improper neutralization of special elements used in an SQL command. Attackers can inject malicious SQL queries to access unauthorized data. Defenders should prioritize verifying exposure and assessing the impact of this vulnerability on their systems, particularly those with administrator access to the EventScheduler API.

Defensive priority

Defenders should prioritize verifying exposure and assessing the impact of this vulnerability on their systems, particularly those with administrator access to the EventScheduler API.

Recommended defensive actions

• Verify DSM version and check for updates to 7.2.1-69057-12, 7.2.2-72806-9, 7.3.2-86009-4, or 7.4-90075
• Restrict administrator access to the EventScheduler API
• Monitor API usage for suspicious activity
• Implement additional logging and monitoring for EventScheduler API access
• Conduct regular security audits to identify and address potential vulnerabilities
• Develop and enforce a patch management process to ensure timely updates
• Review and update incident response plans to include procedures for responding to potential SQL injection attacks

Evidence notes

The CVE record and NVD entry provide details on the SQL injection vulnerability in Synology DSM. The Synology security advisory (Synology_SA_26_13) is referenced but not examined in detail. The vulnerability has been confirmed in DSM versions prior to 7.2.1-69057-12, 7.2.2-72806-9, 7.3.2-86009-4, and 7.4-90075. Defenders should verify the version of DSM in use and check for updates to ensure protection against this vulnerability.

Sources and references

Methodology and review provenance

AI-assisted synthesis based on stored public vulnerability evidence. System validation, approval state, and publication status do not by themselves establish human review of this revision. PatchSiren helps prioritize defensive review and does not prove exposure or remediation on any system.