CVE-2026-13684

Summary

This vulnerability allows remote attackers to read or write arbitrary files and conduct denial-of-service attacks by improperly encoding or escaping SCGI output in Synology DiskStation Manager versions before 7.2.1-69057-12, 7.2.2-72806-9, 7.3.2-86009-4, and 7.4-90075, posing a significant risk to system integrity and availability.

Exploitability

Exploitation is relatively straightforward given the preconditions of an attacker being able to manipulate SCGI output. Patching to 7.2.1-69057-12 or later is required to mitigate this risk.

Blast radius

If exploited, this vulnerability could lead to unauthorized file access, data corruption, and denial-of-service conditions, impacting the entire Synology DiskStation Manager environment.

Detection

No reliable host or network indicator is derivable from the published description.

Prioritized remediation

Upgrade to Synology DiskStation Manager 7.2.1-69057-12 or later.

Analysis generated locally by qwen2.5:7b-instruct (no data left the box). AI-assisted — verify against primary sources before acting.