Improper Encoding or Escaping of Output in DiskStation Manager (DSM) - CVE-2026-13684
Published: September 20, 2026
Vulnerability identifier: #VU151479
CSH Severity: High
CVSS v4: 9.3 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N]
CVE-ID: CVE-2026-13684
CWE-ID: CWE-116
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote attacker to read or write arbitrary files or cause a denial of service.
The vulnerability exists due to improper encoding or escaping of output in SCGI when processing output. A remote attacker can exploit the vulnerability to read or write arbitrary files or cause a denial of service.
Affected software
DiskStation Manager (DSM)
How to mitigate CVE-2026-13684
Install security update from vendor's website.
DiskStation Manager (DSM) - addressed in versions 7.2.1-69057-12, 7.2.2-72806-9, 7.3.2-86009-4, 7.4-90075