Code Injection in Mail Station for DSM - CVE-2026-5129
Published: April 14, 2026
Vulnerability identifier: #VU125953
CSH Severity: Low
CVSS v4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:U/U:Clear
CVE-ID: CVE-2026-5129
CWE-ID: CWE-94
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vendor: Synology Inc.
Affected software:
Mail Station for DSM
Mail Station for DSM
Detailed vulnerability description
The vulnerability allows a remote user to read or write limited files.
The vulnerability exists due to improper control of generation of code in Mail Station when handling requests. A remote user can send a specially crafted request to read or write limited files.
How to mitigate CVE-2026-5129
Install security update from vendor's website.