SB2026041480 - Authenticated code injection in Synology Mail Station for DSM
Published: April 14, 2026
Security Bulletin ID
SB2026041480
CSH Severity
Low
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Remote access
Highest impact
Data manipulation
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 vulnerability.
1) Code Injection (CVE-ID: CVE-2026-5129)
CWE-ID: CWE-94 - Improper Control of Generation of Code ('Code Injection')
CVSSv4: 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
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.
Remediation
Install update from vendor's website.