CVE-2026-40530: Improper Neutralization of CRLF Sequences ('CRLF Injection') in Synology DiskStation Manager (DSM)
CVE-2026-40530 is a CRLF injection vulnerability in Synology DiskStation Manager (DSM) affecting versions before 7.2.1-69057-10, 7.2.2-72806-7, and 7.3.2-86009-2. It allows remote authenticated users to read or write arbitrary files and perform denial-of-service attacks after reboot. The vulnerability requires user authentication and involves improper neutralization of CRLF sequences in the User API.
AI Analysis
Technical Summary
This vulnerability in Synology DSM's User API involves improper neutralization of CRLF sequences, enabling remote authenticated users to inject CRLF characters. Exploitation can lead to arbitrary file read/write operations and denial-of-service conditions triggered after system reboot. The affected versions are prior to 7.2.1-69057-10, 7.2.2-72806-7, and 7.3.2-86009-2. The CVSS v3.1 score is 8.0, indicating high severity with network attack vector, low attack complexity, requiring privileges and user interaction, and impacts confidentiality, integrity, and availability.
Potential Impact
Successful exploitation allows remote authenticated users to read or write arbitrary files on the system and cause denial-of-service conditions after reboot. This can compromise system confidentiality, integrity, and availability.
Mitigation Recommendations
A fix is available in Synology DiskStation Manager versions 7.2.1-69057-10, 7.2.2-72806-7, and 7.3.2-86009-2. Users should upgrade to these or later versions to remediate this vulnerability.
CVE-2026-40530: Improper Neutralization of CRLF Sequences ('CRLF Injection') in Synology DiskStation Manager (DSM)
Description
CVE-2026-40530 is a CRLF injection vulnerability in Synology DiskStation Manager (DSM) affecting versions before 7.2.1-69057-10, 7.2.2-72806-7, and 7.3.2-86009-2. It allows remote authenticated users to read or write arbitrary files and perform denial-of-service attacks after reboot. The vulnerability requires user authentication and involves improper neutralization of CRLF sequences in the User API.
CVSS v3.1
Score 8.0high
Affected software
Synology
DiskStation Manager (DSM)
pkg:rpm/synology/diskstation-managerRun on your own infrastructure? Check whether these packages are installed with threat-finder — our free open-source scanner.
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This vulnerability in Synology DSM's User API involves improper neutralization of CRLF sequences, enabling remote authenticated users to inject CRLF characters. Exploitation can lead to arbitrary file read/write operations and denial-of-service conditions triggered after system reboot. The affected versions are prior to 7.2.1-69057-10, 7.2.2-72806-7, and 7.3.2-86009-2. The CVSS v3.1 score is 8.0, indicating high severity with network attack vector, low attack complexity, requiring privileges and user interaction, and impacts confidentiality, integrity, and availability.
Potential Impact
Successful exploitation allows remote authenticated users to read or write arbitrary files on the system and cause denial-of-service conditions after reboot. This can compromise system confidentiality, integrity, and availability.
Mitigation Recommendations
A fix is available in Synology DiskStation Manager versions 7.2.1-69057-10, 7.2.2-72806-7, and 7.3.2-86009-2. Users should upgrade to these or later versions to remediate this vulnerability.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- synology
- Date Reserved
- 2026-04-14T01:01:14.606Z
- Cvss Version
- 3.1
- State
- PUBLISHED
Threat ID: 6aad1a3655bf5e2cf5ea35bc
Added to database: 09/18/2026, 11:02:14 UTC
Last enriched: 09/18/2026, 11:16:29 UTC
Last updated: 09/18/2026, 11:21:30 UTC
Views: 7
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