High [CVE-2026-4036 +10] improper neutralization of CRLF sequences ('CRLF injection') vulnerability in User API in Synology DiskStation Manager (DSM) before 7.2.1-69057-10, 7.2.2-72806-7 and 7.3.2-86009-2 allows remote authenticated users to read or write arbitrary files and conduct denial-of-service attacks after the system is rebooted
This high-severity Synology advisory covers CVE-2026-4036 and CVE-2026-40530 and 9 more CVEs affecting DSM 7.3, DSM 7.2.2, DSM 7.2.1.
Aggregated and source-linked by VulniPulse. Data sources, validation and limitations. This bulletin covers 11 CVEs; its score, affected versions and guidance may apply to different issues within that bulletin.
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Summary
An improper neutralization of CRLF sequences ('CRLF injection') vulnerability in User API in Synology DiskStation Manager (DSM) before 7.2.1-69057-10, 7.2.2-72806-7 and 7.3.2-86009-2 allows remote authenticated users to read or write arbitrary files and conduct denial-of-service attacks after the system is rebooted.
Affected products named by the advisory: DSM 7.3; DSM 7.2.2; DSM 7.2.1.
- before 7.2.1-69057-10
Official advisory · high-confidence parse· fetched 26 days ago·verify at source
- 7.2.1-69057-10
Official advisory · high-confidence parse· fetched 26 days ago·verify at source
Mitigation checklist
- Upgrade the affected Synology product to a fixed release: 7.3.2-86009-2, 7.2.2-72806-7, 7.2.1-69057-10.
Official advisory · high-confidence parse· fetched 26 days ago·verify at source
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