CVE-2026-40530 — HIGH (8.0)

Vulnerability Description

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.

CVSS Score

8.0

HIGH

CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:H

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

LOW

User Interaction

REQUIRED

Scope

UNCHANGED

Confidentiality

HIGH

Integrity

HIGH

Availability

HIGH

Related Weaknesses (CWE)

CWE-93

References

https://www.synology.com/en-global/security/advisory/Synology_SA_26_06

FAQ

What is CVE-2026-40530?

CVE-2026-40530 is a vulnerability with a CVSS score of 8.0 (HIGH). 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 aut...

How severe is CVE-2026-40530?

CVE-2026-40530 has been rated HIGH with a CVSS base score of 8.0/10. Review the CVSS metrics above for detailed severity breakdown.

Is there a patch for CVE-2026-40530?

Check the references section above for vendor advisories and patch information. Review vendor security bulletins for remediation guidance.