CVE-2026-40531 — MEDIUM (4.3)

Vulnerability Description

An integer overflow or wraparound vulnerability in File Operation 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 conduct limited denial-of-service attacks.

CVSS Score

4.3

MEDIUM

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

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

LOW

User Interaction

NONE

Scope

UNCHANGED

Confidentiality

NONE

Integrity

NONE

Availability

LOW

Related Weaknesses (CWE)

CWE-190

References

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

FAQ

What is CVE-2026-40531?

CVE-2026-40531 is a vulnerability with a CVSS score of 4.3 (MEDIUM). An integer overflow or wraparound vulnerability in File Operation 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 cond...

How severe is CVE-2026-40531?

CVE-2026-40531 has been rated MEDIUM with a CVSS base score of 4.3/10. Review the CVSS metrics above for detailed severity breakdown.

Is there a patch for CVE-2026-40531?

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