Vulnerability record/PUBLISHED/Published Nov 12, 2026 03:33:57 UTC

CVE-2026-18633

An access of uninitialized pointer vulnerability in the nfsd in Synology DiskStation Manager (DSM) before 7.3.2-86009-5 and 7.4.1-90080-1 allows remote attackers to conduct denial-of-service attacks.

Base score7.5/ 10

SeverityHighCVSS 3.1

Exploitability / impact

CVSS metric breakdown

Vector-derived attributes

Base severityHigh

Attack vectorNetworkAV

Attack complexityLowAC

Privileges requiredNonePR

User interactionNoneUI

ScopeUnchangedS

Confidentiality impactNoneC

Integrity impactNoneI

Availability impactHighA

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

CVSS communicates standardized severity and impact characteristics. It does not establish whether a system is exploitable in your specific environment.

Record context

CVE Numbering Authoritysynology

Last updatedNov 12, 2026 03:33:57 UTC

PublishedNov 12, 2026 03:33:57 UTC

ReservedAug 3, 2026 09:52:06 UTC

Credits

Pumpkin (@u1f383) from DEVCORE Research Team