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PatchSiren cyber security CVE debrief

CVE-2026-24720 QNAP Systems Inc. CVE debrief

CVE-2026-24720 is a vulnerability in QNAP File Station 6, which allows an attacker with a user account to cause a denial of service by preventing other systems, applications, or processes from accessing the same type of resource. The vulnerability has a CVSS score of 5.3 and is classified as MEDIUM severity. QNAP has fixed the vulnerability in File Station 5 version 5.5.6.5243 and later.

Vendor
QNAP Systems Inc.
Product
File Station 5
CVSS
MEDIUM 5.3
CISA KEV
Not listed in stored evidence
Original CVE published
2026-06-10
Original CVE updated
2026-06-12
Advisory published
2026-06-10
Advisory updated
2026-06-12

Who should care

Administrators and users of QNAP File Station 6, especially those with user accounts that could be compromised.

Technical summary

The vulnerability is caused by an allocation of resources without limits or throttling. An attacker with a user account can exploit this vulnerability to prevent other systems, applications, or processes from accessing the same type of resource.

Defensive priority

MEDIUM

Recommended defensive actions

  • Update to File Station 5 version 5.5.6.5243 or later.
  • Restrict access to File Station 6 to trusted users and accounts.
  • Monitor File Station 6 for suspicious activity.

Evidence notes

The vulnerability was reported to affect File Station 6 and has been fixed in File Station 5 version 5.5.6.5243 and later.

Official resources

CVE-2026-24720 was published on 2026-06-10T04:17:17.127Z and modified on 2026-06-12T13:49:15.650Z.