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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
LOW 1.3
CISA KEV
Not listed in stored evidence
Original CVE published
2026-06-10
Original CVE updated
2026-06-17
Advisory published
2026-06-10
Advisory updated
2026-06-17

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.

Sources and references

Verified primary and authoritative sources

  • CVE-2026-24720 CVE Program record

    Publisher, destination, and source semantics verified

    URL: https://www.cve.org/CVERecord?id=CVE-2026-24720

    CVE Program - Official CVE Program record with source-provided CVE metadata.

  • CVE-2026-24720 NVD vulnerability detail

    Publisher, destination, and source semantics verified

    URL: https://nvd.nist.gov/vuln/detail/CVE-2026-24720

    NIST National Vulnerability Database - Official NIST NVD detail page and source-specific vulnerability assessment.

Supplemental references

Methodology and review provenance

AI-assisted synthesis based on stored public vulnerability evidence. System validation, approval state, and publication status do not by themselves establish human review of this revision. PatchSiren helps prioritize defensive review and does not prove exposure or remediation on any system.