Security Resilience

CVE-2023-47564

Qnap Qsync Central 4.3.0.0 – 4.3.0.11

Published
02 February 2024
Modified
21 November 2024
Patch / advisory
CVSS Score v3.1 8.0
Click a component to see what it means
Raw vectorCVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:H
EPSS Score 0.010 63th percentile
Risk Priority 67 floored blend · peak EPSS

CVSS and EPSS are reproduced from their sources (NVD, FIRST EPSS). Risk Priority is our own derived reading, not an NVD score.

Summary

CVE-2023-47564 is a high-severity Incorrect Permission Assignment for Critical Resource (CWE-732) vulnerability in Qnap Qsync Central. Its CVSS base score is 8.0 (High).

Operationally, ranked in the top 37% of CVEs by exploit likelihood; it is not currently listed in the CISA KEV catalog.

The strongest mitigations our analysis identified map to AC-3 (Access Enforcement) and AC-6 (Least Privilege) — see the control section below for these in your framework.

Deeper analysis AI-assisted summary

Synthesised by an AI model from the NVD description and linked references — a reading aid, not an authoritative source.

CVE-2023-47564 is an incorrect permission assignment for critical resource vulnerability, tracked as CWE-732, that affects Qsync Central. The flaw permits improper access to sensitive resources over the network and carries a CVSS 3.1 base score of 8.0.

Authenticated users can exploit the issue remotely with low attack complexity to read or modify the affected resources, resulting in high impact to confidentiality, integrity, and availability.

QNAP has released fixes in Qsync Central 4.4.0.15 (dated 2024/01/04) and 4.3.0.11 (dated 2024/01/11), with details provided in security advisory QSA-24-03.

The associated EPSS score remains flat at 0.0795 with no material increase after disclosure.

OWASP Top 10 for Web (2025)

EU & UK References

Vulnerability Data

An incorrect permission assignment for critical resource vulnerability has been reported to affect Qsync Central. If exploited, the vulnerability could allow authenticated users to read or modify the resource via a network. We have already fixed the vulnerability in the…

more

following versions: Qsync Central 4.4.0.15 ( 2024/01/04 ) and later Qsync Central 4.3.0.11 ( 2024/01/11 ) and later

CWE(s)

Related Threats

CVEs Like This One

CVE-2025-30261Same product: Qnap Qsync Central
CVE-2025-54170Same product: Qnap Qsync Central
CVE-2025-57708Same product: Qnap Qsync Central
CVE-2025-44011Same product: Qnap Qsync Central
CVE-2025-44014Same product: Qnap Qsync Central
CVE-2025-33040Same product: Qnap Qsync Central
CVE-2025-29893Same product: Qnap Qsync Central
CVE-2025-29892Same product: Qnap Qsync Central
CVE-2025-30260Same product: Qnap Qsync Central
CVE-2025-30276Same product: Qnap Qsync Central

Affected Assets

qnap
qsync central
4.3.0.0 — 4.3.0.11 · 4.4.0.0 — 4.4.0.15

Mitigating Controls

Mitigating Controls (NIST 800-53 r5) AI

Enforces the access control policy that defines permissions on resources, thereby stopping incorrect assignments from remaining exploitable.

Directly requires assignment of only the minimum necessary permissions, preventing overly broad grants on critical resources.

Mitigating Controls (ISO/IEC 27001:2022 Annex A) AI

Derived directly from the weakness types (CWEs) cited in the NVD entry via our AI-authored CWE→ISO cross-walk (authority under review) — links open the control.

blocks

A.5.1 only requires the existence of an overarching policy and topic-specific policies (including on access control); it does not itself enforce, implement, or act on permissions and therefore cannot stop CWE-732 from being exploitable.

blocks

A.5.12 only defines and communicates a classification scheme (with owners accountable for applying it); it does not itself enforce, restrict or decide any permissions, so the CWE-732 permission flaw can still be present and exploitable.

blocks

A.5.15 directly requires determining access needs, defining and communicating an access control policy, implementing rules that map rights/restrictions to entities (including consistency with classification), and considering need-to-know, privileged restrictions, segregation, formal authorization, and dynamic factors — which squarely stops most incorrect permission assignments from being exploitable; the bounded remainder is misconfigurations that violate the policy itself.

blocks

A.5.18 directly governs the provisioning, review, adjustment and revocation of logical access rights (including for critical resources) according to business needs, policy, SoD and risk, which stops most unintended actors from reading/modifying via incorrect permissions; the bounded remainder is incorrect permission assignments that are not access-right decisions at all (e.g. filesystem umask, ACL syntax errors).

blocks

Documented responsibility for protecting assets encourages correct permission settings rather than leaving them at insecure defaults.

finds

Monitoring supplier policy changes and conducting audits can reveal incorrect permission assignments on resources managed by the supplier, prompting corrective action before they are exploited.

Hardening callouts derived

DISA STIG baselines are authored against specific weaknesses. Where this CVE cites a broad weakness class, the mapping is not asserted at that abstraction (owner ruling, 2026-09-25: grade only at Base and below), so no rule is shown here rather than a rule shown against the wrong grain.

  • No fine-grained STIG row for CWE-732, a class-level weakness. Rules are authored against its narrower children: CWE-276, CWE-277, CWE-281.

References