Cyber Resilience

CVE-2025-33032

Path Traversal in Qnap Qts 5.2.0.2737 … 5.2.4.3092

Published
29 August 2025
Modified
17 June 2026
Patch / advisory
CVSS Score v4 5.1
Click a component to see what it means
Raw vectorCVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
EPSS Score 0.0047 38th percentile
Risk Priority 35 floored blend · peak EPSS

Summary

CVE-2025-33032 is a medium-severity Path Traversal (CWE-22) vulnerability in Qnap Qts. Its CVSS base score is 5.1 (Medium).

Operationally, ranked at the 38th percentile by exploit likelihood (below the median); it is not currently listed in the CISA KEV catalog.

The strongest mitigations our analysis identified map to SI-10 (Information Input Validation) and SI-2 (Flaw Remediation) — see the control section below for these in your framework.

OWASP Top 10 for Web (2025)

EU & UK References

Vulnerability Data

A path traversal vulnerability has been reported to affect several QNAP operating system versions. If a remote attacker gains an administrator account, they can then exploit the vulnerability to read the contents of unexpected files or system data. We have…

more

already fixed the vulnerability in the following version: QTS 5.2.5.3145 build 20250526 and later QuTS hero h5.2.5.3138 build 20250519 and later

CWE(s)

Related Threats

CVEs Like This One

CVE-2025-30270Same product: Qnap Qts
CVE-2025-30271Same product: Qnap Qts
CVE-2025-47211Same product: Qnap Qts
CVE-2026-24717Same product: Qnap Qts
CVE-2024-37046Same product: Qnap Qts
CVE-2024-21904Same product: Qnap Qts
CVE-2025-59381Same product: Qnap Qts
CVE-2023-51366Same product: Qnap Qts
CVE-2025-59380Same product: Qnap Qts
CVE-2024-37043Same product: Qnap Qts

Affected Assets

qnap
qts
5.2.0.2737, 5.2.0.2744, 5.2.0.2782, 5.2.0.2802, 5.2.0.2823
qnap
quts hero
h5.2.0.2737, h5.2.0.2782, h5.2.0.2789, h5.2.0.2802, h5.2.0.2823

Mitigating Controls

Control response

Prevent
Stop it (NIST 800-53)
  • SI-10 Information Input Validation
  • AC-3 Access Enforcement
  • SI-2 Flaw Remediation
Detect
Catch it (NIST detect / respond)

Harden
Shrink the surface (DISA STIG)

Validate
Prove the fix (OWASP ASVS)
  • V5.3.2

Mitigating Controls (NIST 800-53 r5) AI

prevent

Directly blocks CWE-22 path traversal by validating and sanitizing file/path inputs before they reach the file-system read operation.

prevent

Enforces explicit access-control decisions on every file read, limiting the impact even when an authenticated administrator account is abused.

prevent

Requires prompt application of the vendor-supplied patches (QTS 5.2.5.3145 / QuTS hero h5.2.5.3138) that eliminate the path-traversal flaw.

Mitigating Controls (NIST CSF 2.0) AI

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

PR.PS-02 partial match
prevents

Patching/maintenance can remediate known path-traversal flaws in deployed software (partial prevention of exploitability) but does nothing to stop the coding defect from being introduced in the first place.

PR.AA-05 none match
prevents

PR.AA-05 defines and reviews access policies but does not address code-level pathname neutralization, so neither direction prevents CWE-22.

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.

detects

Security testing in development catches path traversal via static/dynamic analysis.

prevents

Secure SDLC mandates input validation and path sanitization that directly prevent path traversal.

prevents

Application security requirements include rules for safe file handling and canonicalization.

prevents

Secure architecture principles require least-privilege file access and directory isolation.

prevents

Secure coding standards explicitly forbid unsafe path construction and mandate safe APIs.

mitigates

Information access restriction limits which files an application may read or write.

References