CVE-2024-21904Network attack vector

Sensitive file disclosure via path traversal

Published Sep 6, 2024 · Updated Sep 6, 2024

Path traversal in QNAP QTS 5.1.x and QuTS hero h5.1.x allows attackers to read unexpected files over a network. QNAP has not identified the request handler or explained how a network-supplied pathname escapes the directory intended to contain it. The precise access gate is not publicly documented; successful traversal exposes files outside the intended directory boundary.

CVSS severity5.9
Medium
EPSS probability0.37%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
Coverage for this vulnerability

See if you're affected

Explore vulnerability checks for your environment with Hinoki.

Book a demo

Summary

What happened

Path traversal in QNAP QTS 5.1.x and QuTS hero h5.1.x allows attackers to read unexpected files over a network. QNAP has not identified the request handler or explained how a network-supplied pathname escapes the directory intended to contain it. The precise access gate is not publicly documented; successful traversal exposes files outside the intended directory boundary.

The record

CVE
CVE-2024-21904
Published
Sep 6, 2024
Updated
Sep 6, 2024
Vendor
Linn Products Limited
Product
QuTS hero
Classifications
CWE-22, CAPEC-126, T1005
Attack vector
network
Privileges
Unavailable

Timeline

How it unfolded

  1. Sep 6, 2024CVE publishedPublication date reported by the CVE source.
  2. Sep 6, 2024Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

Compare your product and version with the public record. A matching version still requires validation against your environment.

Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=h5.1.x <h5.1.7.2770 build 20240520

What conditions does exploitation require?

Attack vectornetwork
Required privilegesUnavailable in this record.

What is affected?

Linn Products Limited · QuTS heroversion=h5.1.x <h5.1.7.2770 build 20240520
Linn Products Limited · QTSversion=5.1.x <5.1.7.2770 build 20240520

Published CVSS scores

6.5NIST NVDCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
5.9QNAP Systems, Inc.CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:N/I:L/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
PrivilegesUnavailable
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-22Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')
CAPEC-126Path Traversal
T1005Data from Local System

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

See the directory against your own environment.

Your stack

Check the software in your environment

Book a demo to see how Hinoki identifies affected software and validates exploitability in your environment.

Book a demo