CVE-2024-50404Network attack vector

Authenticated filesystem traversal via link following

Published Dec 6, 2024 · Updated Dec 6, 2024

Link following in QNAP Qsync Central 4.4.x allows remote authenticated users to traverse the file system to unintended locations. The application follows a user-controlled link during file access without preventing resolution to an unintended resource, but QNAP has not disclosed the affected component. Exploitation requires a Qsync user account and active user interaction; QNAP scores only application availability as affected.

CVSS severity6.8
Medium
EPSS probability1.43%
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

Link following in QNAP Qsync Central 4.4.x allows remote authenticated users to traverse the file system to unintended locations. The application follows a user-controlled link during file access without preventing resolution to an unintended resource, but QNAP has not disclosed the affected component. Exploitation requires a Qsync user account and active user interaction; QNAP scores only application availability as affected.

The record

CVE
CVE-2024-50404
Published
Dec 6, 2024
Updated
Dec 6, 2024
Vendor
Linn Products Limited
Product
Qsync Central
Classifications
CWE-59
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Dec 6, 2024CVE publishedPublication date reported by the CVE source.
  2. Dec 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=4.4.x.x <4.4.0.16_20240819 ( 2024/08/19 )

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Linn Products Limited · Qsync Centralversion=4.4.x.x <4.4.0.16_20240819 ( 2024/08/19 )

Published CVSS scores

6.8QNAP Systems Inc.CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:A/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N

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
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-59Improper Link Resolution Before File Access ('Link Following')

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