CVE-2025-54152
Official description Straight from the sourceThe vendor's or NVD's own wording, published unedited. Authoritative, but often terse — it says what broke, rarely what to do.
NVD · uneditedA use of out-of-range pointer offset vulnerability has been reported to affect Qsync Central. If a remote attacker gains a user account, they can then exploit the vulnerability to read sensitive portions of memory. We have already fixed the vulnerability in the following version: Qsync Central 5.0.0.4 ( 2026/01/20 ) and later
Technical summary Written by usOur analysis, written from the advisory, the CVSS vector and the affected-version data. It adds context the advisory leaves out, and never invents facts that are not in the source.
dbcve analysis · high confidenceThis is an out-of-range pointer offset (out-of-bounds read) vulnerability in Qsync Central. A remote attacker who has obtained valid user credentials can exploit the vulnerability to read sensitive portions of memory beyond the intended buffer boundaries.
Verify against the referenced sources before acting — the references below are authoritative for this CVE, this summary is not.
Affected products & versions What the vendor confirmedThe version ranges the vendor confirmed as vulnerable. If your version sits inside a range here, treat yourself as exposed until you have upgraded.
NVD · CPE data>= 5.0.0.0, < 5.0.0.4CVSS breakdown How the score is builtThe industry scoring standard. It rates how the flaw is reached, what it takes to exploit, and what an attacker gains — the score is derived from those, not the other way round.
From the vector- Attack vector
- Network
- Complexity
- Low
- Privileges
- Low
- User interaction
- None
- Scope
- Unchanged
- Confidentiality
- High
- Integrity
- None
- Availability
- None
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
Am I affected? How to checkSteps we derive from the advisory and the affected-version data, so you can decide whether this CVE reaches your setup. They are a guide, not a scan — your own configuration is the authority.
dbcve checksWork through these to decide whether this CVE applies to you.
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Verify Qsync Central is installedCheck if Qsync Central is running on the QNAP NAS device. This can typically be done via the QNAP Admin Console (Port 8080/443) under 'Applications' or by checking running processes via SSH if you have CLI access.Affected if Qsync Central is installed and running on the device
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Determine installed Qsync Central versionLocate the version information for Qsync Central. This is usually displayed in the QNAP Admin Console under 'Qsync Central' in the Applications section, or can be retrieved via CLI command 'qpkg --info QsyncCentral' if available.Affected if The displayed version is 5.0.0.0, 5.0.0.1, 5.0.0.2, or 5.0.0.3
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Confirm vulnerable version rangeCompare the identified version against the affected range: versions 5.0.0.0 through 5.0.0.3 are vulnerable. Versions below 5.0.0.0 or at/above 5.0.0.4 are not affected.Affected if Installed version is >= 5.0.0.0 and < 5.0.0.4
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Check network exposure of Qsync CentralVerify if the Qsync Central web interface is exposed to untrusted networks. This service typically listens on the NAS management ports. Review firewall rules and access control lists.Affected if Qsync Central is accessible from networks outside the trusted internal environment, increasing exposure to remote attackers
The environment is affected if Qsync Central is installed with version 5.0.0.0 through 5.0.0.3 and is network accessible to potential attackers who could obtain valid credentials.
Generated from the published advisory. Verify against your own configuration.
Remediation Closing itWhat it takes to close this. Where a vendor fix exists we point at it; where none exists we say so plainly, and can build one. Effort estimates are scoped from the advisory, not from your codebase.
dbcve · scoped5.0.0.4
Primary mitigation is upgrading to Qsync Central 5.0.0.4 or later. Additionally, enforce strong credential policies and limit account exposure to reduce the likelihood of an attacker gaining the initial user account needed to exploit this flaw.
Qsync Central 5.0.0.4
- Back up current Qsync Central configuration and data before starting the upgrade process
- Access QNAP's official download center or the Qsync Central admin interface
- Download Qsync Central version 5.0.0.4 or later from official QNAP sources
- Apply the update through the Qsync Central administrative interface or QNAP NAS firmware update mechanism
- After installation, verify that the running version is 5.0.0.4 or later
- Confirm that the Qsync Central service is functioning normally
Generated from the published advisory — verify against the referenced sources before acting.
- Consultation2.0 h
- Implementation2.0 h
- Testing3.0 h
- Review / QA1.0 h
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Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2025-54152 — or any other known-vulnerable package — straight from your lock files. Free and open source; it runs locally and uploads nothing.
References Go to the primary sourcePrimary sources — vendor advisories, patches and trackers. Where our summary and a reference disagree, the reference wins.
Primary sourcesPractitioner notes
ContributedPeer-ranked notes from engineers who’ve handled CVE-2025-54152 in production — separate from our analysis above.
The advisory tells you what broke. It rarely tells you what actually worked. If you’ve dealt with this one, that detail is what the next engineer is searching for.
- The version that genuinely resolved it — not the one the vendor claimed
- A config change or rule that shut the vector down
- A gotcha in the upgrade path that cost you an afternoon
No notes yet
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- Verified mitigations, workarounds, and config changes
- Version or environment caveats, and links to real fixes
- No weaponised exploit code, or anything meant to cause harm
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