CVE-2020-2498
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 · uneditedIf exploited, this cross-site scripting vulnerability could allow remote attackers to inject malicious code in certificate configuration. QANP have already fixed these vulnerabilities in the following versions of QTS and QuTS hero. QuTS hero h4.5.1.1472 build 20201031 and later QTS 4.5.1.1456 build 20201015 and later QTS 4.4.3.1354 build 20200702 and later QTS 4.3.6.1333 build 20200608 and later QTS 4.3.4.1368 build 20200703 and later QTS 4.3.3.1315 build 20200611 and later QTS 4.2.6 build 20200611 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 · moderate confidenceThis is a cross-site scripting (XSS) vulnerability in QNAP QTS and QuTS hero systems affecting the certificate configuration functionality. Remote attackers can inject malicious script code that gets stored and executed when users interact with the certificate configuration interface.
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< h4.5.1.1472< 4.5.1.1456< 4.4.3.1354< 4.3.6.1333< 4.3.4.1368< 4.3.3.1315< 4.2.6CVSS 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
- None
- User interaction
- Required
- Scope
- Changed
- Confidentiality
- Low
- Integrity
- Low
- Availability
- None
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/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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Identify QTS or QuTS hero firmware versionLog into the QNAP admin web interface and go to Control Panel > System > Firmware, or via SSH run the command 'cat /etc/config/uLinux.conf | grep version' to retrieve the firmware version string.Affected if The installed version falls below any of these thresholds: QTS < 4.2.6, < 4.3.3.1315, < 4.3.4.1368, < 4.3.6.1333, < 4.4.3.1354, or < 4.5.1.1456; QuTS hero < h4.5.1.1472.
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Confirm product type is QTS or QuTS heroCheck the system information page in the web UI or run 'cat /proc/model' via SSH to identify whether the device runs QTS or QuTS hero.Affected if The device runs QuTS hero with version below h4.5.1.1472, or any QTS version below 4.5.1.1456 (with additional thresholds for older branches as listed.
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Verify certificate configuration interface is accessibleNavigate to Control Panel > Security > Certificate & Private Key in the QNAP web interface, or check via the API endpoint '/cgi-bin/certmanager/' to confirm the certificate management module is present and enabled.Affected if The certificate configuration functionality exists and is accessible on the device, which is the vulnerable component where malicious script can be injected and stored.
A user is affected if their QNAP device runs QTS firmware below 4.5.1.1456 (or below the relevant branch-specific thresholds) or QuTS hero below h4.5.1.1472, and the certificate configuration feature is accessible and used.
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.
From vendor data4.2.64.3.3.13154.3.4.1368
Apply the appropriate firmware update for your QTS or QuTS hero version from the list of fixed builds (QTS 4.2.6+, 4.3.3.1315+, 4.3.4.1368+, 4.3.6.1333+, 4.4.3.1354+, 4.5.1.1456+ or QuTS hero h4.5.1.1472+)
- Consultation4.0 h
- Implementation8.0 h
- Testing4.0 h
- Review / QA2.0 h
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Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2020-2498 — 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-2020-2498 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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