CVE-2021-34356
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 cross-site scripting (XSS) vulnerability has been reported to affect QNAP device running Photo Station. If exploited, this vulnerability allows remote attackers to inject malicious code. We have already fixed this vulnerability in the following versions of Photo Station: Photo Station 6.0.18 ( 2021/09/01 ) 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 confidenceA cross-site scripting (XSS) vulnerability in QNAP Photo Station allows remote attackers to inject malicious code. The vulnerability is exploitable over the network and affects Photo Station versions prior to 6.0.18.
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< 6.0.18CVSS 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
- Required
- Scope
- Changed
- Confidentiality
- Low
- Integrity
- Low
- Availability
- None
CVSS:3.1/AV:N/AC:L/PR:L/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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Confirm Photo Station is installedLog into QNAP NAS admin panel and check if Photo Station application is installed and enabled. This can typically be viewed in App Center or via QCLI command line tool.Affected if Photo Station is installed and running on the NAS
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Identify installed Photo Station versionAccess QNAP Admin Panel > App Center > Photo Station > click on the application to view version information, or use QCLI command: qcli -a | grep -i photoAffected if Version displayed is below 6.0.18
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Verify Photo Station is network accessibleConfirm Photo Station web interface is accessible over network by accessing the Photo Station portal (typically /photo/ path on the NAS hostname or myqnapcloud.com link).Affected if Photo Station web interface is accessible and version is below 6.0.18
If Photo Station is installed and running with a version number lower than 6.0.18, the environment is affected by this XSS vulnerability.
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 · scoped6.0.18
Upgrade Photo Station to version 6.0.18 or later to remediate this vulnerability.
Photo Station 6.0.18 (released 2021/09/01)
- Access the QNAP administrative interface (QTS or QuTS hero)
- Navigate to the App Center or Photo Station application
- Check the current version of Photo Station installed
- If version is below 6.0.18, update Photo Station to version 6.0.18 or later via the QNAP App Center
- After update, verify the installed version is 6.0.18 or higher
Generated from the published advisory — verify against the referenced sources before acting.
- Consultation2.0 h
- Implementation2.0 h
- Testing2.0 h
- Review / QA1.0 h
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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-2021-34356 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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