CVE-2025-62843
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 · uneditedAn improper restriction of communication channel to intended endpoints vulnerability has been reported to affect QHora. If an attacker gains physical access, they can then exploit the vulnerability to gain the privileges that were intended for the original endpoint. We have already fixed the vulnerability in the following version: QuRouter 2.6.3.009 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 physical security vulnerability in QNAP QHora routers where improper restriction of communication channels allows an attacker with physical access to escalate privileges to those intended for the original endpoint. The vulnerability allows bypassing intended access controls when physical access is obtained.
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= 2.6.0.239= 2.6.0.688= 2.6.1.028= 2.6.2.007CVSS 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
- Physical
- Complexity
- Low
- Privileges
- None
- User interaction
- None
- Scope
- Unchanged
- Confidentiality
- High
- Integrity
- High
- Availability
- High
CVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
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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Access router admin interfaceLog into the QNAP QHora router web admin panel (typically at http://192.168.1.1 or the IP assigned to the router). Navigate to the System Settings or Administration section to locate the firmware version information.Affected if The displayed firmware version matches any of these exact versions: 2.6.0.239, 2.6.0.688, 2.6.1.028, or 2.6.2.007
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Check firmware via CLIAccess the router via SSH or Telnet if enabled. Use the command 'fw_printenv' or check '/etc/version' to retrieve the installed firmware version.Affected if The firmware version displayed is one of the four affected versions listed above
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Verify physical access exposureDetermine if the device is deployed in a location where unauthorized individuals could gain physical access (e.g., unsecured office, public area, shared rack).Affected if The router is physically accessible to unauthorized persons AND the firmware version matches an affected version
A user is affected if the QNAP QHora router runs firmware version 2.6.0.239, 2.6.0.688, 2.6.1.028, or 2.6.2.007 and unauthorized physical access to the device is possible.
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 · scopedUpdate QuRouter firmware to version 2.6.3.009 or later. If immediate patching is not feasible, implement strict physical access controls to prevent unauthorized physical access to the device.
QuRouter 2.6.3.009 or later
- Check the current QuRouter firmware version via the admin interface or system status page
- Create a backup of the current router configuration
- Download QuRouter firmware version 2.6.3.009 or later from the official QNAP website
- Access the QuRouter admin panel, navigate to Administration > Firmware Update
- Upload and apply the new firmware version
- After reboot, verify the firmware version has been updated successfully
- Restore the backed-up configuration if needed
Generated from the published advisory — verify against the referenced sources before acting.
- Consultation1.0 h
- Implementation2.0 h
- Testing2.0 h
- Review / QA1.0 h
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Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2025-62843 — 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-2025-62843 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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- Version or environment caveats, and links to real fixes
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