CVE-2025-70998
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 · uneditedUTT HiPER 810 / nv810v4 router firmware v1.5.0-140603 was discovered to contain insecure default credentials for the telnet service, possibly allowing a remote attacker to gain root access via a crafted script.
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 confidenceThe UTT HiPER 810 / nv810v4 router firmware v1.5.0-140603 contains insecure default credentials for the telnet service. An unauthenticated remote attacker with network access to the telnet port could use these default credentials to gain root shell access to the router device.
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= 1.5.0-140603CVSS 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
- None
- Scope
- Unchanged
- Confidentiality
- High
- Integrity
- High
- Availability
- High
CVSS:3.1/AV:N/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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Identify the router modelLog into the device web interface or check the physical device label to confirm the exact model number is UTT HiPER 810 or nv810v4Affected if The device is not one of these two models, the check does not apply
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Check the firmware versionAccess the device admin panel or use the command line interface (CLI) and look for the firmware version displayed in the system information or status page. Compare this version to 1.5.0-140603Affected if The installed firmware version is exactly 1.5.0-140603
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Verify if telnet service is enabledCheck the device configuration for any setting that enables or activates the telnet service. This may appear in services, access control, or remote management settings. Attempt a telnet connection to the device IP on port 23 to confirm the service is listeningAffected if Telnet service is enabled and port 23 is open and responding
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Confirm whether default credentials have been changedAttempt to log in via telnet using the factory default credentials. If the default username and password have not been changed from the manufacturer defaults, the device is vulnerableAffected if The default credentials have not been changed and telnet login succeeds with factory defaults
A device is affected if it is a UTT HiPER 810 or nv810v4 running firmware 1.5.0-140603 with telnet enabled and the hardcoded default credentials still in use
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 dataImmediately change or disable the default telnet credentials, disable the telnet service if not required for operations, and monitor for unauthorized access attempts.
- Consultation3.0 h
- Implementation2.0 h
- Testing2.0 h
- Review / QA1.0 h
An estimate, not a bill — we confirm scope with you before any work starts. Need it this week? Rush from $2,304.
Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2025-70998 — 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-2025-70998 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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