Tew 831dr FirmwareOperating system · Trendnet

CVE-2022-30325

HIGH · 8.8 CVSS v3.1 Published 2022-06-16
Mitigation only
No fix yet — a mitigation exists. There is no fixed release. A documented workaround reduces exposure in the meantime.
See remediation →
93/100
Remediation priority · Urgent
No privileges Zero-click

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 · unedited
An issue was found on TRENDnet TEW-831DR 1.0 601.130.1.1356 devices. The default pre-shared key for the Wi-Fi networks is the same for every router except for the last four digits. The device default pre-shared key for both 2.4 GHz and 5 GHz networks can be guessed or brute-forced by an attacker within range of the Wi-Fi network.

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 confidence

The TRENDnet TEW-831DR router ships with a default Wi-Fi pre-shared key (PSK) that follows a predictable pattern - the same base key for all devices with only the last four digits varying. An attacker within Wi-Fi range can brute-force this limited keyspace to recover the full PSK and gain unauthorized access to the network.

MitigationImmediately change the default Wi-Fi PSK to a strong, unique password that does not follow any predictable pattern. Ensure the new password is sufficiently complex and different from the default.

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
Tew 831dr FirmwareOperating system
Affected:= 1.0_601.130.1.1356

CVSS 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
Adjacent
Complexity
Low
Privileges
None
User interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High

CVSS:3.1/AV:A/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 checks

Work through these to decide whether this CVE applies to you.

  1. Identify router model and firmware version
    Access the router web interface (typically at 192.168.10.1) and navigate to Status or System Info page to view the device model and firmware version
    Affected if The device is a TRENDnet TEW-831DR running firmware version 1.0_601.130.1.1356
  2. Verify Wi-Fi is enabled
    Check the router's Wireless settings page to confirm Wi-Fi is turned on
    Affected if Wi-Fi is enabled and the router is vulnerable to wireless attacks
  3. Inspect the current Wi-Fi PSK
    Navigate to Wireless Security settings and note the pre-shared key. Look for whether it appears to follow a pattern with only the last four digits changing from a default base value
    Affected if The PSK appears to use a default pattern with predictable base characters and only variable last four digits
  4. Check for recent PSK changes
    If available, review the router admin logs or settings for any indication of when the Wi-Fi password was last changed from defaults
    Affected if The PSK has never been changed from default or was changed recently to a pattern-based password

You are affected if you own a TEW-831DR router on firmware 1.0_601.130.1.1356 with Wi-Fi enabled and a PSK that still follows the predictable default pattern with only four variable digits.

Generated from the published advisory. Verify against your own configuration.

Check your environment

Paste your version and any relevant configuration and it will be compared against the affected criteria above. Do not include secrets or credentials.

AI-assisted, checked against the advisory. Informational, not a guarantee.

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 data
Mitigation available No clean upgrade yet — mitigate in the meantime
Mitigation

Immediately change the default Wi-Fi PSK to a strong, unique password that does not follow any predictable pattern. Ensure the new password is sufficiently complex and different from the default.

Fix this in Tew 831dr Firmware Scoped from the published advisory
  • Consultation1.0 h
  • Implementation1.0 h
  • Testing1.0 h
  • Review / QA0.5 h
3.5 hours of engineering $750
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Scan for this in your stack

Free · runs locally
dbcve dependency scanner

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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 sources

Practitioner notes

Contributed

Peer-ranked notes from engineers who’ve handled CVE-2022-30325 in production — separate from our analysis above.

No notes yet

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What this is

A place for practitioners to share what actually worked: a mitigation you’ve tested, a configuration change, a version- or environment-specific caveat, or a link to a verified patch. The most useful notes rise to the top as peers upvote them, so the signal stays high.

What belongs here
  • 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
  • No spam, self-promotion, credentials, or personal data