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WplsoftApplication · Deltaww

CVE-2023-5461

MEDIUM · 5.9 CVSS v3.1 Published 2023-10-09
Mitigation only
No fix yet — a mitigation exists. There is no fixed release. A documented workaround reduces exposure in the meantime.
See remediation →
68/100
Remediation priority · Elevated
Remotely reachable 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
A vulnerability was found in Delta Electronics WPLSoft 2.51. It has been classified as problematic. Affected is an unknown function of the component Modbus Handler. The manipulation leads to cleartext transmission of sensitive information. It is possible to launch the attack remotely. The complexity of an attack is rather high. The exploitability is told to be difficult. The exploit has been disclosed to the public and may be used. The identifier of this vulnerability is VDB-241584. NOTE: The vendor was contacted early about this disclosure but did not respond in any way.

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 confidence

The vulnerability in Delta Electronics WPLSoft 2.51 involves cleartext transmission of sensitive information within the Modbus Handler component. Modbus is a widely used industrial communication protocol, and when sensitive data is transmitted without encryption, it can be intercepted by attackers who have network access. The attack complexity is rated as rather high with difficult exploitability, indicating that while the vulnerability is accessible remotely, successfully exploiting it requires significant technical effort.

MitigationImplement TLS/SSL encryption or use Modbus/TCP Security protocols to encrypt communications. Alternatively, deploy network segmentation and VPN tunnels to protect Modbus traffic from interception. Verify any changes in a test environment before production deployment to ensure compatibility with industrial processes.

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
WplsoftApplication
Affected:= 2.51

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
Network
Complexity
High
Privileges
None
User interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
None
Availability
None

CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/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 checks

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

  1. Confirm WPLSoft version 2.51 is installed
    Locate the WPLSoft installation on the system and check the version information, typically found in the software properties, 'About' section, or the executable file version details
    Affected if The installed version is exactly 2.51
  2. Verify Modbus communication is in use
    Check if Modbus Handler functionality is configured or active within WPLSoft, including any project files that reference Modbus communication modules or devices
    Affected if Modbus communication is configured or actively used with WPLSoft
  3. Inspect Modbus traffic for encryption
    Capture and analyze network traffic on the ports used by Modbus (typically port 502 for Modbus/TCP) using a network sniffer to determine if the data is transmitted in cleartext without TLS/SSL encryption
    Affected if Modbus traffic is transmitted in cleartext without any encryption layer
  4. Check Modbus configuration for security settings
    Examine WPLSoft project settings and Modbus device configurations to determine if any security protocols such as Modbus/TCP Security are enabled
    Affected if No encryption or security protocols are configured for Modbus communications

A user is affected if WPLSoft version 2.51 is installed AND Modbus communication is being used without encryption, resulting in cleartext transmission of sensitive data on the network.

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

Implement TLS/SSL encryption or use Modbus/TCP Security protocols to encrypt communications. Alternatively, deploy network segmentation and VPN tunnels to protect Modbus traffic from interception. Verify any changes in a test environment before production deployment to ensure compatibility with industrial processes.

Fix this in Wplsoft Scoped from the published advisory
  • Consultation6.0 h
  • Implementation12.0 h
  • Testing10.0 h
  • Review / QA4.0 h
32.0 hours of engineering $5,580
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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-2023-5461 in production — separate from our analysis above.

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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
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  • Version or environment caveats, and links to real fixes
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