OS Command InjectionWeakness · CWE-78

CVE-2026-42062

CRITICAL · 9.8 CVSS v3.0 Published 2026-05-13
Mitigation only
No fix yet — a mitigation exists. There is no fixed release. A documented workaround reduces exposure in the meantime.
See remediation →
100/100
Remediation priority · Urgent
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
ELECOM wireless LAN access point devices contain an OS command injection in processing of username parameter. If processing a crafted request, an arbitrary OS command may be executed. No authentication is required.

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

ELECOM wireless LAN access points contain an OS command injection vulnerability in the username parameter processing logic. An unauthenticated remote attacker can send specially crafted requests containing malicious OS commands that will be executed with the privileges of the vulnerable service.

MitigationApply vendor firmware updates when available. If no patch exists, implement network segmentation to restrict access to the AP management interface and consider replacing affected devices.

Verify against the referenced sources before acting — the references below are authoritative for this CVE, this summary is not.

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
Low
Privileges
None
User interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High

CVSS:3.0/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 checks

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

  1. Identify the device manufacturer and model
    Access the device management interface or check the device label/web interface for manufacturer information. Look for ELECOM branding and confirm it is a wireless LAN access point.
    Affected if The device is an ELECOM wireless LAN access point and is exposed to untrusted networks.
  2. Verify remote management interface exposure
    Determine if the device's web management interface (typically HTTP/HTTPS on ports 80, 443, or custom ports) is accessible from untrusted networks such as the internet or guest networks.
    Affected if The remote management interface is exposed to unauthenticated network attackers.
  3. Check for unexpected system processes or network connections
    If you have shell access (via debug mode, SSH, or Telnet if enabled), run commands to list running processes (ps) and active network connections (netstat) to identify any unfamiliar or suspicious processes spawned by the web server.
    Affected if Unexpected processes are running, particularly shell interpreters or network listeners not associated with normal AP operations.
  4. Inspect HTTP request handling for the username parameter
    If you can capture network traffic or have access to logs, examine HTTP POST requests to the login interface. Look for the username parameter and any anomalous characters or patterns that may indicate injection attempts.
    Affected if The username parameter accepts and processes special characters (such as ;, |, &, $) without sanitization, allowing command injection.
  5. Review authentication logs for failed login anomalies
    Check system logs or authentication logs for entries showing command injection attempts, unusual command execution, or privilege escalation patterns in the username field.
    Affected if Logs contain evidence of command injection attempts or unexpected command executions originating from the authentication interface.

A user is affected if they operate an ELECOM wireless LAN access point with its management interface exposed to untrusted networks, as the vulnerability can be exploited without authentication.

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

Apply vendor firmware updates when available. If no patch exists, implement network segmentation to restrict access to the AP management interface and consider replacing affected devices.

Have this fixed Scoped from the published advisory
  • Consultation4.0 h
  • Implementation8.0 h
  • Testing4.0 h
  • Review / QA2.0 h
18.0 hours of engineering $3,200
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Scan for this in your stack

Free · runs locally
dbcve dependency scanner

Check whether your project pulls in CVE-2026-42062 — 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 sources

Practitioner notes

Contributed

Peer-ranked notes from engineers who’ve handled CVE-2026-42062 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
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