CVE-2025-12387Public exploitNetwork attack vector

Administrator-panel denial of service via invalid language setting

Published Jan 27, 2026 · Updated Jan 27, 2026

Denial of service in Pix-Link LV-WR21Q V108_108 allows remote attackers to disable the administrator panel via an HTTP request. The language-setting handler accepts a nonexistent lang value at /goform/setSysInfo, persists it, and then cannot serve a valid lang.js file. Authentication is not required, and the outage is limited to the administrator panel until the language setting is restored; routing and other functions remain available.

CVSS severity6.9
Medium
EPSS probability0.64%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Denial of service in Pix-Link LV-WR21Q V108_108 allows remote attackers to disable the administrator panel via an HTTP request. The language-setting handler accepts a nonexistent lang value at /goform/setSysInfo, persists it, and then cannot serve a valid lang.js file. Authentication is not required, and the outage is limited to the administrator panel until the language setting is restored; routing and other functions remain available.

The record

CVE
CVE-2025-12387
Published
Jan 27, 2026
Updated
Jan 27, 2026
Vendor
Pix-Link
Product
LV-WR21Q
Classifications
CWE-754, T1499.004
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jan 27, 2026CVE publishedPublication date reported by the CVE source.
  2. Jan 27, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=V108_108

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Pix-Link · LV-WR21Qversion=V108_108

Published CVSS scores

6.9CERT.PLCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

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No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-754Improper Check for Unusual or Exceptional Conditions
T1499.004Application or System Exploitation

Public exploit references

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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