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Vulnerability Details :

CVE-2025-12387

Summary
Assigner-CERT-PL
Assigner Org ID-4bb8329e-dd38-46c1-aafb-9bf32bcb93c6
Published At-27 Jan, 2026 | 11:57
Updated At-27 Jan, 2026 | 13:37
Rejected At-
Credits

Denial of Service in Pix-Link LV-WR21Q

A vulnerability in the Pix-Link LV-WR21Q router's language module allows remote attackers to trigger a denial of service (DoS) by sending a specially crafted HTTP POST request containing non-existing language parameter. This renders the server unable to serve correct lang.js file, which causes administrator panel to not work, resulting in DoS until the language settings is reverted to a correct value. The Denial of Service affects only the administrator panel and does not affect other router functionalities. The vendor was notified early about this vulnerability, but didn't respond with the details of vulnerability or vulnerable version range. Only version V108_108 was tested and confirmed as vulnerable, other versions were not tested and might also be vulnerable.

Vendors
-
Not available
Products
-
Metrics (CVSS)
VersionBase scoreBase severityVector
Weaknesses
Attack Patterns
Solution/Workaround
References
HyperlinkResource Type
EPSS History
Score
Latest Score
-
N/A
No data available for selected date range
Percentile
Latest Percentile
-
N/A
No data available for selected date range
Stakeholder-Specific Vulnerability Categorization (SSVC)
▼Common Vulnerabilities and Exposures (CVE)
cve.org
Assigner:CERT-PL
Assigner Org ID:4bb8329e-dd38-46c1-aafb-9bf32bcb93c6
Published At:27 Jan, 2026 | 11:57
Updated At:27 Jan, 2026 | 13:37
Rejected At:
▼CVE Numbering Authority (CNA)
Denial of Service in Pix-Link LV-WR21Q

A vulnerability in the Pix-Link LV-WR21Q router's language module allows remote attackers to trigger a denial of service (DoS) by sending a specially crafted HTTP POST request containing non-existing language parameter. This renders the server unable to serve correct lang.js file, which causes administrator panel to not work, resulting in DoS until the language settings is reverted to a correct value. The Denial of Service affects only the administrator panel and does not affect other router functionalities. The vendor was notified early about this vulnerability, but didn't respond with the details of vulnerability or vulnerable version range. Only version V108_108 was tested and confirmed as vulnerable, other versions were not tested and might also be vulnerable.

Affected Products
Vendor
Pix-Link
Product
LV-WR21Q
Default Status
unknown
Versions
Affected
  • V108_108 (custom)
Vendor
Pix-Link
Product
WR21Q
Default Status
unknown
Versions
Affected
  • V108_108 (custom)
Problem Types
TypeCWE IDDescription
CWECWE-754CWE-754 Improper Check for Unusual or Exceptional Conditions
Type: CWE
CWE ID: CWE-754
Description: CWE-754 Improper Check for Unusual or Exceptional Conditions
Metrics
VersionBase scoreBase severityVector
4.06.9MEDIUM
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N
Version: 4.0
Base score: 6.9
Base severity: MEDIUM
Vector:
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N
Metrics Other Info
Impacts
CAPEC IDDescription
Solutions

Configurations

Workarounds

Exploits

Credits

finder
Wojciech Cybowski
Timeline
EventDate
Replaced By

Rejected Reason

References
HyperlinkResource
https://cert.pl/en/posts/2026/01/CVE-2025-12386
third-party-advisory
https://www.pix-link.com/lv-wr21q
product
https://github.com/wcyb/security_research
exploit
Hyperlink: https://cert.pl/en/posts/2026/01/CVE-2025-12386
Resource:
third-party-advisory
Hyperlink: https://www.pix-link.com/lv-wr21q
Resource:
product
Hyperlink: https://github.com/wcyb/security_research
Resource:
exploit
▼Authorized Data Publishers (ADP)
CISA ADP Vulnrichment
Affected Products
Metrics
VersionBase scoreBase severityVector
Metrics Other Info
Impacts
CAPEC IDDescription
Solutions

Configurations

Workarounds

Exploits

Credits

Timeline
EventDate
Replaced By

Rejected Reason

References
HyperlinkResource
Information is not available yet
▼National Vulnerability Database (NVD)
nvd.nist.gov
Source:cvd@cert.pl
Published At:27 Jan, 2026 | 12:15
Updated At:27 Jan, 2026 | 14:59

A vulnerability in the Pix-Link LV-WR21Q router's language module allows remote attackers to trigger a denial of service (DoS) by sending a specially crafted HTTP POST request containing non-existing language parameter. This renders the server unable to serve correct lang.js file, which causes administrator panel to not work, resulting in DoS until the language settings is reverted to a correct value. The Denial of Service affects only the administrator panel and does not affect other router functionalities. The vendor was notified early about this vulnerability, but didn't respond with the details of vulnerability or vulnerable version range. Only version V108_108 was tested and confirmed as vulnerable, other versions were not tested and might also be vulnerable.

CISA Catalog
Date AddedDue DateVulnerability NameRequired Action
N/A
Date Added: N/A
Due Date: N/A
Vulnerability Name: N/A
Required Action: N/A
Metrics
TypeVersionBase scoreBase severityVector
Secondary4.06.9MEDIUM
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
Type: Secondary
Version: 4.0
Base score: 6.9
Base severity: MEDIUM
Vector:
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
CPE Matches

Weaknesses
CWE IDTypeSource
CWE-754Primarycvd@cert.pl
CWE ID: CWE-754
Type: Primary
Source: cvd@cert.pl
Evaluator Description

Evaluator Impact

Evaluator Solution

Vendor Statements

References
HyperlinkSourceResource
https://cert.pl/en/posts/2026/01/CVE-2025-12386cvd@cert.pl
N/A
https://github.com/wcyb/security_researchcvd@cert.pl
N/A
https://www.pix-link.com/lv-wr21qcvd@cert.pl
N/A
Hyperlink: https://cert.pl/en/posts/2026/01/CVE-2025-12386
Source: cvd@cert.pl
Resource: N/A
Hyperlink: https://github.com/wcyb/security_research
Source: cvd@cert.pl
Resource: N/A
Hyperlink: https://www.pix-link.com/lv-wr21q
Source: cvd@cert.pl
Resource: N/A

Change History

0
Information is not available yet

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