Accessibility Options |  Sitemap |  Contact Us
   
 
 
 
HOME space ABOUTCERTIn space KNOWLEDGEBASE space TRAINING space ADVISORIES space VULNOTES space space Facebook space x space insta space youtube space Linkedin
WLine
DigitalIndia
WLine
csk
WLine
Full Member FIRST
Line
Operational Member TFCSIRT
Line
Accredited Member APCERT
Line
Global Research Partner APWG
Line
Associate Partner Charter
Line
CNA
WLine
 Directions by CERT-In under  Section 70B, Information  Technology Act 2000
WLine
 Guidelines on Information  Security Practices for  Government Entities
WLine
  Blueprint for Reducing NEW
  Exposure and Defending against
  AI-Assisted Vulnerabilities
  Exploitation in Digital
  Infrastructure
WLine
 15 Elemental Cyber NEW
 Defense Controls for Micro,
 Small, and Medium Enterprises
 (MSMEs)
WLine
 Technical Guidelines on NEW  SBOM, QBOM & CBOM, AIBOM
 and HBOM Version 2.0
WLine
 Cyber Security Guidelines for
 Smart City Infrastructure NEW
WLine
 Cyber Security Framework
 and Guidelines for Space NEW
 including Satellite
 Communication
About CERT-in
Line
point point Client's /Citizen's Charter
Line
point point Roles & Functions
Line
point point Advisory Committee
Line
point point Act/Rules/Regulations
Line
point point Internal Complaint Committee         (ICC) 
Line
point point RFC2350 
line
point point Press  
Line
point point Tender 
Line
point point Subscribe Mailing List
Line
point point Contact Us
Line
Line
Reporting
point
 Incident Reporting
point
Line
point
 Vulnerability Reporting
point
Line
point
 Feedback
point
Line
KnowledgeBase
Line
point Point Guidelines
Line
point Point Presentations
Line
point Point White Papers 
Line
point Point Annual Report 
Line
Line
Line
line
Line
line
line
Advisories
Line
VulnerabilityNotes
Line
RelatedLinks
Line
point Point World CERTs
Line
point point Antivirus Resources
line
point point FAQ
line
line
Line
Line
line
line
line
line
line
line
line
line
line
line
line
line
line
line
line
line
line
line
line
line
line
line
spacer
Home - Vulnerability NotesPrint
point
CERT-In Vulnerability Note CIVN-2026-0428
Hardcoded Credentials Vulnerability in CP Plus Router

Original Issue Date:August 28, 2026

Severity Rating: HIGH

Systems Affected

  • CP Plus CP-XR-DE21-S Router - firmware version 1.057.043_0027 or below

Overview

A vulnerability has been reported in CP Plus Router, which could allow an attacker on the local network to gain unauthorized administrative access to the targeted device.

Target Audience:
End-users/ Administrators of CP Plus CP-XR-DE21-S Router.

Risk Assessment:
Unauthorized administrative access to the targeted device.

Impact Assessment:
Gain full administrative control of the targeted device.

Description

The CP Plus CP-XR-DE21-S is a 4G LTE router designed for high-speed internet connectivity, suitable for home and small-office use.

This vulnerability exists in the CP Plus Router due to the presence of hardcoded HTTP Digest authentication credentials in the firmware that are identical across all devices running the affected firmware. An attacker with access to the local network could exploit this vulnerability by obtaining the hardcoded authentication information from the firmware.

Successful exploitation of this vulnerability could allow the attacker to gain unauthorized administrative access and perform privileged operations on the targeted device.

Credit

This vulnerability is reported by Stalin S, Harini M, Rohit Surya A T and Reginald Alfret V.

Solution

Upgrade CP Plus CP-XR-DE21-S Router to patched firmware version 1.057.043_0034
https://cpplusworld.com/prodassets/firmware/02a50613-6182-41dc-8b7f-cd58f1e6cba5.bin

Vendor Information

CP-Plus
https://cpplusworld.com/prodassets/firmware/02a50613-6182-41dc-8b7f-cd58f1e6cba5.bin

References

CP-Plus
https://cpplusworld.com/prodassets/firmware/02a50613-6182-41dc-8b7f-cd58f1e6cba5.bin

CVE Name
CVE-2026-19412

Disclaimer

The information provided herein is on "as is" basis, without warranty of any kind.

Contact Information

Email: info@cert-in.org.in
Phone: +91-11-22902657

Postal address

Indian Computer Emergency Response Team (CERT-In)
Ministry of Electronics and Information Technology
Government of India
Electronics Niketan
6, CGO Complex, Lodhi Road,
New Delhi - 110 003
India

 
Indian Computer Emergency Response Team - CERT-In, Ministry of Electronics and Information Technology, Government of India.
Website Policies |  Terms of Use |  Help Last Updated On August 29, 2026