CVE-2026-19412 PUBLISHED

Hardcoded Credentials Vulnerability in CP Plus CP-XR-DE21-S Router

Assigner: CERT-In
Reserved: 10.08.2026 Published: 28.08.2026 Updated: 28.08.2026

This vulnerability exists in the CP Plus CP-XR-DE21-S 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.

Metrics

CVSS 4.0

CVSS Vector: CVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
CVSS Score: 8.7

Exploitability Metrics		Vulnerable System Impact Metrics		Subsequent System Impact Metrics
Attack Vector	Adjacent	Confidentiality	High	Confidentiality	None
Attack Complexity	Low	Integrity	High	Integrity	None
Attack Requirements	None	Availability	High	Availability	None
Privileges Required	None
User Interaction	None

CVSS 4.0

Product Status

Vendor	CP Plus
Product	CP-XR-DE21-S Router
Versions	Default: unaffected Version version 1.057.043_0027 or below is affected

Solutions

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

Credits

This vulnerability is reported by a team of security researchers including Stalin S, Harini M, Rohit Surya A T and Reginald Alfret V. finder

References

https://www.cert-in.org.in/s2cMainServlet?pageid=PUBVLNOTES01&VLCODE=CIVN-2026-0428

Problem Types

CWE-798: Use of Hard-coded Credentials CWE

Impacts

CAPEC-191 Read Sensitive Constants Within an Executable