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CVE-2026-19412— Hardcoded Credentials Vulnerability in CP Plus CP-XR-DE21-S Router

Quick assessment

Affected
CP Plus CP-XR-DE21-S Router
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

该漏洞存在于 CP Plus CP-XR-DE21-S 路由器中，原因是固件中硬编码了 HTTP Digest 认证凭据，且这些凭据在所有运行受影响固件的设备之间完全相同。拥有本地网络访问权限的攻击者可以通过从固件中提取这些硬编码的认证信息来利用此漏洞。 成功利用该漏洞后，攻击者可获得未授权的行政访问权限，并能在目标设备上执行特权操作。

CVSS 8.7 · High

Affected Version Matrix 1

VendorProduct Version RangeStatus
CP Plus CP-XR-DE21-S Router version 1.057.043_0027 or below affected
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I. Basic Information for CVE-2026-19412

Vulnerability Information
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Vulnerability Title
Hardcoded Credentials Vulnerability in CP Plus CP-XR-DE21-S Router
Source: CVE Program / CVE List V5
Vulnerability Description
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.
Source: CVE Program / CVE List V5
CVSS Information
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
Source: CVE Program / CVE List V5
Vulnerability Type
使用硬编码的凭证
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
CP Plus CP-XR-DE21-S Router version 1.057.043_0027 or below -

II. Public POCs for CVE-2026-19412

# POC Description Source Link Shenlong Link
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III. Intelligence Information for CVE-2026-19412

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Other References for CVE-2026-19412 (1)

IV. Related Vulnerabilities

Same product: CP-XR-DE21-S Router
Same vendor: CP Plus
Same weakness: CWE-798

V. Comments for CVE-2026-19412

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