CVE-2026-11405

Açıklama (NVD)

The web server binary /bin/httpd contains a hidden backdoor authentication mechanism in the login() function at 004c88b8. - The function contains a normal authentication path using MD5/hash-based password verification (prod_encode64/PasswordToMd5/check_rand_key). - After normal authentication fails, it calls GetValue("sys.rzadmin.password") to read a backdoor password from the device configuration. - It performs a direct strcmp() comparison (plaintext, not hashed) between the config value and the user-supplied password. A successful match grants role=2 (admin-level access) and creates a valid session. The rzadmin username is never checked — any username works with the backdoor

Yayın: 06.07.2026 · Son değişiklik: 25.10.2026

CVSS 3.1 metrikleri

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Hesaplanan temel puan: 9.8. CVSS hesaplayıcıda incele

Referanslar

• https://cwe.mitre.org/data/definitions/912.html
• https://kb.cert.org/vuls/id/213560
• https://www.kb.cert.org/vuls/id/213560