CVE-2026-11405
criticalpriority · track · 10EPSS 0.008 · 55 %ileexploit · PoCEURUEPSS · scored 2026-10-27
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
cvss
Technical severity, 0–10. One row per scoring source.
base score 0–10 · higher = more severe · hover a vector to decode
ssvc
A stakeholder decision — act, attend, or track — from exploitation and impact.
weaknesses
The CWE weakness classes this flaw belongs to.
exploits (1)
Public proof-of-concept and weaponised exploit code.
- HORKimhab/CVE-2026-11405CVE-2026-11405 - DraftPoC · poc_in_github
affected products (10)
Products and version ranges known to be affected.
also known as (5)
Other names and identifiers for this entity.
sources
Which sources assert this record, and when.
references (8)
External citations — patches, advisories, analysis.
- https://cwe.mitre.org/data/definitions/912.htmlcnnvd
- https://kb.cert.org/vuls/id/213560cnnvd
- https://www.kb.cert.org/vuls/id/213560cnnvd
- https://cwe.mitre.org/data/definitions/912.htmlenisa_euvd
- https://kb.cert.org/vuls/id/213560enisa_euvd
- https://cwe.mitre.org/data/definitions/912.htmlnvd
- https://kb.cert.org/vuls/id/213560nvd
- https://www.kb.cert.org/vuls/id/213560nvd
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