CVE-2026-11405

NONECVSS 0.0Trending — 3 sources updated this week
0.0
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • No confirmed exploitation signals yet
CISA-KEV: Not listedEPSS: —CVSS: —Exploit: NoneExposed: 0

No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.

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 v3
—
EG Score
0.0(none)
EPSS
—
KEV
Not listed

Published

July 6, 2026

Last Modified

July 6, 2026

References (3)

Vendor Advisories for CVE-2026-11405(1)

These vendors published their own advisory mentioning this CVE — often with vendor-specific remediation steps + affected product lists not in NVD.

Data Freshness Timeline

(refreshed 3× in last 7d / 3× in last 30d)

Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.

  1. 2026-07-06 21:35 UTCNVD update
  2. 2026-07-06 19:47 UTCEG score recompute
  3. 2026-07-06 19:44 UTCMITRE cvelistV5first tracked

Frequently asked(3)

What is CVE-2026-11405?
CVE-2026-11405 is a none vulnerability published on July 6, 2026. 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 (prodencode64/PasswordToMd5/checkrand_key). After normal authentication fails, it…
When was CVE-2026-11405 disclosed?
CVE-2026-11405 was first published in the National Vulnerability Database on July 6, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
How do I remediate CVE-2026-11405?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-11405, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

Dependency Blast Radius

Explore the affected products and dependency analysis for CVE-2026-11405

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