CVE intelligence and bounded remediation

CVE-2021-39245 — Hardcoded .htaccess Credentials for getlogs.cgi exist on Altus Nexto, Nexto Xpress, and Hadron Xtorm devices

High CVSS 7.5

Hardcoded .htaccess Credentials for getlogs.cgi exist on Altus Nexto, Nexto Xpress, and Hadron Xtorm devices. This affects Nexto NX3003 1.8.11.0, Nexto NX3004 1.8.11.0, Nexto NX3005 1.8.11.0, Nexto NX3010 1.8.3.0, Nexto NX3020 1.8.3.0, Nexto NX3030 1.8.3.0, Nexto NX5100 1.8.11.0, Nexto NX5101 1.8.11.0, Nexto NX5110 1.1.2.8, Nexto NX5210 1.1.2.8, Nexto Xpress XP300 1.8.11.0, Nexto Xpress XP315 1.8.11.0, Nexto Xpress XP325 1.8.11.0, Nexto Xpress XP340 1.8.11.0, and Hadron Xtorm HX3040 1.7.58.0.

Severity
High
CVSS
7.5 (3.1)
Published
2021-08-23
CISA KEV
Not currently listed
Ecosystem
operating-system
Weaknesses
CWE-798

Affected products

  • altus / nexto_nx3003_firmware / 1.8.11.0
  • altus / nexto_nx3004_firmware / 1.8.11.0
  • altus / nexto_nx3005_firmware / 1.8.11.0
  • altus / nexto_nx3010_firmware / 1.8.3.0
  • altus / nexto_nx3020_firmware / 1.8.3.0
  • altus / nexto_nx3030_firmware / 1.8.3.0

Showing 6 representative product identities from 15 source matches. Confirm exact affected versions with the linked vendor and NVD evidence.

Matched remediation archetype

Authentication bypass and missing authentication

This catalog composition supplies bounded fallback guidance. Explicitly reviewed curated workflows load with the complete record below.

Check exposure

  • Map every affected endpoint and protocol path, including alternate ports, legacy routes, recovery flows, service accounts, and machine-to-machine access.
  • Confirm which deployments enable the affected authentication mode and whether the interface is reachable from untrusted networks.
  • Review session, token, credential, and proxy trust configuration without attempting account takeover.

Remediate safely

  • Apply the supported fix and centralize fail-closed authentication before protected request handling.
  • Remove default or embedded credentials, rotate affected secrets and sessions, and bind authentication decisions to the intended audience and channel.
  • Add negative tests for alternate routes, malformed or absent credentials, recovery flows, and proxy-derived identity.

Authoritative sources

Complete CVE record and remediation plan

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