CVE intelligence and bounded remediation

CVE-2013-6276 — QNAP F_VioCard 2312 and F_VioGate 2308 have hardcoded entries in authorized_keys files

Critical CVSS 9.8

QNAP F_VioCard 2312 and F_VioGate 2308 have hardcoded entries in authorized_keys files. NOTE: 1. All active models are not affected. The last affected model was EOL since 2010. 2. The legacy authorization mechanism is no longer adopted in all active models

Severity
Critical
CVSS
9.8 (3.1)
Published
2021-08-09
CISA KEV
Not currently listed
Ecosystem
operating-system
Weaknesses
CWE-798

Affected products

  • qnap / viocard-30_firmware / 2312_2.1.0
  • qnap / viocard-100_firmware
  • qnap / viocard-300_firmware / rc_b3722
  • qnap / viocard-300_firmware / rs_b4631
  • qnap / viogate-340a_firmware
  • qnap / viogate-340_firmware / 2308_2.1.0

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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