CVE intelligence and bounded remediation

CVE-2023-28895 — The password for access to the debugging console of the PoWer Controller chip (PWC) of the MIB3 infotainment is hard-coded in the firmware

Medium CVSS 6.8

The password for access to the debugging console of the PoWer Controller chip (PWC) of the MIB3 infotainment is hard-coded in the firmware. The console allows attackers with physical access to the MIB3 unit to gain full control over the PWC chip. Vulnerability found on Škoda Superb III (3V3) - 2.0 TDI manufactured in 2022.

Severity
Medium
CVSS
6.8 (3.1)
Published
2023-12-01
CISA KEV
Not currently listed
Ecosystem
operating-system
Weaknesses
CWE-259, CWE-798

Affected products

  • preh / mib3_firmware

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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