CVE intelligence and bounded remediation

CVE-2022-36133 — The WebConfig functionality of Epson TM-C3500 and TM-C7500 devices with firmware version WAM31500 allows authentication bypass

Critical CVSS 9.1

The WebConfig functionality of Epson TM-C3500 and TM-C7500 devices with firmware version WAM31500 allows authentication bypass.

Severity
Critical
CVSS
9.1 (3.1)
Published
2022-11-25
CISA KEV
Not currently listed
Ecosystem
operating-system
Weaknesses
CWE-287

Affected products

  • epson / tm-c3500_firmware / wam31500
  • epson / tm-c3510_firmware / wam31500
  • epson / tm-c3520_firmware / wam31500
  • epson / tm-c7500_firmware / wam31500
  • epson / tm-c7500g_firmware / wam31500
  • epson / tm-c7510_firmware / wam31500

Showing 6 representative product identities from 9 source matches. Confirm exact affected versions with the linked vendor and NVD evidence.

Matched remediation archetype

Authentication bypass and missing authentication

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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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