CVE intelligence and bounded remediation

CVE-2020-25890 — Kyocera Ecosys M2640Idw Firmware security vulnerability

Medium CVSS 6.1

The web application of Kyocera printer (ECOSYS M2640IDW) is affected by Stored XSS vulnerability, discovered in the addition a new contact in "Machine Address Book". Successful exploitation of this vulnerability can lead to session hijacking of the administrator in the web application or the execution of unwanted actions

Severity
Medium
CVSS
6.1 (3.1)
Published
2020-11-17
CISA KEV
Not currently listed
Ecosystem
operating-system
Weaknesses
CWE-79

Affected products

  • kyocera / ecosys_m2640idw_firmware

Matched remediation archetype

Cross-site scripting and unsafe browser output

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

Check exposure

  • Trace reflected, stored, and DOM-derived untrusted values into HTML, attributes, URLs, styles, scripts, and client-side template sinks.
  • Identify affected origins, authenticated user roles, sensitive browser capabilities, and where content is shared across tenants.
  • Review framework escaping, rich-text sanitization, legacy templates, and client-side rendering paths.

Remediate safely

  • Use context-aware framework output encoding and safe DOM APIs; keep untrusted data out of executable contexts.
  • Sanitize intentionally supported markup with a maintained allowlist policy and validate URLs and attributes separately.
  • Update affected rendering components and add tests for every output context using inert sentinel markup.

Authoritative sources

Complete CVE record and remediation plan

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