CVE intelligence and bounded remediation

CVE-2020-36283 — HID OMNIKEY 5427 and OMNIKEY 5127 readers are vulnerable to CSRF when using the EEM driver (Ethernet Emulation Mode)

Critical CVSS 9.6

HID OMNIKEY 5427 and OMNIKEY 5127 readers are vulnerable to CSRF when using the EEM driver (Ethernet Emulation Mode). By persuading an authenticated user to visit a malicious Web site, a remote attacker could send a malformed HTTP request to upload a configuration file to the device. An attacker could exploit this vulnerability to perform cross-site scripting attacks, Web cache poisoning, and other malicious activities.

Severity
Critical
CVSS
9.6 (3.1)
Published
2021-03-24
CISA KEV
Not currently listed
Ecosystem
operating-system
Weaknesses
CWE-352

Affected products

  • hidglobal / omnikey_5427_firmware
  • hidglobal / omnikey_5127_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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