CVE intelligence and bounded remediation

CVE-2019-1273 — Microsoft Windows 10 security vulnerability

Medium CVSS 5.4

A cross-site-scripting (XSS) vulnerability exists when Active Directory Federation Services (ADFS) does not properly sanitize certain error messages, aka 'Active Directory Federation Services XSS Vulnerability'.

Severity
Medium
CVSS
5.4 (3.1)
Published
2019-09-11
CISA KEV
Not currently listed
Ecosystem
windows/system
Weaknesses
CWE-79

Affected products

  • microsoft / windows_10 / 1803
  • microsoft / windows_10 / 1809
  • microsoft / windows_10 / 1903
  • microsoft / windows_server_2016 / 1803
  • microsoft / windows_server_2016 / 1903
  • microsoft / windows_server_2019

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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