CVE intelligence and bounded remediation

CVE-2016-9202 — Cisco Email Security Appliance security vulnerability

Medium CVSS 6.1

A vulnerability in the web-based management interface of Cisco Email Security Appliance (ESA) Switches could allow an unauthenticated, remote attacker to conduct a persistent cross-site scripting (XSS) attack against a user of the affected interface on an affected device. More Information: CSCvb37346. Known Affected Releases: 9.1.1-036 9.7.1-066.

Severity
Medium
CVSS
6.1 (3.0)
Published
2016-12-14
CISA KEV
Not currently listed
Ecosystem
software/application
Weaknesses
CWE-79

Affected products

  • cisco / email_security_appliance / 9.1.1-036
  • cisco / email_security_appliance / 9.1.2-023
  • cisco / email_security_appliance / 9.1.2-028
  • cisco / email_security_appliance / 9.1.2-036
  • cisco / email_security_appliance / 9.4.0
  • cisco / email_security_appliance / 9.4.4-000

Showing 6 representative product identities from 16 source matches. Confirm exact affected versions with the linked vendor and NVD evidence.

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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