CVE intelligence and bounded remediation
CVE-2025-25625 — Fs S3150-8T2F Firmware security vulnerability
A stored cross-site scripting vulnerability exists in FS model S3150-8T2F switches running firmware s3150-8t2f-switch-fsos-220d_118101 and web firmware v2.2.2, which allows an authenticated web interface user to bypass input filtering on user names, and stores un-sanitized HTML and Javascript on the device. Pages which then present the user name without encoding special characters will then cause the injected code to be parsed by the browsers of other users accessing the web interface.
- Severity
- Medium
- CVSS
- 5.4 (3.1)
- Published
- 2025-03-13
- CISA KEV
- Not currently listed
- Ecosystem
- operating-system
- Weaknesses
- CWE-79
Affected products
- fs / s3150-8t2f_firmware / 2.2.2
- fs / s3150-8t2f_firmware / s3150-8t2f-switch-fsos-220d_118101
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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