User redirection and script injection via Host header
Published Feb 14, 2025 · Updated Aug 8, 2026
Improper input validation in WatchGuard Fireware OS allows remote attackers to manipulate Web UI responses through the Host header. The Web UI inadequately validates the request's HTTP Host value before using it in responses, enabling attacker-controlled destinations or JavaScript to enter returned content. Exploitation requires network access to the management interface and active user interaction, and can redirect users, poison caches, or inject script into Web UI responses.
Summary
What happened
Improper input validation in WatchGuard Fireware OS allows remote attackers to manipulate Web UI responses through the Host header. The Web UI inadequately validates the request's HTTP Host value before using it in responses, enabling attacker-controlled destinations or JavaScript to enter returned content. Exploitation requires network access to the management interface and active user interaction, and can redirect users, poison caches, or inject script into Web UI responses.
The record
- CVE
- CVE-2025-0178
- Published
- Feb 14, 2025
- Updated
- Aug 8, 2026
- Vendor
- WatchGuard Technologies, Inc.
- Product
- Fireware OS
- Classifications
- CWE-20, T1189
- Attack vector
- network
- Privileges
- unauthenticated
Timeline
How it unfolded
- Feb 14, 2025CVE publishedPublication date reported by the CVE source.
- Aug 8, 2026Record updatedLatest update available in the CVE record.
Exploitability
Present is not the same as exploitable
Compare your product and version with the public record. A matching version still requires validation against your environment.
Is a vulnerable build present?
Compare these published version ranges with your installed build and any vendor patches.
- Affected versionversion=12.0 <12.11.1
- Affected versionversion=12.0 <12.5.13
What conditions does exploitation require?
What is affected?
Published CVSS scores
CVSS describes severity. EPSS estimates exploitation probability.
Attacks
What attackers are doing with it
Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.
Public exploit references
No public exploit references are available in this record.
Labels summarize the accepted research assessment. They do not indicate a test against your environment.
Technologies
Your stack
See the directory against your own environment.
Your stack
Check the software in your environment
Book a demo to see how Hinoki identifies affected software and validates exploitability in your environment.
Book a demo