Vulnerability in Watchguard Fireware OS (CVE-2025-0178)
Summary
Vulnerability in Watchguard Fireware OS (CVE-2025-0178). Risk of unauthorized operations or information disclosure. Exploitable via Host header.
Original description
The description as published by the source.
Improper Input Validation vulnerability in WatchGuard Fireware OS allows an attacker to manipulate the value of the HTTP Host header in requests sent to the Web UI. An attacker could exploit this vulnerability to redirect users to malicious websites, poison the web cache, or inject malicious JavaScript into responses sent by the Web UI.
This issue affects Fireware OS: from 12.0 up to and including 12.11.
Source: GitHub Security Advisories (Global) NVD GitHub Advisory
Auto-generated summary
Assembled by SecPulse from the source data (CVSS, CWE, affected versions) using templates — no AI involved. Check the original description and references below for exact details.
A vulnerability tracked as CVE-2025-0178 has been found in Watchguard Fireware OS.
Attackers can target a specific entry point like Host header over the network to misuse the product.
Risk of unauthorized operations or information disclosure. CVSS score: 6.1/10.
What to do: apply the vendor's official patched release.
If unsure, ask your IT team or search "Watchguard Fireware OS CVE-2025-0178" on the vendor's site.
CVE-2025-0178 (Watchguard Fireware OS) — CWE-20 / CVSS v3 6.1
Attack vector: remote (network-reachable) / unauthenticated
Attack surface: Host header
Plan: 1) Audit SBOM/dependencies, 2) Stage→prod upgrade, 3) Add WAF/proxy monitoring on affected endpoints, 4) Hunt IOCs in logs.
Refs: see the GHSA / vendor advisory / patched release linked on this page.
A vulnerability (CWE-20) exists in Watchguard Fireware OS. Attackers reach the vulnerable code path via Host header without authentication.
Check the vendor advisory for the affected versions of Watchguard Fireware OS. Attack surface: Host header.
Severity: Medium (CVSS 6.1/10). Risk of unauthorized operations or information disclosure.
Update to the patched release per vendor advisory.
Until the patch is applied: disable the affected feature, apply WAF rules, or restrict access via network ACLs.
Search webserver/proxy logs for unusual request patterns matching this CVE's known IOCs. Audit SBOM/dependencies to find affected services.
Response actions
Concrete steps and command examples for SOC/SRE teams to execute in order
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1Identify exposure identify
Audit SBOM/dependencies for affected components.資産台帳・SBOM・依存マニフェストで Watchguard Fireware OS を使っているサービスとバージョンを洗い出す。
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2Post-deployment verification verify
Confirm patched version is live in productionパッチ適用後、ステージングで PoC または同等の悪用パターンを再現して脆弱性が閉じたことを確認。本番ではアクセスログ・WAF でアラート再発が無いか継続監視。
References
- patch watchguard.com
- web nvd.nist.gov
- web psirt.watchguard.com
- web github.com