FortiosOperating system · Fortinet
CVE-2018-9185
Official description Straight from the sourceThe vendor's or NVD's own wording, published unedited. Authoritative, but often terse — it says what broke, rarely what to do.
NVD · uneditedAn information disclosure vulnerability in Fortinet FortiOS 6.0.0 and below versions reveals user's web portal login credentials in a Javascript file sent to client-side when pages bookmarked in web portal use the Single Sign-On feature.
Technical summary Written by usOur analysis, written from the advisory, the CVSS vector and the affected-version data. It adds context the advisory leaves out, and never invents facts that are not in the source.
dbcve analysis · moderate confidenceFortiOS 6.0.0 and below contains an information disclosure vulnerability where web portal login credentials are exposed in a JavaScript file sent to the client-side when users bookmark pages that utilize the Single Sign-On feature.
Verify against the referenced sources before acting — the references below are authoritative for this CVE, this summary is not.
Affected products & versions What the vendor confirmedThe version ranges the vendor confirmed as vulnerable. If your version sits inside a range here, treat yourself as exposed until you have upgraded.
NVD · CPE data
FortiosOperating system
<= 6.0.0CVSS breakdown How the score is builtThe industry scoring standard. It rates how the flaw is reached, what it takes to exploit, and what an attacker gains — the score is derived from those, not the other way round.
From the vector- Attack vector
- Network
- Complexity
- High
- Privileges
- None
- User interaction
- None
- Scope
- Unchanged
- Confidentiality
- High
- Integrity
- High
- Availability
- High
CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
Am I affected? How to checkSteps we derive from the advisory and the affected-version data, so you can decide whether this CVE reaches your setup. They are a guide, not a scan — your own configuration is the authority.
dbcve checksWork through these to decide whether this CVE applies to you.
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Identify FortiOS versionRun 'get system status' or 'diagnose system version' command on the FortiGate device to retrieve the installed FortiOS versionAffected if The displayed version is 6.0.0 or any version lower than 6.0.1
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Confirm web portal is configuredCheck for web portal configuration using 'get vpn ssl web portal' or review web portal settings in the FortiGate GUI under VPN > SSL-VPN Web PortalAffected if A web portal is configured and active on the device
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Verify Single Sign-On feature is enabledExamine the web portal configuration for SSO-related settings such as 'pre-authentication' or 'sso' in the portal settings. Check if the portal uses Windows AD or other SSO integrationAffected if SSO is enabled within the web portal configuration
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Inspect for bookmarked SSO portal pagesReview user bookmarked URLs for the SSL-VPN web portal. Look for URLs containing '/sslvpn/' or '/remote/saml?' patterns that indicate SSO-enabled accessAffected if Users have created bookmarks pointing to SSO-enabled portal pages
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Examine client-side JavaScript for credential exposureWhen accessing a bookmarked SSO portal page, use browser developer tools to inspect the JavaScript files loaded. Search for login credentials, tokens, or authentication parameters embedded in client-side scriptsAffected if Credentials or sensitive authentication data are visible in JavaScript files served to the client
A system is affected if it runs FortiOS 6.0.0 or below and has users who have bookmarked SSO-enabled web portal pages, resulting in credentials being exposed in client-side JavaScript.
Generated from the published advisory. Verify against your own configuration.
Remediation Closing itWhat it takes to close this. Where a vendor fix exists we point at it; where none exists we say so plainly, and can build one. Effort estimates are scoped from the advisory, not from your codebase.
From vendor dataUpgrade FortiOS to version 6.0.1 or later to remediate this vulnerability. Until the upgrade is applied, advise users to avoid bookmarking SSO-enabled web portal pages.
Fix this in Fortios
Scoped from the published advisory
- Consultation2.0 h
- Implementation4.0 h
- Testing3.0 h
- Review / QA2.0 h
An estimate, not a bill — we confirm scope with you before any work starts. Need it this week? Rush from $3,088.
Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2018-9185 — or any other known-vulnerable package — straight from your lock files. Free and open source; it runs locally and uploads nothing.
References Go to the primary sourcePrimary sources — vendor advisories, patches and trackers. Where our summary and a reference disagree, the reference wins.
Primary sourcesPractitioner notes
ContributedPeer-ranked notes from engineers who’ve handled CVE-2018-9185 in production — separate from our analysis above.
The advisory tells you what broke. It rarely tells you what actually worked. If you’ve dealt with this one, that detail is what the next engineer is searching for.
- The version that genuinely resolved it — not the one the vendor claimed
- A config change or rule that shut the vector down
- A gotcha in the upgrade path that cost you an afternoon
No notes yet
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- Verified mitigations, workarounds, and config changes
- Version or environment caveats, and links to real fixes
- No weaponised exploit code, or anything meant to cause harm
- No spam, self-promotion, credentials, or personal data