FortiwanApplication · Fortinet
CVE-2023-44252
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 · unedited** UNSUPPORTED WHEN ASSIGNED **An improper authentication vulnerability [CWE-287] in Fortinet FortiWAN version 5.2.0 through 5.2.1 and version 5.1.1 through 5.1.2 may allow an authenticated attacker to escalate his privileges via HTTP or HTTPs requests with crafted JWT token values.
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 confidenceFortiWAN versions 5.2.0-5.2.1 and 5.1.1-5.1.2 contain an improper authentication vulnerability (CWE-287) allowing authenticated attackers to escalate privileges by sending HTTP/HTTPS requests with crafted JWT token values.
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
FortiwanApplication
= 5.1.1= 5.1.2= 5.2.0= 5.2.1CVSS 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
- Low
- Privileges
- Low
- User interaction
- None
- Scope
- Unchanged
- Confidentiality
- High
- Integrity
- High
- Availability
- High
CVSS:3.1/AV:N/AC:L/PR:L/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 FortiWAN versionLocate the installed FortiWAN version using the system management interface or CLI command (such as 'get system status' or similar version display command). Compare this version against the affected ranges: 5.1.1, 5.1.2, 5.2.0, and 5.2.1.Affected if The installed version matches any of these four versions exactly.
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Confirm web administrative interface exposureDetermine if the FortiWAN web UI (HTTP/HTTPS ports) is accessible from network segments outside the trusted administrative network.Affected if The web interface is exposed to untrusted networks and the vulnerable version is installed.
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Review access logs for JWT token anomaliesInspect FortiWAN authentication and access logs for requests containing unusual or manipulated JWT token values, particularly those involving privilege escalation attempts.Affected if Log entries show JWT tokens with unexpected claims, altered values, or patterns indicative of manipulation.
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Audit for unauthorized privilege escalationExamine administrative audit logs and user account activity for instances where standard users or limited-role accounts suddenly acquired administrative privileges.Affected if Standard or limited accounts show administrative actions performed without corresponding role changes in the user database.
A user is affected if FortiWAN version 5.1.1, 5.1.2, 5.2.0, or 5.2.1 is installed AND the web administrative interface is exposed to network segments where attackers could send crafted JWT requests.
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 FortiWAN to a patched version as provided by Fortinet; if no patch is available, consider compensating controls such as restricting administrative access to trusted networks and monitoring for suspicious JWT manipulation in access logs.
Fix this in Fortiwan
Scoped from the published advisory
- Consultation4.0 h
- Implementation8.0 h
- Testing4.0 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 $5,120.
Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2023-44252 — 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-2023-44252 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
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