CVE-2021-3378
CRITICALCVSS 9.8/10EPSS 97.51%
Last modified
CVE-2021-3378 is a critical-severity vulnerability rated 9.8/10 on the CVSS scale. FortiLogger 4.4.2.2 is affected by Arbitrary File Upload by sending a "Content-Type: image/png" header to Config/SaveUploadedHotspotLogoFile and then visiting Assets/temp/hotspot/img/logohotspot.asp.. EPSS estimates a 97.51% chance of exploitation in the next 30 days.
Description
FortiLogger 4.4.2.2 is affected by Arbitrary File Upload by sending a "Content-Type: image/png" header to Config/SaveUploadedHotspotLogoFile and then visiting Assets/temp/hotspot/img/logohotspot.asp.
Metrics
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Weakness Enumeration
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Fortilogger | Fortilogger | < 5.2.0 |
References
- http://packetstormsecurity.com/files/161601/FortiLogger-4.4.2.2-Arbitrary-File-Upload.htmlExploit, Third Party Advisory, VDB Entry
- http://packetstormsecurity.com/files/161974/FortiLogger-Arbitrary-File-Upload.htmlExploit, Third Party Advisory, VDB Entry
- https://github.com/erberkan/fortilogger_arbitrary_fileuploadExploit, Third Party Advisory
- http://packetstormsecurity.com/files/161601/FortiLogger-4.4.2.2-Arbitrary-File-Upload.htmlExploit, Third Party Advisory, VDB Entry
- http://packetstormsecurity.com/files/161974/FortiLogger-Arbitrary-File-Upload.htmlExploit, Third Party Advisory, VDB Entry
- https://github.com/erberkan/fortilogger_arbitrary_fileuploadExploit, Third Party Advisory
Timeline
- Published
- Last Modified
- Status
- Modified
Frequently Asked Questions
What is CVE-2021-3378?
FortiLogger 4.4.2.2 is affected by Arbitrary File Upload by sending a "Content-Type: image/png" header to Config/SaveUploadedHotspotLogoFile and then visiting Assets/temp/hotspot/img/logohotspot.asp.
How severe is CVE-2021-3378?
CVE-2021-3378 has a CVSS score of 9.8/10 (CRITICAL severity). The EPSS model estimates a 97.51% probability of exploitation in the next 30 days.
How do I fix CVE-2021-3378?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.
How Strix Helps
- How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
- Autonomous PentestingAI agents that find and validate exploitable vulnerabilities like this one across your applications.
- PR ReviewsPentest every pull request so vulnerable code is caught before it ships to production.
- AI Penetration TestingHow AI-driven penetration testing continuously covers your attack surface.
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Are you affected by CVE-2021-3378?
Run a free Strix scan to check your systems for this vulnerability.
Scan your code nowSource: NVD / NIST