CVE-2021-3378
FortiLogger 4.4.2.2 is affected by Arbitrary File Upload by sending a "Content-Type: image/png"...
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.
Attack profile
How easy it is to exploit
- Attack vector
- Network
- Complexity
- Low
- Privileges needed
- None
- User interaction
- None
What an attacker can affect
- Confidentiality
- High
- Integrity
- High
- Availability
- High
Exploit likelihood
What each source reports
NVD Score used
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.
- Record
CVE-2021-3378- CVSS 3.1
- 9.8 Critical
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H - CVSS 2.0
- 7.5 High
AV:N/AC:L/Au:N/C:P/I:P/A:P - Weakness
- CWE-434
- Updated
- 2026-11-02
CVE ListNo score
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.
- Record
CVE-2021-3378- Updated
- 2026-11-02
EUVDEUVD-2021-26708No score
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.
- Record
EUVD-2021-26708- Updated
- 2026-11-03
GitHub AdvisoriesGHSA-2fh3-xg72-f7vxNo score
FortiLogger 4.4.2.2 is affected by Arbitrary File Upload by sending a "Content-Type: image/png"...
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.
- Record
GHSA-2fh3-xg72-f7vx- Weakness
- CWE-434
- Updated
- 2026-11-02
Affected products
Public exploits
Links only. Every CVE stores no exploit code.
| Source | Link | Date |
|---|---|---|
| Exploit-DB | FortiLogger 4.4.2.2 - Unauthenticated Arbitrary File Upload (Metasploit) | 2021-03-01 |
| Metasploit | FortiLogger Arbitrary File Upload Exploit | 2021-02-26 |
| Nuclei | FortiLogger 4.4.2.2 - Arbitrary File Upload | |
| PoC in GitHub | erberkan/fortilogger_arbitrary_fileupload | 2021-01-30 |
History
| Recorded | Changed | Sources |
|---|---|---|
| aliases | EUVD | |
| first indexed | CVE List, Exploit-DB, GitHub Advisories, Metasploit, Nuclei, NVD, PoC in GitHub |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2021-3378 is a critical vulnerability (CVSS 9.8) in Fortilogger, published February 1, 2021. Public exploit code exists. EPSS puts the chance of exploitation in the next 30 days at 97.5%, the 99th percentile. No source names a fixed version.