CVSS 9.83 sources verified·1 min read
By Lyrie Threat Intelligence·6/17/2026
CRITICAL: CVE-2021-3378 (CVSS 9.8) — fortilogger fortilogger
CVE: CVE-2021-3378
CVSS: 9.8 (3.1) — CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Severity: CRITICAL
Status: Critical advisory
Affected
- fortilogger fortilogger
Summary
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.
Verified Sources
References
- http://packetstormsecurity.com/files/161601/FortiLogger-4.4.2.2-Arbitrary-File-Upload.html
- http://packetstormsecurity.com/files/161974/FortiLogger-Arbitrary-File-Upload.html
- https://github.com/erberkan/fortilogger_arbitrary_fileupload
- http://packetstormsecurity.com/files/161601/FortiLogger-4.4.2.2-Arbitrary-File-Upload.html
- http://packetstormsecurity.com/files/161974/FortiLogger-Arbitrary-File-Upload.html
- https://github.com/erberkan/fortilogger_arbitrary_fileupload
_Validated by the Lyrie Threat Intelligence Pipeline — 3 independent sources confirmed before publication. No speculation._
Lyrie Verdict
A vulnerability of this severity is exactly what Lyrie's anti-rogue-AI defense is built for: continuous, autonomous monitoring that doesn't wait for human reaction time.
Validated sources
- [1]NVD
- [2]GitHub Advisory
- [3]MITRE
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