CVE-2021-27964 EXPLOIT
9.8
CRITICAL · CVSS 3.1 · EPSS 47.5% (pctl 99)
Patch early
A public exploit exists.
Description
SonLogger before 6.4.1 is affected by Unauthenticated Arbitrary File Upload. An attacker can send a POST request to /Config/SaveUploadedHotspotLogoFile without any authentication or session header. There is no check for the file extension or content of the uploaded file.
Scoring
| CVSS | 9.8 (CRITICAL, v3.1) |
|---|---|
| Vector | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |
| EPSS | 47.52% — more likely to be exploited than 99% of all CVEs |
| Weakness | CWE-434 |
| On CISA KEV | no |
| Public exploit | yes |
| Published | 2021-03-05 |
| Last modified | 2026-06-17 |
Affected (1)
| Vendor | Product |
|---|---|
| sfcyazilim | sonlogger |
Public exploits
| Source | Title | Date |
|---|---|---|
| exploit-db | SonLogger 4.2.3.3 - Unauthenticated Arbitrary File Upload (Metasploit) | 2021-03-15 |
References
- http://packetstormsecurity.com/files/161793/SonLogger-4.2.3.3-Shell-Upload.html
- https://github.com/erberkan/SonLogger-vulns
- https://www.sonlogger.com/releasenotes
- http://packetstormsecurity.com/files/161793/SonLogger-4.2.3.3-Shell-Upload.html
- https://github.com/erberkan/SonLogger-vulns
- https://www.sonlogger.com/releasenotes
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