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CVE-2021-27964

SonLogger before 6.4.1 is affected by Unauthenticated Arbitrary File Upload. An attacker can send a POST request to...

Basic Information

CVE State
PUBLISHED
Reserved Date
March 05, 2021
Published Date
March 05, 2021
Last Updated
August 03, 2024
Vendor
SonLogger
Product
SonLogger
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.
Tags
nuclei_scanner

CVSS Scores

CVSS v3.1

9.8 - CRITICAL

Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

CVSS v2.0

7.5

Vector: AV:N/AC:L/Au:N/C:P/I:P/A:P

EPSS Score

Score
64.87% (Percentile: 98.34%) as of 2025-06-13

Exploit Status

Exploited in the Wild
Yes (2025-06-05 00:00:00 UTC) Source

References

https://github.com/erberkan/SonLogger-vulns https://www.sonlogger.com/releasenotes http://packetstormsecurity.com/files/161793/SonLogger-4.2.3.3-Shell-Upload.html

Known Exploited Vulnerability Information

Source Added Date
The Shadowserver (via CIRCL) 2025-06-06 12:00:43 UTC

Scanner Integrations

Scanner URL Date Detected
Nuclei https://github.com/projectdiscovery/nuclei-templates/blob/main/http/cves/2021/CVE-2021-27964.yaml 2025-06-12 12:30:14 UTC

Timeline

  • CVE ID Reserved

  • CVE Published to Public

  • Added to KEVIntel

  • Detected by Nuclei