CVE-2021-27964
SonLogger before 6.4.1 is affected by Unauthenticated Arbitrary File Upload.
Does this matter?
EPSS puts the probability of exploitation in the next 30 days at 47.5%, higher than 99% of all known CVEs. Patch or mitigate before the next change window.
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.
- CVSS 3.1
- 9.8 CRITICALCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
- EPSS
- 47.52% probability · 99th percentile
- Public exploits
- 1 in Exploit-DB · verified · first 15 March 2021
- CISA KEV
- Not listed
- Weakness
- CWE-434
- Affected
- sfcyazilim/sonlogger
- Source
- cve@mitre.org
EPSS 47.5% since 26 October 2026; no change recorded yet. The dashed line is the ten per cent mark our analysts treat as “patch before the next change window”. Points are recorded when the score first appears and whenever it moves by a percentage point or more.
Public exploits (1)
Entries in Exploit-DB that cite this CVE. Links go to the Exploit-DB page and to the file in the public repository; nothing is hosted here. A verified tick means the Exploit-DB team confirmed the exploit works against the stated version.
References
- http://packetstormsecurity.com/files/161793/SonLogger-4.2.3.3-Shell-Upload.htmlExploit, Third Party Advisory, VDB Entry
- https://github.com/erberkan/SonLogger-vulnsExploit, Third Party Advisory
- https://www.sonlogger.com/releasenotesRelease Notes, Vendor Advisory
- http://packetstormsecurity.com/files/161793/SonLogger-4.2.3.3-Shell-Upload.htmlExploit, Third Party Advisory, VDB Entry
- https://github.com/erberkan/SonLogger-vulnsExploit, Third Party Advisory
- https://www.sonlogger.com/releasenotesRelease Notes, Vendor Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.