CVE-2018-20658
The server in Core FTP 2.0 build 653 on 32-bit platforms allows remote attackers to cause a denial of service (daemon crash) via a crafted XRMD command.
Does this matter?
A public exploit is published in Exploit-DB and the impact is high, while EPSS rates exploitation at 8.5%. Anyone can run this; patch or mitigate before the next change window and check exposed instances for signs of use.
Description
The server in Core FTP 2.0 build 653 on 32-bit platforms allows remote attackers to cause a denial of service (daemon crash) via a crafted XRMD command.
- CVSS 3.0
- 7.5 HIGHCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
- EPSS
- 8.49% probability · 95th percentile
- Public exploits
- 1 in Exploit-DB · first 26 July 2018
- CISA KEV
- Not listed
- Weakness
- CWE-20
- Affected
- coreftp/core ftp
- Source
- cve@mitre.org
EPSS moved from 7.0% on 21 September 2026 to 8.5% on 27 October 2026. The dashed line is the ten per cent mark our analysts treat as “patch before the next change window”.
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://coreftp.com/forums/viewtopic.php?f=15&t=4022509Third Party Advisory
- https://www.exploit-db.com/exploits/45091Exploit, Third Party Advisory, VDB Entry
- http://coreftp.com/forums/viewtopic.php?f=15&t=4022509Third Party Advisory
- https://www.exploit-db.com/exploits/45091Exploit, Third Party Advisory, VDB Entry
Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.