Coreftp: Security Vulnerabilities
Core FTP 2.0 build 653 contains a denial of service vulnerability in the PBSZ command that allows unauthenticated attackers to crash the service by sending a malformed command with an oversized buffer. Attackers can send a PBSZ command with a payload exceeding 211 bytes to trigger an access violation and crash the FTP server process.
CVSS Score
8.7
EPSS Score
0.005
Published
2026-04-05
Core FTP/SFTP Server 1.2 contains a buffer overflow vulnerability that allows attackers to crash the service by supplying an excessively long string in the User domain field. Attackers can paste a malicious payload containing 7000 bytes of data into the domain configuration to trigger an application crash and deny service.
CVSS Score
8.7
EPSS Score
0.007
Published
2026-03-30
Core FTP / SFTP Server v2 Build 725 was discovered to allow unauthenticated attackers to cause a Denial of Service (DoS) via a crafted packet through the SSH service.
CVSS Score
5.5
EPSS Score
0.009
Published
2022-02-17
CoreFTP Server before 727 allows directory traversal (for file creation) by an authenticated attacker via ../ in an HTTP PUT request.
CVSS Score
6.5
EPSS Score
0.054
Published
2022-01-10
Buffer overflow vulnerability in Core FTP Server v2 Build 697, via a crafted username.
CVSS Score
7.5
EPSS Score
0.011
Published
2021-04-05
Buffer overflow vulnerability in Core FTP Server v1.2 Build 583, via a crafted username.
CVSS Score
9.8
EPSS Score
0.013
Published
2021-04-05
Buffer overflow in Core FTP LE v2.2 allows local attackers to cause a denial or service (crash) via a long string in the Setup->Users->Username editbox.
CVSS Score
5.5
EPSS Score
0.003
Published
2021-04-02
An issue was discovered in the SFTP Server component in Core FTP 2.0 Build 674. Using the MDTM FTP command, a remote attacker can use a directory traversal technique (..\..\) to browse outside the root directory to determine the existence of a file on the operating system, and its last modified date.
CVSS Score
5.3
EPSS Score
0.145
Published
2019-03-22
An issue was discovered in the SFTP Server component in Core FTP 2.0 Build 674. A directory traversal vulnerability exists using the SIZE command along with a \..\..\ substring, allowing an attacker to enumerate file existence based on the returned information.
CVSS Score
5.3
EPSS Score
0.143
Published
2019-03-22
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 Score
7.5
EPSS Score
0.085
Published
2019-01-02
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