What’s Vulnerable › Vulnerabilities

CVE-2019-25654: Core FTP/SFTP Server 1.2 Denial of Service via Buffer Overflow

• Severity: high (CVSS 7.5 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.7% probability of exploitation in the next 30 days
• Public exploit or detection template: yes
• Published: 2026-03-30 · updated 2026-10-27
• Weakness: CWE-787

Description

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.

Affected products

• Coreftp Core FTP: 1.2
• Coreftp Core FTP: v2-Build 673

References

• http://www.coreftp.com/
• http://www.coreftp.com/server/download/archive/CoreFTPServer589.42.exe
• https://www.exploit-db.com/exploits/46371
• https://www.vulncheck.com/advisories/core-ftp-sftp-server-denial-of-service-via-buffer-overflow

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