PT-2026-30494 · Core Ftp · Core Ftp

Hodorsec · CVE-2019-25686 · Published 2026-04-05 · Updated 2026-04-05

Positive Technologies (AI Summary)

CVSS v3.1

7.5

High

Base vector

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

Name of the Vulnerable Software and Affected Versions Core FTP version 2.0 build 653

Description A denial of service issue exists in the PBSZ command. Unauthenticated attackers can crash the FTP server process by sending a malformed PBSZ command containing a payload larger than 211 bytes, which triggers an access violation.

Recommendations At the moment, there is no information about a newer version that contains a fix for this vulnerability.

Exploit

Missing Authentication

Weakness Enumeration

CWE-306

Related Identifiers

CVE-2019-25686

Affected Products

Core Ftp

References · 5

• 🔥 https://exploit-db.com/exploits/46532 · Exploit
• https://nvd.nist.gov/vuln/detail/CVE-2019-25686 · Security Note
• https://vulncheck.com/advisories/core-ftp-build-653-pbsz-unauthenticated-denial-of-service · Note
• http://coreftp.com/server/download/archive/CoreFTPServer653.exe · Note
• http://coreftp.com · Note