PT-2026-30494 · Core Ftp · Core Ftp

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

NVD

CVSS v3.1

7.5

High

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

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.

Exploit

Fix

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
• http://coreftp.com · Note
• http://coreftp.com/server/download/archive/CoreFTPServer653.exe · Note
• https://vulncheck.com/advisories/core-ftp-build-653-pbsz-unauthenticated-denial-of-service · Note