CVE-2019-25686

HIGH

7.5

Description

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.

CVE Details

CVSS v3.1 Score7.5

SeverityHIGH

CVSS VectorCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Attack VectorNETWORK

ComplexityLOW

Privileges RequiredNONE

User InteractionNONE

Published4/5/2026

Last Modified4/5/2026

Sourcenvd

Honeypot Sightings0

Weaknesses (CWE)

CWE-306

References

http://coreftp.com/server/download/archive/CoreFTPServer653.exe(disclosure@vulncheck.com)

http://www.coreftp.com/(disclosure@vulncheck.com)

https://www.exploit-db.com/exploits/46532(disclosure@vulncheck.com)

https://www.vulncheck.com/advisories/core-ftp-build-653-pbsz-unauthenticated-denial-of-service(disclosure@vulncheck.com)

IOC Correlations

No correlations recorded

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