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.
Published: 2026-04-05
Score: 8.7 High
EPSS: n/a
KEV: No
Impact: n/a
Action: n/a
AI Analysis

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Remediation

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Tracking

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History

Sun, 05 Apr 2026 20:45:00 +0000

Type Values Removed Values Added
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.
Title Core FTP 2.0 build 653 PBSZ Unauthenticated Denial of Service
First Time appeared Coreftp
Coreftp core Ftp
Weaknesses CWE-306
CPEs cpe:2.3:a:coreftp:core_ftp:2.0:build_653:*:*:*:*:*:*
Vendors & Products Coreftp
Coreftp core Ftp
References
Metrics cvssV3_1

{'score': 7.5, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H'}

cvssV4_0

{'score': 8.7, 'vector': 'CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N'}

Subscriptions

Coreftp Core Ftp
cve-icon MITRE

Status: PUBLISHED

Assigner: VulnCheck

Published:

Updated: 2026-04-05T20:45:35.338Z

Reserved: 2026-04-05T15:24:05.668Z

Link: CVE-2019-25686

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Received

Published: 2026-04-05T21:16:47.310

Modified: 2026-04-05T21:16:47.310

Link: CVE-2019-25686

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

No data.

Weaknesses