What is the CVSS score of CVE-2019-25321?

CVE-2019-25321 has a CVSS 3.1 base score of 9.8 (Critical). CVSS vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H. EPSS exploitation probability: 0.3%.

Which versions of Ftp Navigator are affected by CVE-2019-25321?

FTP Navigator 8.03 contains a critical remote code execution vulnerability (CVE-2019-25321) that allows attackers to gain complete system control without authentication.

Is there a public PoC exploit available for CVE-2019-25321?

Yes, a public proof-of-concept exploit is available for CVE-2019-25321. Prioritise patching immediately. EPSS: 0.3%.

How to fix or mitigate CVE-2019-25321?

Within 24 hours: Identify all systems running FTP Navigator 8.03 and assess network exposure; disable or isolate affected instances if possible. Within 7 days: Evaluate migration to patched versions or alternative FTP solutions; implement network segmentation to restrict access to FTP Navigator systems. Within 30 days: Complete replacement or upgrade of FTP Navigator; verify no unauthorized access occurred through log analysis.

Ftp Navigator CVE-2019-25321

CRITICAL

Stack-based Buffer Overflow (CWE-121)

2026-02-12 disclosure@vulncheck.com

RCE Buffer Overflow Stack Overflow Ftp Navigator

9.8

CVSS 3.1 · NVD

Severity by source

NVD PRIMARY

9.8 CRITICAL

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

Primary rating from NVD · only source for this CVE.

CVSS VectorNVD

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

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

High

Lifecycle Timeline

Analysis Generated

Mar 12, 2026 - 22:02 vuln.today

PoC Detected

Mar 03, 2026 - 14:48 vuln.today

Public exploit code

CVE Published

Feb 12, 2026 - 23:16 nvd

CRITICAL 9.8

DescriptionCVE.org

FTP Navigator 8.03 contains a stack overflow vulnerability that allows attackers to execute arbitrary code by overwriting Structured Exception Handler (SEH) registers. Attackers can craft a malicious payload that triggers a buffer overflow when pasted into the Custom Command textbox, enabling remote code execution and launching the calculator as proof of concept.