High severity · published Feb 12, 2026
CVE-2019-25329
FTP Navigator 8.03 - 'Custom Command' Denial of Service (SEH)
7.5
CVSS
0.5%
EPSS
No
On KEV
Description
FTP Navigator 8.03 contains a denial of service vulnerability that allows attackers to crash the application by overwriting Structured Exception Handler (SEH) with malicious input. Attackers can generate a payload of 4108 'A' characters followed by 4 'B' characters and 40 'C' characters to trigger a program crash when pasted into the custom command input.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
None
Integrity
None
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.5% · higher than 43% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
FN
FTP Navigator · Internet-Soft
8.03 · source: vendor, NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2019-25329
CVE.org
https://www.cve.org/CVERecord?id=CVE-2019-25329
Product
http://www.internet-soft.com/
Exploit
https://www.exploit-db.com/exploits/47794
Third Party Advisory
https://www.vulncheck.com/advisories/ftp-navigator-custom-command-denial-of-service-seh
More from FTP Navigator
9.8
CVE-2019-25321
FTP Navigator 8.03 - Stack Overflow (SEH)