Buffer overflow in Xlightftpd Xlight
CVE-2019-25681
Xlight FTP Server 3.9.1 contains a structured exception handler (SEH) overwrite vulnerability that allows local attackers to crash the application and overwrite SEH pointers by supplying a crafted buffer string. Attackers can inject a 428-byte payload through the program execution field in virtual server configuration to trigger a buffer overflow that corrupts the SEH chain and enables potential code execution.
Vulnerability class: Buffer Overflow
EPSS: 0.002 (11.2th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 8.4 (High). Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.
Affected products
- Xlightftpd Xlight — versions 3.9.1
- Xlightftpd Xlight_ftp_server — versions 3.9.1
Weakness classification (CWE)
References
- disclosure@vulncheck.com (Exploit, VDB Entry, exploit)
- disclosure@vulncheck.com (Product, product)
- disclosure@vulncheck.com (Product, product)
- disclosure@vulncheck.com (Third Party Advisory, third-party-advisory)
Frequently asked questions
- What is CVE-2019-25681?
- CVE-2019-25681 is a high-severity vulnerability in Xlightftpd Xlight, classified under Out-of-bounds Write. CVSS score: 8.4/10. Published 2026-04-05.
- How severe is CVE-2019-25681?
- High severity. CVSS v3 base score is 8.4 out of 10.