Buffer overflow in Xlightftpd Xlight FTP Server
CVE-2023-53886
Xlight FTP Server 3.9.3.6 contains a stack buffer overflow vulnerability in the 'Execute Program' configuration that allows attackers to crash the application. Attackers can trigger the vulnerability by inserting 294 characters into the program execution configuration, causing a denial of service condition.
Vulnerability class: Buffer Overflow
Published · last modified .
CVSS v3 metric
CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.
EPSS exploit prediction
EPSS: 0.004 (34.6th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 35th percentile — 34.6% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.004 · newest: 0.004 · change: +0.000
Affected products
- Xlightftpd Xlight FTP Server — versions 3.9.3.6
- Xlightftpd Xlight FTP Server — versions 3.9.3.6
Weakness classification (CWE)
References
- www.exploit-db.com/exploits/51665 (Exploit, Third Party Advisory, exploit)
- www.xlightftpd.com/ (product, Vendor Advisory)
- www.vulncheck.com/advisories/xlight-ftp-server-stack-buffer-overflow-vulnerabil… (Third Party Advisory, third-party-advisory)
Frequently asked questions
- What is CVE-2023-53886?
- CVE-2023-53886 is a high-severity vulnerability in Xlightftpd Xlight FTP Server, classified under Stack-based Buffer Overflow. CVSS score: 7.5/10. Published 2025-12-15.
- How severe is CVE-2023-53886?
- High severity. CVSS v3 base score is 7.5 out of 10.