What is CVE-2017-1000218?

CVE-2017-1000218 is a critical-severity vulnerability in Hfiref0x Lightftp, classified under Improper Restriction of Operations within the Bounds of a Memory Buffer. CVSS score: 9.8/10. Published 2017-11-17.

How severe is CVE-2017-1000218?

Critical severity. CVSS v3 base score is 9.8 out of 10.

Buffer overflow in Hfiref0x Lightftp

CVE-2017-1000218

LightFTP version 1.1 is vulnerable to a buffer overflow in the "writelogentry" function resulting a denial of services or a remote code execution.

Vulnerability class: Buffer Overflow

Published 2017-11-17 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

EPSS exploit prediction

EPSS: 0.034 (88.8th percentile), scored 2026-11-04.

Low probability of exploitation in the next 30 days, but still tracked. 89th percentile — 88.8% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.034 · newest: 0.034 · change: 0.000

Affected products

Hfiref0x Lightftp — versions 1.1

Weakness classification (CWE)

CWE-119 — Improper Restriction of Operations within the Bounds of a Memory Buffer

References

github.com/hfiref0x/LightFTP/issues/5 (Exploit, Third Party Advisory)

Frequently asked questions

What is CVE-2017-1000218?: CVE-2017-1000218 is a critical-severity vulnerability in Hfiref0x Lightftp, classified under Improper Restriction of Operations within the Bounds of a Memory Buffer. CVSS score: 9.8/10. Published 2017-11-17.
How severe is CVE-2017-1000218?: Critical severity. CVSS v3 base score is 9.8 out of 10.