What is CVE-2019-18663?

CVE-2019-18663 is a critical-severity vulnerability in Isl Arp-Guard, classified under SQL Injection. CVSS score: 9.8/10. Published 2019-11-04.

How severe is CVE-2019-18663?

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

SQL Injection in Isl Arp-Guard

CVE-2019-18663

A SQL injection vulnerability in a /login/forgot1 POST request in ARP-GUARD 4.0.0-5 allows unauthenticated remote attackers to execute arbitrary SQL commands via the user_id parameter.

Vulnerability class: SQL Injection

Published 2019-11-04 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

EPSS exploit prediction

EPSS: 0.014 (72.1th percentile), scored 2026-10-04.

Low probability of exploitation in the next 30 days, but still tracked. 72nd percentile — 72.1% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.014 · newest: 0.014 · change: 0.000

Affected products

Isl Arp-Guard — versions 4.0.0-5

Weakness classification (CWE)

CWE-89 — SQL Injection

References

atomic111.github.io/article/arp-guard-sql-injection (Exploit, Third Party Advisory)

Frequently asked questions

What is CVE-2019-18663?: CVE-2019-18663 is a critical-severity vulnerability in Isl Arp-Guard, classified under SQL Injection. CVSS score: 9.8/10. Published 2019-11-04.
How severe is CVE-2019-18663?: Critical severity. CVSS v3 base score is 9.8 out of 10.