What is CVE-2020-12818?

CVE-2020-12818 is a medium-severity vulnerability in Fortinet Fortigate 1000d. CVSS score: 5.3/10. Published 2020-09-24.

How severe is CVE-2020-12818?

Medium severity. CVSS v3 base score is 5.3 out of 10.

Vulnerability in Fortinet Fortigate 1000d

CVE-2020-12818

An insufficient logging vulnerability in FortiGate before 6.4.1 may allow the traffic from an unauthenticated attacker to Fortinet owned IP addresses to go unnoticed.

Published 2020-09-24 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 5.3 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N.

EPSS exploit prediction

EPSS: 0.009 (58.1th percentile), scored 2026-09-29.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 58th percentile — 58.1% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.009 · newest: 0.009 · change: 0.000

Affected products

References

fortiguard.com/advisory/FG-IR-20-033 (Vendor Advisory)
www.fortiguard.com/psirt/FG-IR-20-033 (Vendor Advisory)

Frequently asked questions

What is CVE-2020-12818?: CVE-2020-12818 is a medium-severity vulnerability in Fortinet Fortigate 1000d. CVSS score: 5.3/10. Published 2020-09-24.
How severe is CVE-2020-12818?: Medium severity. CVSS v3 base score is 5.3 out of 10.