What is CVE-2018-3684?

CVE-2018-3684 is a high-severity vulnerability in Intel Quartus Ii, classified under Unquoted Search Path or Element. CVSS score: 7.8/10. Published 2018-07-10.

How severe is CVE-2018-3684?

High severity. CVSS v3 base score is 7.8 out of 10.

Vulnerability in Intel Quartus Ii

CVE-2018-3684

Unquoted service paths in Intel Quartus II in versions 11.0 - 15.0 allow a local attacker to potentially execute arbitrary code.

Published 2018-07-10 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 7.8 (High). Vector: CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.

EPSS exploit prediction

EPSS: 0.004 (26.5th percentile), scored 2026-10-01.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 27th percentile — 26.5% 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

Intel Quartus Ii
Intel Corporation Quartus Ii — versions 15.0

Weakness classification (CWE)

CWE-428 — Unquoted Search Path or Element

References

www.intel.com/content/www/us/en/security-center/advisory/intel-sa-00151.html (Vendor Advisory)

Frequently asked questions

What is CVE-2018-3684?: CVE-2018-3684 is a high-severity vulnerability in Intel Quartus Ii, classified under Unquoted Search Path or Element. CVSS score: 7.8/10. Published 2018-07-10.
How severe is CVE-2018-3684?: High severity. CVSS v3 base score is 7.8 out of 10.