How severe is CVE-2018-19321?

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

Is CVE-2018-19321 known to be exploited?

Yes. CVE-2018-19321 is listed in the CISA Known Exploited Vulnerabilities catalog (added 2022-10-24), indicating it is being actively exploited. 5 public proof-of-concept repositories are indexed.

Vulnerability in Gigabyte Aorus Graphics Engine

CVE-2018-19321

The GPCIDrv and GDrv low-level drivers in GIGABYTE APP Center v1.05.21 and earlier, AORUS GRAPHICS ENGINE before 1.57, XTREME GAMING ENGINE before 1.26, and OC GURU II v2.08 expose functionality to read and write arbitrary physical memory. This could be leveraged by a local attacker to elevate privileges.

Published 2018-12-21 · last modified 2026-08-13.

CVSS v3 metric

CVSS v3 base score 7.8 (High). Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.

EPSS exploit prediction

EPSS: 0.037 (89.6th percentile), scored 2026-10-19.

Low probability of exploitation in the next 30 days, but still tracked. 90th percentile — 89.6% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.037 · newest: 0.037 · change: +0.000

Affected products

CISA KEV (Known Exploited Vulnerabilities)

This CVE is on the CISA KEV catalog, added on 2022-10-24. CISA KEV inclusion means CISA has confirmed in-the-wild exploitation; US federal agencies are required to remediate within a published due date.

BOD 22-01 due date: 2022-11-14.

Required action: Apply updates per vendor instructions.

Known ransomware campaign use: yes.

Public proof-of-concept exploits

References

seclists.org/fulldisclosure/2018/Dec/39 (mailing-list, Exploit, Mailing List, Third Party Advisory)
www.secureauth.com/labs/advisories/gigabyte-drivers-elevation-privilege-vulnera… (Exploit, Third Party Advisory, Broken Link)
www.securityfocus.com/bid/106252 (VDB Entry, Third Party Advisory, vdb-entry, Broken Link)
www.gigabyte.com/Support/Security/1801 (Vendor Advisory)
134c704f-9b21-4f2e-91b3-4a467353bcc0 (US Government Resource)

Frequently asked questions

What is CVE-2018-19321?: CVE-2018-19321 is a high-severity vulnerability in Gigabyte Aorus Graphics Engine. CVSS score: 7.8/10. Published 2018-12-21.
How severe is CVE-2018-19321?: High severity. CVSS v3 base score is 7.8 out of 10.
Is CVE-2018-19321 known to be exploited?: Yes. CVE-2018-19321 is listed in the CISA Known Exploited Vulnerabilities catalog (added 2022-10-24), indicating it is being actively exploited. 5 public proof-of-concept repositories are indexed.