CVE-2018-19321
CVE-2018-19321 is a security flaw in GIGABYTE products. Someone who already has a foothold can use GIGABYTE products to take full control of the machine. The US Cybersecurity and Infrastructure Security Agency (CISA) added it to its catalog of flaws known to be used in attacks on 24 Oct 2022, and says ransomware gangs have used it.[1]
GIGABYTE products is business software or equipment. Most families won’t have it, but attackers break into it to get inside companies, and from there to what those companies hold about their customers, patients and staff. GIGABYTE has published a fix or advice.
Description
CISA calls it a privilege escalation in GIGABYTE Multiple Products. In its words: “The GPCIDrv and GDrv low-level drivers in GIGABYTE App Center, AORUS Graphics Engine, XTREME Gaming Engine, and OC GURU II expose functionality to read and write arbitrary physical memory. This could be leveraged by a local attacker to elevate privileges.”[1]
The CVE record adds: “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.”[2]
It scores 7.8 out of 10 on the Common Vulnerability Scoring System, which rates it high, scored by NVD using CVSS 3.1.[2]
Affected versions
NVD’s record doesn’t list version ranges for it; GIGABYTE’s advisory has them[3]. CISA names the product as GIGABYTE Multiple Products.
Most families won’t have GIGABYTE products; it’s for whoever looks after IT at work.
Exploitation
CISA added it to its catalog of known exploited vulnerabilities on 24 Oct 2022, 1,403 days after it was made public. CISA lists a flaw only when it has reliable evidence of it being exploited, and gave US federal agencies until 14 Nov 2022 to fix it.[1] CISA says ransomware gangs have used it.
FIRST’s Exploit Prediction Scoring System, which estimates how likely a flaw is to be used in attacks in the next 30 days from what it sees across the internet, puts it at 4%. That’s in the top 11% of the flaws it scores.[4]
CISA assesses it as not automatable: each attack takes some work.
CISA doesn’t say who was attacked, or how.
Fix
GIGABYTE has published a fix or advice.[3] CISA’s required action: “Apply updates per vendor instructions.”[1]
- Check whether you use it.GIGABYTE products is business software or equipment, so most families won’t have it. If you run a business, or work from home on company equipment, ask whoever looks after your IT.
- Send this page to your IT person.Ask them to confirm it’s fixed, or not in use. CISA gave US government agencies until 14 Nov 2022 to fix it.
- If it can’t be fixed, take it offline.CISA’s advice when there’s no fix is to stop using the product, or take it off the internet, until there is one.
You can’t fix someone else’s server, but you can watch for what follows a break-in like this: a breach notice, a password reset you didn’t ask for, or a scam message that knows things it shouldn’t. HARD watches for those for you and your family.
Timeline
| Date | Event |
|---|---|
| The flaw is made public in the National Vulnerability Database, with a severity score of 7.8.[2] | |
| CISA adds it to its catalog of flaws known to be used in attacks, noting that ransomware gangs have used it.[1] | |
| CISA’s deadline for US government agencies to fix it.[1] | |
| FIRST puts the odds of it being used in attacks in the next 30 days at 4%.[4] |
See also
Other GIGABYTE products flaws
- CVE-2018-19323: privilege escalation ·
- CVE-2018-19322: code execution ·
- CVE-2018-19320: unspecified ·
Similar flaws
- CVE-2026-111357, Ivanti Connect Secure: missing authentication for critical function ·
- CVE-2026-97229, GitLab Community Edition and Enterprise Edition: integer overflow or wraparound ·
- CVE-2026-76418, Cisco Secure Firewall ASA Software and Cisco Secure FTD Software: unchecked return value to NULL pointer dereference ·
- CVE-2026-48356, Adobe Commerce and Magento: unrestricted upload of file with dangerous type ·
- CVE-2026-111497, Google Brotli: unchecked return value ·
Added the same day
- CVE-2020-3433, Cisco AnyConnect Secure: mobility client for windows DLL hijacking ·
- CVE-2020-3153, Cisco AnyConnect Secure: mobility client for windows uncontrolled search path ·
- CVE-2018-19323, GIGABYTE products: privilege escalation ·
- CVE-2018-19322, GIGABYTE products: code execution ·
- CVE-2018-19320, GIGABYTE products: unspecified ·
Every GIGABYTE flaw on CISA’s list · Everything added in October 2022
References
- ^ Cybersecurity and Infrastructure Security Agency. “GIGABYTE Multiple Products Privilege Escalation Vulnerability”. Known Exploited Vulnerabilities Catalog, added 24 Oct 2022.
- ^ National Institute of Standards and Technology. “CVE-2018-19321 Detail”. National Vulnerability Database, published 21 Dec 2018.
- ^ GIGABYTE. Advisories and fixes: gigabyte.com.
- ^ FIRST. “Exploit Prediction Scoring System”. EPSS 0.037, percentile 89.7, 31 Oct 2026.
- CVE Program. “CVE-2018-19321”. The official CVE record.
This article is built from CISA’s catalog (version 2026.10.30), NVD’s record and FIRST’s scores, kept in HARD’s database and checked every morning. The plain English is HARD’s.