Security readout for executives and security teams
Plain-English summary
CVE-2018-19321 affects GIGABYTE utility drivers that can let a user already on a Windows system gain higher privileges. CISA lists it as known exploited, so this is not just theoretical. The main business risk is attackers turning limited access into full control on endpoints running the affected GIGABYTE software.
Executive priority
Prioritize remediation in normal vulnerability management cycles, with faster action for sensitive endpoints. KEV status raises urgency because exploitation is documented, but the local attack requirement means exposure depends on whether attackers can first gain user-level access.
Technical view
GPCIDrv and GDrv low-level drivers expose arbitrary physical memory read/write. A local attacker with low privileges can abuse this to elevate privileges. Affected software includes 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.
Likely exposure
Exposure is most likely on Windows endpoints, workstations, or gaming/engineering systems with the listed GIGABYTE utilities installed. The vulnerability requires local access, so it is most relevant after phishing, malware execution, or compromised user credentials.
Exploitation context
CISA KEV lists CVE-2018-19321 as known exploited. Public sources support local privilege escalation, not remote unauthenticated compromise. Treat affected systems as useful attacker stepping stones for persistence, credential access, or endpoint security bypass.
Researcher notes
The source bundle does not provide exploit details or CWE mapping. Analysis should focus on driver presence, utility versions, and local privilege escalation paths. Avoid assuming exposure on systems without the named GIGABYTE software or drivers.
Mitigation direction
- Identify systems running the affected GIGABYTE utilities.
- Update affected software according to GIGABYTE security guidance.
- Remove unneeded GIGABYTE utilities and associated low-level drivers.
- Prioritize remediation on systems with broad user access or sensitive data.
- Monitor CISA KEV and vendor guidance for updated remediation instructions.
Validation and detection
- Inventory installed versions of GIGABYTE APP Center and related utilities.
- Check whether GPCIDrv or GDrv drivers are present or loaded.
- Compare detected versions against the affected version ranges.
- Confirm updated or removed software no longer installs vulnerable drivers.
- Review endpoint telemetry for suspicious local privilege escalation activity.
Public sources used
Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.
Conservative CVE-to-ATT&CK context
These mappings and lookup hints may be relevant to the vulnerability behavior, CWE, affected product, or exposure path. Glexia-inferred context is not an official MITRE, ATT&CK, CWE, or CVE Program mapping.
ATT&CK lookup starting points
Use these exact CWE pages and searches to review the Glexia ATT&CK library from this CVE's weakness and description context.
CVE-2018-19321 mapping review
Open the CVE-to-ATT&CK bridge for reviewed, inferred, or future official mappings tied to this CVE.
Open ATT&CK lookup- Severity
- High
- CVSS
- 7.8 (3.1)
- Known Exploited
- Yes
- Published
Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
CNA and ADP enrichment extracted from CVE v5
These fields come from the CVE record and ADP containers, not from Glexia's Take. They preserve time-varying source decisions such as CISA SSVC, KEV status, CVSS metrics, and provider references.
CISA KEV status
SSVC decision data
CVSS vector scores
1 official scoreWe collect every scored CVSS vector available in the official CNA and ADP containers. When more than one version is present, the table keeps the source vectors side by side instead of collapsing them into the highest score.
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H1.85.9CISA-ADPVulnerability scoring details
Base CVSS 3.1 score
7.8HighVector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Vulnerability timeline
Timeline events are normalized from CVE metadata, CNA source timelines, ADP timelines, and KEV metadata when present.
- CVE reservedCVE Program
The CVE ID was reserved by the assigning CNA.
- CVE publishedCVE Program
The CVE record was published.
- Added to KEVCISA-ADP
CISA Known Exploited Vulnerabilities metadata lists this CVE as known exploited.
- ADP timelineCISA-ADP
CVE-2018-19321 added to CISA KEV
- CVE updatedCVE Program
The CVE record metadata indicates this as the latest update time.
ADP provider summaries
- 2022-10-24T00:00:00.000Z: CVE-2018-19321 added to CISA KEV
Source materials
- CVE List V5 sourceCVE List V5
- https://www.secureauth.com/labs/advisories/gigabyte-drivers-elevation-privilege-vulnerabilitiesCVE reference, mitre · x_refsource_MISC
- https://www.gigabyte.com/Support/Security/1801CVE reference, mitre · x_refsource_CONFIRM
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2018-19321CVE reference, CISA-ADP · government-resource
Products and packages named in the record
CWE details
CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.