CVE-2018-4251
An issue was discovered in certain Apple products. macOS before 10.13.5 is affected. The issue...
An issue was discovered in certain Apple products. macOS before 10.13.5 is affected. The issue involves the "Firmware" component. It allows attackers to modify the EFI flash-memory region that a crafted app that has root access.
Attack profile
How easy it is to exploit
- Attack vector
- Local
- Complexity
- Low
- Privileges needed
- None
- User interaction
- Required
What an attacker can affect
- Confidentiality
- None
- Integrity
- High
- Availability
- None
Exploit likelihood
What each source reports
NVD Score used
An issue was discovered in certain Apple products. macOS before 10.13.5 is affected. The issue involves the "Firmware" component. It allows attackers to modify the EFI flash-memory region that a crafted app that has root access.
- Record
CVE-2018-4251- CVSS 3.0
- 5.5 Medium
CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N - CVSS 2.0
- 7.1 High
AV:N/AC:M/Au:N/C:N/I:C/A:N - Weakness
- CWE-732
- Updated
- 2026-11-02
CVE List No score
An issue was discovered in certain Apple products. macOS before 10.13.5 is affected. The issue involves the "Firmware" component. It allows attackers to modify the EFI flash-memory region that a crafted app that has root access.
- Record
CVE-2018-4251- Updated
- 2026-11-02
EUVDEUVD-2018-16037 No score
An issue was discovered in certain Apple products. macOS before 10.13.5 is affected. The issue involves the "Firmware" component. It allows attackers to modify the EFI flash-memory region that a crafted app that has root access.
- Record
EUVD-2018-16037- Updated
- 2026-11-03
GitHub AdvisoriesGHSA-6qh2-3h42-p5xv
An issue was discovered in certain Apple products. macOS before 10.13.5 is affected. The issue...
An issue was discovered in certain Apple products. macOS before 10.13.5 is affected. The issue involves the "Firmware" component. It allows attackers to modify the EFI flash-memory region that a crafted app that has root access.
- Record
GHSA-6qh2-3h42-p5xv- CVSS 3.0
- 5.5 Medium
CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N - Weakness
- CWE-732
- Updated
- 2026-11-02
Affected products
History
| Recorded | Changed | Sources |
|---|---|---|
| aliases | EUVD | |
| first indexed | CVE List, GitHub Advisories, NVD |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2018-4251 is a medium vulnerability (CVSS 5.5) in Apple Mac Os X, published June 8, 2018. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 1.19%, the 68th percentile. No source names a fixed version.