7.1

CVE-2018-4251: apple mac_os_x

CVSS: 7.1v2.0HighModified
Published 08-06-2018Last modified 05-08-2024
Open JSON

Vulnerability summary

CVE-2018-4251 is a high (CVSS 7.1) vulnerability in apple mac_os_x. EPSS estimates a 1.19% chance of exploitation in the next 30 days, higher than 67.6% of scored vulnerabilities.

Overall risk
29/100
0100
Medium · default modelHow is this calculated?
CVSS score
7.1/10
010
High · v2.0 (NVD)
EPSS score
1.19%
0%100%
Low · -0.64 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded

Timeline

  1. 08-06-2018
    PublishedVulnerability first disclosed.
  2. 05-08-2024
    Last modifiedVulnerability information updated.

Description

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.

CVSS metrics

2 scores · 1 source · 2 versions

EPSS trend

Probability

1.19%

Chance of exploitation in the next 30 days

Percentile

68%

Versus all other CVEs

30-day change

-0.64 pp

From 1.83% on 21-09-2026

21-09-202621-10-2026
EPSS score
1.19%

Known exploited

Compare KEV catalogs

Not in any of the 3 tracked catalogs.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

Affected systems

Apple1 product

1 vendor · 1 product

References

3 links