7.5

CVE-2018-4227: apple iphone_os

CVSS: 7.5v3.0HighModified
Published 08-06-2018Last modified 05-08-2024
Open JSON

Vulnerability summary

CVE-2018-4227 is a high (CVSS 7.5) vulnerability in apple iphone_os. EPSS estimates a 1.83% chance of exploitation in the next 30 days, higher than 78.5% of scored vulnerabilities. 1 public exploit is recorded.

Overall risk
40/100
0100
Medium · default modelHow is this calculated?
CVSS score
7.5/10
010
High · v3.0 (NVD)
EPSS score
1.83%
0%100%
Low · -0.04 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits1reference

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. iOS before 11.4 is affected. macOS before 10.13.5 is affected. The issue involves the "Mail" component. It allows remote attackers to read the cleartext content of S/MIME encrypted messages via direct exfiltration.

CVSS metrics

2 scores · 1 source · 2 versions

EPSS trend

Probability

1.83%

Chance of exploitation in the next 30 days

Percentile

79%

Versus all other CVEs

30-day change

-0.04 pp

From 1.87% on 20-09-2026

20-09-202620-10-2026
EPSS score
1.83%

Known exploited

Compare KEV catalogs

Not in any of the 3 tracked catalogs.

Public exploits

1 found
  • referenceUnverified

    Exploit Reference (efail.de)

    Maturity: unknown

Weaknesses

CWE · root cause

Affected systems

Apple2 products

1 vendor · 2 products

References

5 links