CVE-2018-4227

HIGH

iPhone OS < 11.4 and macOS < 10.13.5 - Cleartext Transmission of Sensitive Information in Mail

Title source: llm
STIX 2.1

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.

References (5)

Core 5
Core References
Exploit, Third Party Advisory x_refsource_misc
https://efail.de/#cve
Third Party Advisory, VDB Entry vdb-entry x_refsource_sectrack
http://www.securitytracker.com/id/1041027
Third Party Advisory, VDB Entry vdb-entry x_refsource_bid
http://www.securityfocus.com/bid/104897
Vendor Advisory x_refsource_confirm
https://support.apple.com/HT208848
Vendor Advisory x_refsource_confirm
https://support.apple.com/HT208849

Scores

CVSS v3 7.5
EPSS 0.0189
EPSS Percentile 76.9%
Attack Vector NETWORK
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

Details

CWE
CWE-319
Status published
Products (2)
apple/iphone_os < 11.4
apple/mac_os_x < 10.13.5
Published Jun 08, 2018
Tracked Since Feb 18, 2026