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CVE-2018-4190

28
FAUCET Score

CVE-2018-4190 is a high-severity vulnerability affecting Apple products including iOS, Safari, iCloud for Windows, iTunes for Windows, and tvOS, all in specific versions prior to their respective patches. The flaw resides in the WebKit component and allows remote attackers to obtain sensitive credential information during a CSS mask-image fetch. With a CVSS score of 8.8, this vulnerability has a network attack vector, low attack complexity, and can lead to high impact on confidentiality, integrity, and availability. There is no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage regarding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
< 11.1.1CPE matchmatch criteria
cpe:2.3:a:apple:safari:*:*:*:*:*:*:*:*
< 11.4CPE matchmatch criteria
cpe:2.3:o:apple:iphone_os:*:*:*:*:*:*:*:*
< 11.4CPE matchmatch criteria
cpe:2.3:o:apple:tvos:*:*:*:*:*:*:*:*
< 7.5CPE matchmatch criteria
cpe:2.3:a:apple:icloud:*:*:*:*:*:*:*:*
< 12.7.5CPE matchmatch criteria
cpe:2.3:a:apple:itunes:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.0

8.8HIGH

CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
REQUIRED
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
Exploitability Score
2.8
Impact Score
5.9
CvssVersion
3.0

Exploit Intelligence

EPSS Score
3.58%
Probability of exploitation in next 30 days
EPSS Percentile
88.2%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0358 is in the 87th percentile among its peer group of 14,875 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.2 Bluesky, 0.1 Mastodon, and 0.2 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.3 InfoSec Media, 0.0 Vendor Blog, and 0.1 Security Researcher mentions.

Remediation

Vendor Patches (1)

applevendor investigatingvia nvd_reference
View patch

References

security.gentoo.org / glsa/201808-04
Third Party Advisory
support.apple.com / HT208848
Vendor Advisory
support.apple.com / HT208850
Vendor Advisory
support.apple.com / HT208852
Vendor Advisory
support.apple.com / HT208853
Vendor Advisory
support.apple.com / HT208854
Vendor Advisory
usn.ubuntu.com / 3687-1
Third Party Advisory
securitytracker.com / id/1041029
Third Party AdvisoryVDB Entry