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CVE-2018-4090

28
FAUCET Score

CVE-2018-4090 is a memory-read restriction bypass vulnerability affecting Apple's iOS, macOS, tvOS, and watchOS operating systems prior to specific versions. An attacker could exploit this flaw, located in the Kernel component, by tricking a user into installing a crafted application. The vulnerability has a CVSS v3 score of 5.5 (Medium), indicating a local attack vector with low complexity, requiring user interaction, and potentially leading to high confidentiality impact by allowing unauthorized memory reads. While there is no evidence of active exploitation, a proof-of-concept exploit for macOS has been published on ExploitDB, and the vulnerability has received minimal community discussion or media coverage.

Impacted Technologies

VendorProductVersion(s)CPE
< 11.2.5CPE matchmatch criteria
cpe:2.3:a:apple:apple_tv:*:*:*:*:*:*:*:*
< 11.2.5CPE matchmatch criteria
cpe:2.3:o:apple:iphone_os:*:*:*:*:*:*:*:*
< 10.13.3CPE matchmatch criteria
cpe:2.3:o:apple:mac_os_x:*:*:*:*:*:*:*:*
< 4.2.2CPE matchmatch criteria
cpe:2.3:o:apple:watchos:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.0

5.5MEDIUM

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

Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
REQUIRED
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
NONE
Availability Impact
NONE
Exploitability Score
1.8
Impact Score
3.6
CvssVersion
3.0

Exploit Intelligence

EPSS Score
3.76%
Probability of exploitation in next 30 days
EPSS Percentile
88.8%
Percentile rank of EPSS score among Peer Group
As of 2026-07-25
Model: v2026.06.15
ExploitDB: EDB-43923 · Jan 29, 2018
This CVE's current EPSS score of 0.0376 is in the 96th percentile among its peer group of 5,758 CVEs.

Social Chatter

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

Media Mentions

No media coverage found for this CVE.

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

Remediation

Vendor Patches (1)

applevendor investigatingvia nvd_reference
View patch

References

support.apple.com / HT208462
Vendor Advisory
support.apple.com / HT208463
Vendor Advisory
support.apple.com / HT208464
Vendor Advisory
support.apple.com / HT208465
Vendor Advisory
exploit-db.com / exploits/43923
ExploitThird Party AdvisoryVDB Entry
securityfocus.com / bid/102782
Third Party AdvisoryVDB Entry
securitytracker.com / id/1040265
Third Party AdvisoryVDB Entry
securitytracker.com / id/1040267
Third Party AdvisoryVDB Entry