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CVE-2018-4448

21
FAUCET Score

CVE-2018-4448 is a memory initialization vulnerability affecting Apple's iOS, macOS, tvOS, and watchOS, where improved memory handling was required. A local attacker could exploit this with low complexity to read kernel memory, leading to a high confidentiality impact. Rated 5.5 (Medium), this vulnerability has no known public exploits, Metasploit modules, or significant community discussion, and is not listed on CISA's KEV catalog. The issue was addressed in various Apple updates, including macOS Mojave 10.14.4 and iOS 12.1.1.

Impacted Technologies

VendorProductVersion(s)CPE
< 12.1.1CPE matchmatch criteria
cpe:2.3:o:apple:iphone_os:*:*:*:*:*:*:*:*
>= 10.12.6, < 10.14.4CPE matchmatch criteria
cpe:2.3:o:apple:mac_os_x:*:*:*:*:*:*:*:*
< 12.1.1CPE matchmatch criteria
cpe:2.3:o:apple:tvos:*:*:*:*:*:*:*:*
< 5.1.2CPE matchmatch criteria
cpe:2.3:o:apple:watchos:*:*:*:*:*:*:*:*
>= 10.13.6, < 10.14.2CPE matchmatch criteria
cpe:2.3:o:apple:mac_os_x:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

5.5MEDIUM

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N

Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
NONE
Availability Impact
NONE
Exploitability Score
1.8
Impact Score
3.6
CvssVersion
3.1

Exploit Intelligence

EPSS Score
0.29%
Probability of exploitation in next 30 days
EPSS Percentile
21.6%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0029 is in the 78th percentile among its peer group of 15,940 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 / en-us/HT209340
Vendor Advisory
support.apple.com / en-us/HT209341
Vendor Advisory
support.apple.com / en-us/HT209342
Vendor Advisory
support.apple.com / en-us/HT209343
Vendor Advisory
support.apple.com / en-us/HT209600
Vendor Advisory