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CVE-2018-4366

36
FAUCET Score

CVE-2018-4366 is a high-severity memory corruption vulnerability affecting Apple iOS versions prior to 12.1, specifically within FaceTime's VCPDecompressionDecodeFrame function. This flaw, rated 7.5 CVSS, allows an unauthenticated attacker to achieve high confidentiality impact over a network with low attack complexity. While not currently on the CISA KEV list and showing no active exploitation or significant community discussion, a public exploit (EDB-45788) exists, indicating its potential for abuse.

Impacted Technologies

VendorProductVersion(s)CPE
< 12.1CPE matchmatch criteria
cpe:2.3:o:apple:iphone_os:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.0

7.5HIGH

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

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
NONE
Availability Impact
NONE
Exploitability Score
3.9
Impact Score
3.6
CvssVersion
3.0

Exploit Intelligence

EPSS Score
6.45%
Probability of exploitation in next 30 days
EPSS Percentile
93.0%
Percentile rank of EPSS score among Peer Group
As of 2026-07-25
Model: v2026.06.15
ExploitDB: EDB-45788 · Nov 6, 2018
This CVE's current EPSS score of 0.0645 is in the 88th percentile among its peer group of 51,485 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.1 Mastodon, and 0.4 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 / kb/HT209192
Vendor Advisory