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CVE-2016-4660

24
FAUCET Score

CVE-2016-4660 is an out-of-bounds read vulnerability in the FontParser component of Apple iOS, macOS, tvOS, and watchOS, allowing remote attackers to trigger a denial of service or obtain sensitive information via a crafted font. This vulnerability has a CVSSv3 score of 7.1 (High), indicating a network-based attack requiring user interaction, with potential for partial confidentiality impact and high availability impact. Despite its severity, there is no evidence of active exploitation, publicly available exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage. The EPSS score is very low, suggesting a minimal likelihood of exploitation in the wild.

Impacted Technologies

VendorProductVersion(s)CPE
<= 10.0.3CPE matchmatch criteria
cpe:2.3:o:apple:iphone_os:*:*:*:*:*:*:*:*
<= 10.12.0CPE matchmatch criteria
cpe:2.3:o:apple:mac_os_x:*:*:*:*:*:*:*:*
<= 10.0CPE matchmatch criteria
cpe:2.3:o:apple:tvos:*:*:*:*:*:*:*:*
<= 2.2.2CPE matchmatch criteria
cpe:2.3:o:apple:watchos:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.0

7.1HIGH

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

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
REQUIRED
Scope
UNCHANGED
Confidentiality Impact
LOW
Integrity Impact
NONE
Availability Impact
HIGH
Exploitability Score
2.8
Impact Score
4.2
CvssVersion
3.0

Exploit Intelligence

EPSS Score
1.72%
Probability of exploitation in next 30 days
EPSS Percentile
75.1%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0172 is in the 74th percentile among its peer group of 14,855 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

support.apple.com / HT207269
Vendor Advisory
support.apple.com / HT207270
Vendor Advisory
support.apple.com / HT207271
Vendor Advisory
support.apple.com / HT207275
Vendor Advisory
securityfocus.com / bid/93849
Third Party AdvisoryVDB Entry
securitytracker.com / id/1037086
Third Party AdvisoryVDB Entry