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CVE-2016-4587

23
FAUCET Score

CVE-2016-4587 describes a vulnerability in WebKit, affecting Apple iOS before 9.3.3 and tvOS before 9.2.2, which allows remote attackers to extract sensitive information from uninitialized process memory through a specially crafted website. With a CVSS score of 6.5 (MEDIUM), this vulnerability has a network attack vector and low attack complexity, requiring user interaction to achieve high confidentiality impact. There is no evidence of active exploitation, publicly available exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage.

Impacted Technologies

VendorProductVersion(s)CPE
All Versions ImpactedCPE matchmatch criteria
cpe:2.3:a:apple:webkit:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.0

6.5MEDIUM

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

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
REQUIRED
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
NONE
Availability Impact
NONE
Exploitability Score
2.8
Impact Score
3.6
CvssVersion
3.0

Exploit Intelligence

EPSS Score
2.05%
Probability of exploitation in next 30 days
EPSS Percentile
79.3%
Percentile rank of EPSS score among Peer Group
As of 2026-07-25
Model: v2026.06.15
This CVE's current EPSS score of 0.0205 is in the 90th percentile among its peer group of 26,219 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 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

lists.apple.com / archives/security-announce/2016/Jul/msg00001.html
Mailing ListVendor Advisory
lists.apple.com / archives/security-announce/2016/Jul/msg00003.html
Mailing ListVendor Advisory
packetstormsecurity.com / files/138502/WebKitGTK-SOP-Bypass-Information-Disclosure.html
Third Party AdvisoryVDB Entry
support.apple.com / HT206902
Vendor Advisory
support.apple.com / HT206905
Vendor Advisory
securityfocus.com / archive/1/539295/100/0/threaded
Third Party AdvisoryVDB Entry
securityfocus.com / bid/91830
Third Party AdvisoryVDB Entry
securitytracker.com / id/1036344
Third Party AdvisoryVDB Entry