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CVE-2016-4590

20
FAUCET Score

CVE-2016-4590 describes a vulnerability in WebKit, affecting Apple iOS before 9.3.3 and Safari before 9.1.2. This flaw allows remote attackers to bypass the Same Origin Policy by manipulating about: URLs through a crafted website. Rated with a CVSS score of 5.4 (MEDIUM), it requires user interaction and could lead to limited confidentiality and integrity impacts. There is no evidence of active exploitation, publicly available exploit code, or significant community discussion surrounding this vulnerability.

Impacted Technologies

VendorProductVersion(s)CPE
<= 9.1.1CPE matchmatch criteria
cpe:2.3:a:apple:safari:*:*:*:*:*:*:*:*
All Versions ImpactedCPE matchmatch criteria
cpe:2.3:a:apple:webkit:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.0

5.4MEDIUM

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

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
REQUIRED
Scope
UNCHANGED
Confidentiality Impact
LOW
Integrity Impact
LOW
Availability Impact
NONE
Exploitability Score
2.8
Impact Score
2.5
CvssVersion
3.0

Exploit Intelligence

EPSS Score
1.46%
Probability of exploitation in next 30 days
EPSS Percentile
70.9%
Percentile rank of EPSS score among Peer Group
As of 2026-07-25
Model: v2026.06.15
This CVE's current EPSS score of 0.0146 is in the 83rd 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 List
lists.apple.com / archives/security-announce/2016/Jul/msg00004.html
Mailing List
packetstormsecurity.com / files/138502/WebKitGTK-SOP-Bypass-Information-Disclosure.html
support.apple.com / HT206900
Vendor Advisory
support.apple.com / HT206902
Vendor Advisory
securityfocus.com / archive/1/539295/100/0/threaded
securityfocus.com / bid/91835
securitytracker.com / id/1036343