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CVE-2016-4622

38
FAUCET Score

CVE-2016-4622 is a memory corruption vulnerability in WebKit affecting Apple iOS before 9.3.3, Safari before 9.1.2, and tvOS before 9.2.2. A remote attacker could exploit this by enticing a user to visit a crafted website, leading to arbitrary code execution or a denial of service. With a CVSS score of 8.8 (High), this vulnerability is easily exploitable over a network with low attack complexity, posing a significant risk to confidentiality, integrity, and availability. While there is no evidence of active exploitation or public exploit code, the vulnerability has garnered some community discussion, indicating awareness within the security community.

Impacted Technologies

VendorProductVersion(s)CPE
< 9.1.2CPE matchmatch criteria
cpe:2.3:a:apple:safari:*:*:*:*:*:*:*:*
< 9.3.3CPE matchmatch criteria
cpe:2.3:o:apple:iphone_os:*:*:*:*:*:*:*:*
< 9.2.2CPE matchmatch criteria
cpe:2.3:o:apple:tvos:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.0

8.8HIGH

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

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
REQUIRED
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
Exploitability Score
2.8
Impact Score
5.9
CvssVersion
3.0

Exploit Intelligence

EPSS Score
18.84%
Probability of exploitation in next 30 days
EPSS Percentile
97.0%
Percentile rank of EPSS score among Peer Group
As of 2026-07-26
Model: v2026.06.15
This CVE's current EPSS score of 0.1884 is in the 97th percentile among its peer group of 14,848 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

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

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
lists.apple.com / archives/security-announce/2016/Jul/msg00004.html
Mailing ListVendor Advisory
packetstormsecurity.com / files/138502/WebKitGTK-SOP-Bypass-Information-Disclosure.html
Third Party AdvisoryVDB Entry
support.apple.com / HT206900
Vendor Advisory
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/1036343
Third Party AdvisoryVDB Entry
zerodayinitiative.com / advisories/ZDI-16-485
Third Party AdvisoryVDB Entry
zerodayinitiative.com / advisories/ZDI-16-486
Third Party AdvisoryVDB Entry