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CVE-2016-4655

86
FAUCET Score

CVE-2016-4655 is a memory disclosure vulnerability in the Apple iOS kernel, affecting iPhones and other iOS devices. It allows a crafted application to obtain sensitive information from memory. With a CVSS score of 5.5 (MEDIUM), this vulnerability has a high impact on confidentiality, requiring user interaction and local access to exploit. It has been actively exploited in the wild, notably as part of the Pegasus spyware, with Metasploit modules and ExploitDB entries available, and has garnered significant community and media attention.

Impacted Technologies

VendorProductVersion(s)CPE
< 9.3.5CPE matchmatch criteria
cpe:2.3:o:apple:iphone_os:*:*:*:*:*:*:*:*
10.0CPE matchmatch criteria
cpe:2.3:o:apple:iphone_os:10.0:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

5.5MEDIUM

CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N

Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
REQUIRED
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
NONE
Availability Impact
NONE
Exploitability Score
1.8
Impact Score
3.6
CvssVersion
3.1

Exploit Intelligence

EPSS Score
30.32%
Probability of exploitation in next 30 days
EPSS Percentile
98.0%
Percentile rank of EPSS score among Peer Group
As of 2026-07-26
Model: v2026.06.15
Added to KEV · May 24, 2022
Metasploit: WebKit not_number defineProperties UAF · Aug 25, 2016
ExploitDB: EDB-44836 · Jun 5, 2018
This CVE's current EPSS score of 0.3032 is in the 100th percentile among its peer group of 5,758 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.0 Bluesky, 0.0 Mastodon, and 0.1 GitHub mentions.

Media Mentions

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

cisa.gov / known-exploited-vulnerabilities-catalog
US Government Resource
lists.apple.com / archives/security-announce/2016/Aug/msg00000.html
Broken LinkMailing ListVendor Advisory
lists.apple.com / archives/security-announce/2016/Sep/msg00005.html
Broken LinkMailing ListVendor Advisory
blog.lookout.com / blog/2016/08/25/trident-pegasus
Broken Link
support.apple.com / HT207107
Vendor Advisory
support.apple.com / HT207145
Vendor Advisory
exploit-db.com / exploits/44836
ExploitThird Party AdvisoryVDB Entry
securityfocus.com / bid/92651
Broken LinkThird Party AdvisoryVDB Entry
securityfocus.com / bid/92965
Broken LinkThird Party AdvisoryVDB Entry
securitytracker.com / id/1036694
Broken LinkThird Party AdvisoryVDB Entry