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CVE-2016-4635

21
FAUCET Score

CVE-2016-4635 describes a medium-severity vulnerability in FaceTime on Apple iOS before 9.3.3 and OS X before 10.11.6. This flaw allows a man-in-the-middle attacker to spoof relayed-call termination, potentially leading to the unauthorized acquisition of sensitive audio information under specific conditions. The attack requires high attack complexity and low privileges, but can result in high confidentiality impact. There is no evidence of active exploitation, public exploit code, or significant community discussion surrounding this vulnerability.

Impacted Technologies

VendorProductVersion(s)CPE
<= 9.3.2CPE matchmatch criteria
cpe:2.3:o:apple:iphone_os:*:*:*:*:*:*:*:*
<= 10.11.5CPE matchmatch criteria
cpe:2.3:o:apple:mac_os_x:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.0

5.3MEDIUM

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

Attack Vector
NETWORK
Attack Complexity
HIGH
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
NONE
Availability Impact
NONE
Exploitability Score
1.6
Impact Score
3.6
CvssVersion
3.0

Exploit Intelligence

EPSS Score
1.15%
Probability of exploitation in next 30 days
EPSS Percentile
63.4%
Percentile rank of EPSS score among Peer Group
As of 2026-07-24
Model: v2026.06.15
This CVE's current EPSS score of 0.0115 is in the 60th percentile among its peer group of 1,425 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/msg00000.html
Mailing ListVendor Advisory
lists.apple.com / archives/security-announce/2016/Jul/msg00001.html
Mailing ListVendor Advisory
support.apple.com / HT206902
Vendor Advisory
support.apple.com / HT206903
Vendor Advisory
securityfocus.com / bid/91829
securitytracker.com / id/1036344
securitytracker.com / id/1037086