How severe is CVE-2016-4635?

CVE-2016-4635 has a CVSS 3.x base score of 5.3, rated medium severity. It is exploitable over network with high attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity none, and availability none.

Is CVE-2016-4635 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (63rd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2016-4635?

CVE-2016-4635 primarily affects Apple Iphone Os. In total, 2 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2016-4635?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

When was CVE-2016-4635 published?

CVE-2016-4635 was published on 2016-07-22 and last updated on 2026-06-17.

CVE-2016-4635

CVE-2016-4635 is a medium-severity vulnerability in Apple Iphone Os with a CVSS 3.x base score of 5.3. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-200.

Key facts

Severity: Medium (CVSS 3.x base score 5.3)
CVSS v2: 3.5
EPSS exploit prediction: 1% (63rd percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-200
Affected product: Apple Iphone Os
Published: 2016-07-22
Last modified: 2026-06-17

Description

FaceTime in Apple iOS before 9.3.3 and OS X before 10.11.6 allows man-in-the-middle attackers to spoof relayed-call termination, and obtain sensitive audio information in opportunistic circumstances, via unspecified vectors.

Frequently asked questions

What is CVE-2016-4635?: FaceTime in Apple iOS before 9.3.3 and OS X before 10.11.6 allows man-in-the-middle attackers to spoof relayed-call termination, and obtain sensitive audio information in opportunistic circumstances, via unspecified vectors.
How severe is CVE-2016-4635?: CVE-2016-4635 has a CVSS 3.x base score of 5.3, rated medium severity. It is exploitable over network with high attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity none, and availability none.
Is CVE-2016-4635 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (63rd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2016-4635?: CVE-2016-4635 primarily affects Apple Iphone Os. In total, 2 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2016-4635?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2016-4635 published?: CVE-2016-4635 was published on 2016-07-22 and last updated on 2026-06-17.

References

Affected products (2)

cpe:2.3:o:apple:iphone_os:*:*:*:*:*:*:*:*
cpe:2.3:o:apple:mac_os_x:*:*:*:*:*:*:*:*

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