How severe is CVE-2016-4603?

CVE-2016-4603 has a CVSS 3.x base score of 4.3, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is low, integrity none, and availability none.

Is CVE-2016-4603 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (64th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2016-4603?

CVE-2016-4603 affects Apple Iphone Os. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2016-4603?

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

When was CVE-2016-4603 published?

CVE-2016-4603 was published on 2016-07-22 and last updated on 2026-06-17.

CVE-2016-4603

CVE-2016-4603 is a medium-severity vulnerability in Apple Iphone Os with a CVSS 3.x base score of 4.3. 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-254.

Key facts

Severity: Medium (CVSS 3.x base score 4.3)
CVSS v2: 4.3
EPSS exploit prediction: 1% (64th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-254
Affected product: Apple Iphone Os
Published: 2016-07-22
Last modified: 2026-06-17

Description

Web Media in Apple iOS before 9.3.3 allows attackers to bypass the Private Browsing protection mechanism and obtain sensitive video URL information by leveraging Safari View Controller misbehavior.

Frequently asked questions

What is CVE-2016-4603?: Web Media in Apple iOS before 9.3.3 allows attackers to bypass the Private Browsing protection mechanism and obtain sensitive video URL information by leveraging Safari View Controller misbehavior.
How severe is CVE-2016-4603?: CVE-2016-4603 has a CVSS 3.x base score of 4.3, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is low, integrity none, and availability none.
Is CVE-2016-4603 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (64th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2016-4603?: CVE-2016-4603 affects Apple Iphone Os. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2016-4603?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2016-4603 published?: CVE-2016-4603 was published on 2016-07-22 and last updated on 2026-06-17.

References

Affected products (1)

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

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