How severe is CVE-2020-3852?

CVE-2020-3852 has a CVSS 3.x base score of 5.3, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity low, and availability none.

Is CVE-2020-3852 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (57th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2020-3852?

CVE-2020-3852 affects Apple Safari. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2020-3852?

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

When was CVE-2020-3852 published?

CVE-2020-3852 was published on 2020-10-27 and last updated on 2026-06-17.

CVE-2020-3852

CVE-2020-3852 is a medium-severity vulnerability in Apple Safari 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-863.

Key facts

Severity: Medium (CVSS 3.x base score 5.3)
CVSS v2: 5.0
EPSS exploit prediction: 1% (57th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-863
Affected product: Apple Safari
Published: 2020-10-27
Last modified: 2026-06-17

Description

A logic issue was addressed with improved validation. This issue is fixed in Safari 13.0.5. A URL scheme may be incorrectly ignored when determining multimedia permission for a website.

Frequently asked questions

What is CVE-2020-3852?: A logic issue was addressed with improved validation. This issue is fixed in Safari 13.0.5. A URL scheme may be incorrectly ignored when determining multimedia permission for a website.
How severe is CVE-2020-3852?: CVE-2020-3852 has a CVSS 3.x base score of 5.3, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity low, and availability none.
Is CVE-2020-3852 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (57th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2020-3852?: CVE-2020-3852 affects Apple Safari. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2020-3852?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2020-3852 published?: CVE-2020-3852 was published on 2020-10-27 and last updated on 2026-06-17.

References

https://support.apple.com/en-us/HT210922

Affected products (1)

cpe:2.3:a:apple:safari:*:*:*:*:*:*:*:*

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