How severe is CVE-2020-9860?

CVE-2020-9860 has a CVSS 3.x base score of 5.4, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is low, integrity low, and availability none.

Is CVE-2020-9860 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (58th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2020-9860?

CVE-2020-9860 affects Apple Safari. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2020-9860?

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

When was CVE-2020-9860 published?

CVE-2020-9860 was published on 2020-10-27 and last updated on 2026-06-17.

CVE-2020-9860

CVE-2020-9860 is a medium-severity vulnerability in Apple Safari with a CVSS 3.x base score of 5.4. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low.

Key facts

Severity: Medium (CVSS 3.x base score 5.4)
CVSS v2: 5.8
EPSS exploit prediction: 1% (58th percentile)
Actively exploited: Not listed in CISA KEV
Affected product: Apple Safari
Published: 2020-10-27
Last modified: 2026-06-17

Description

A custom URL scheme handling issue was addressed with improved input validation. This issue is fixed in Safari 13.0.5. Processing a maliciously crafted URL may lead to arbitrary javascript code execution.

Frequently asked questions

What is CVE-2020-9860?: A custom URL scheme handling issue was addressed with improved input validation. This issue is fixed in Safari 13.0.5. Processing a maliciously crafted URL may lead to arbitrary javascript code execution.
How severe is CVE-2020-9860?: CVE-2020-9860 has a CVSS 3.x base score of 5.4, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is low, integrity low, and availability none.
Is CVE-2020-9860 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (58th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2020-9860?: CVE-2020-9860 affects Apple Safari. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2020-9860?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2020-9860 published?: CVE-2020-9860 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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