How severe is CVE-2019-8855?

CVE-2019-8855 has a CVSS 3.x base score of 6.3, rated medium severity. It is exploitable over local access with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is high, integrity none, and availability none.

Is CVE-2019-8855 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (50th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2019-8855?

CVE-2019-8855 affects Apple Mac Os X. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2019-8855?

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

When was CVE-2019-8855 published?

CVE-2019-8855 was published on 2020-10-27 and last updated on 2026-06-17.

CVE-2019-8855

CVE-2019-8855 is a medium-severity vulnerability in Apple Mac Os X with a CVSS 3.x base score of 6.3. 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 6.3)
CVSS v2: 4.3
EPSS exploit prediction: 1% (50th percentile)
Actively exploited: Not listed in CISA KEV
Affected product: Apple Mac Os X
Published: 2020-10-27
Last modified: 2026-06-17

Description

An access issue was addressed with additional sandbox restrictions. This issue is fixed in macOS Catalina 10.15. A malicious application may be able to access restricted files.

Frequently asked questions

What is CVE-2019-8855?: An access issue was addressed with additional sandbox restrictions. This issue is fixed in macOS Catalina 10.15. A malicious application may be able to access restricted files.
How severe is CVE-2019-8855?: CVE-2019-8855 has a CVSS 3.x base score of 6.3, rated medium severity. It is exploitable over local access with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is high, integrity none, and availability none.
Is CVE-2019-8855 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (50th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2019-8855?: CVE-2019-8855 affects Apple Mac Os X. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2019-8855?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2019-8855 published?: CVE-2019-8855 was published on 2020-10-27 and last updated on 2026-06-17.

References

https://support.apple.com/en-us/HT210634

Affected products (1)

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

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