Is CVE-2020-3855 in the CISA KEV catalog?

No. CVE-2020-3855 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2020-3855?

CVE-2020-3855 has a CVSS v3 base score of 7.1 (HIGH).

What is the EPSS score for CVE-2020-3855?

CVE-2020-3855 has an EPSS score of 0.67% (47th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2020-3855?

Upgrade mac os x to 10.15.3 or later.

CVE & CISA-KEV Catalog

CVE-2020-3855

HIGH

7.1

CVSS v3

NVD

Description

An access issue was addressed with improved access restrictions. This issue is fixed in macOS Catalina 10.15.3, Security Update 2020-001 Mojave, Security Update 2020-001 High Sierra. A malicious application may be able to overwrite arbitrary files.

How to fix

Remediation Available

mac os xNVD

Affected:< 10.15.3Fixed in:10.15.3CVE-2020-3855derived from NVD

Remediation is compiled from vendor and distribution security advisories. Always confirm against the linked source for your exact version and platform.

CVSS v3 Vector

Exploitability

Attack VectorLocal

Attack ComplexityLow

Privileges RequiredNone

User InteractionRequired

ScopeUnchanged

Impact

ConfidentialityNone

IntegrityHigh

AvailabilityHigh

CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:H

Exploit Intelligence

0.67%probability of exploitation in 30 days

47thpercentile

Moderate risk: more likely to be exploited than 47% of all known CVEs.

References

Vendor Advisory1

support.apple.com

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This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2024-11-21.