Is CVE-2021-1803 in the CISA KEV catalog?

No. CVE-2021-1803 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2021-1803?

CVE-2021-1803 has a CVSS v3 base score of 3.3 (LOW).

What is the EPSS score for CVE-2021-1803?

CVE-2021-1803 has an EPSS score of 0.58% (44th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2021-1803?

Upgrade macos to 11.0.1 or later.

CVE & CISA-KEV Catalog

CVE-2021-1803

LOW

3.3

CVSS v3

NVD

Description

The issue was addressed with improved permissions logic. This issue is fixed in macOS Big Sur 11.0.1. A local application may be able to enumerate the user's iCloud documents.

How to fix

Remediation Available

macosNVD

Affected:< 11.0.1Fixed in:11.0.1CVE-2021-1803derived 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

ConfidentialityLow

IntegrityNone

AvailabilityNone

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

Exploit Intelligence

0.58%probability of exploitation in 30 days

44thpercentile

Moderate risk: more likely to be exploited than 44% 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.