CVE-2021-1853

CVE-2021-1853 is a high-severity vulnerability in Apple Macos with a CVSS 3.x base score of 7.8. 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-269.

Key facts

Description

A logic issue was addressed with improved state management. This issue is fixed in macOS Big Sur 11.3. A local attacker may be able to elevate their privileges.

Frequently asked questions

What is CVE-2021-1853?
A logic issue was addressed with improved state management. This issue is fixed in macOS Big Sur 11.3. A local attacker may be able to elevate their privileges.
How severe is CVE-2021-1853?
CVE-2021-1853 has a CVSS 3.x base score of 7.8, rated high severity. It is exploitable over local access with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2021-1853 being actively exploited?
It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (21st percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2021-1853?
CVE-2021-1853 affects Apple Macos. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2021-1853?
Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
When was CVE-2021-1853 published?
CVE-2021-1853 was published on 2021-09-08 and last updated on 2026-06-17.

References

Affected products (1)

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