Is CVE-2021-30955 in the CISA KEV catalog?

No. CVE-2021-30955 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2021-30955?

CVE-2021-30955 has a CVSS v3 base score of 7.0 (HIGH).

What is the EPSS score for CVE-2021-30955?

CVE-2021-30955 has an EPSS score of 4.60% (91th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2021-30955?

Upgrade ipados to 15.2 or later. Fixes are available for 5 affected products.

CVE & CISA-KEV Catalog

CVE-2021-30955

HIGHEPSS 91th pctl

7.0

CVSS v3

NVD

Description

A race condition was addressed with improved state handling. This issue is fixed in macOS Monterey 12.1, watchOS 8.3, iOS 15.2 and iPadOS 15.2, tvOS 15.2. A malicious application may be able to execute arbitrary code with kernel privileges.

CWE-362Race Condition

How to fix

Remediation Available

ipadosNVD

Affected:< 15.2Fixed in:15.2CVE-2021-30955derived from NVD

iphone osNVD

Affected:< 15.2Fixed in:15.2CVE-2021-30955derived from NVD

macosNVD

Affected:< 12.1Fixed in:12.1CVE-2021-30955derived from NVD

tvosNVD

Affected:< 15.2Fixed in:15.2CVE-2021-30955derived from NVD

watchosNVD

Affected:< 8.3Fixed in:8.3CVE-2021-30955derived 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 ComplexityHigh

Privileges RequiredNone

User InteractionRequired

ScopeUnchanged

Impact

ConfidentialityHigh

IntegrityHigh

AvailabilityHigh

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

Exploit Intelligence

4.60%probability of exploitation in 30 days

91stpercentile

High risk: more likely to be exploited than 91% of all known CVEs.

References

Other references4

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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.