Is CVE-2021-30656 in the CISA KEV catalog?

No. CVE-2021-30656 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2021-30656?

CVE-2021-30656 has a CVSS v3 base score of 5.5 (MEDIUM).

What is the EPSS score for CVE-2021-30656?

CVE-2021-30656 has an EPSS score of 0.86% (54th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2021-30656?

Upgrade ipados to 14.5 or later. Fixes are available for 2 affected products.

CVE & CISA-KEV Catalog

CVE-2021-30656

MEDIUM

5.5

CVSS v3

NVD

Description

An access issue was addressed with improved memory management. This issue is fixed in iOS 14.5 and iPadOS 14.5. A malicious application may be able to determine kernel memory layout.

How to fix

Remediation Available

ipadosNVD

Affected:< 14.5Fixed in:14.5CVE-2021-30656derived from NVD

iphone osNVD

Affected:< 14.5Fixed in:14.5CVE-2021-30656derived 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

ConfidentialityHigh

IntegrityNone

AvailabilityNone

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

Exploit Intelligence

0.86%probability of exploitation in 30 days

54thpercentile

Moderate risk: more likely to be exploited than 54% of all known CVEs.

References

Vendor Advisory1

support.apple.com

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Markdown

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HTML

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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.