Is CVE-2021-30842 in the CISA KEV catalog?

No. CVE-2021-30842 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2021-30842?

CVE-2021-30842 has a CVSS v3 base score of 7.8 (HIGH).

What is the EPSS score for CVE-2021-30842?

CVE-2021-30842 has an EPSS score of 1.29% (67th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2021-30842?

Upgrade ipados to 14.8 or later. Fixes are available for 5 affected products.

CVE & CISA-KEV Catalog

CVE-2021-30842

HIGH

7.8

CVSS v3

NVD

Description

This issue was addressed with improved checks. This issue is fixed in iOS 14.8 and iPadOS 14.8, macOS Big Sur 11.6, Security Update 2021-005 Catalina, tvOS 15, iOS 15 and iPadOS 15, watchOS 8. Processing a maliciously crafted dfont file may lead to arbitrary code execution.

How to fix

Remediation Available

ipadosNVD

Affected:< 14.8Fixed in:14.8CVE-2021-30842derived from NVD

iphone osNVD

Affected:< 14.8Fixed in:14.8CVE-2021-30842derived from NVD

macosNVD

Affected:>= 11.0, < 11.6Fixed in:11.6CVE-2021-30842derived from NVD

tvosNVD

Affected:< 15.0Fixed in:15.0CVE-2021-30842derived from NVD

watchosNVD

Affected:< 8.0Fixed in:8.0CVE-2021-30842derived 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

IntegrityHigh

AvailabilityHigh

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

Exploit Intelligence

1.29%probability of exploitation in 30 days

67thpercentile

Moderate risk: more likely to be exploited than 67% of all known CVEs.

References

Vendor Advisory6

Third-Party Advisory3

Embed a live status badge for CVE-2021-30842

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.