Is CVE-2021-30703 in the CISA KEV catalog?

No. CVE-2021-30703 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2021-30703?

CVE-2021-30703 has a CVSS v3 base score of 7.8 (HIGH).

What is the EPSS score for CVE-2021-30703?

CVE-2021-30703 has an EPSS score of 0.33% (25th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2021-30703?

Upgrade ipados to 14.6 or later. Fixes are available for 5 affected products.

CVE & CISA-KEV Catalog

CVE-2021-30703

HIGH

7.8

CVSS v3

NVD

Description

A double free issue was addressed with improved memory management. This issue is fixed in tvOS 14.6, iOS 14.6 and iPadOS 14.6, Security Update 2021-004 Catalina, Security Update 2021-005 Mojave, macOS Big Sur 11.4, watchOS 7.5. An application may be able to execute arbitrary code with kernel privileges.

CWE-415

How to fix

Remediation Available

ipadosNVD

Affected:< 14.6Fixed in:14.6CVE-2021-30703derived from NVD

iphone osNVD

Affected:< 14.6Fixed in:14.6CVE-2021-30703derived from NVD

macosNVD

Affected:>= 11.0, < 11.4Fixed in:11.4CVE-2021-30703derived from NVD

tvosNVD

Affected:< 14.6Fixed in:14.6CVE-2021-30703derived from NVD

watchosNVD

Affected:< 7.5Fixed in:7.5CVE-2021-30703derived 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 RequiredLow

User InteractionNone

ScopeUnchanged

Impact

ConfidentialityHigh

IntegrityHigh

AvailabilityHigh

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

Exploit Intelligence

0.33%probability of exploitation in 30 days

25thpercentile

Low risk: more likely to be exploited than 25% of all known CVEs.

References

Vendor Advisory6

Related Vulnerabilities

Other CWE-415 vulnerabilities, ordered by exploit likelihood. View all

CVE	Severity	CVSS	EPSS	Exploited	Fix
CVE-2023-25136	Medium	6.5	90%	-	Fix
CVE-2018-0101	Critical	10.0	87%	-	Fix
CVE-2003-0545	Critical	9.8	85%	-	Fix
CVE-2019-3829	Medium	5.3	59%	-	Fix
CVE-2026-33824	Critical	9.8	56%	-	Fix
CVE-2021-3407	Medium	5.5	50%	-	Fix

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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.