Is CVE-2021-30852 in the CISA KEV catalog?

No. CVE-2021-30852 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2021-30852?

CVE-2021-30852 has a CVSS v3 base score of 8.8 (HIGH).

What is the EPSS score for CVE-2021-30852?

CVE-2021-30852 has an EPSS score of 1.41% (69th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2021-30852?

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

CVE & CISA-KEV Catalog

CVE-2021-30852

HIGH

8.8

CVSS v3

NVD

Description

A type confusion issue was addressed with improved memory handling. This issue is fixed in iOS 14.8 and iPadOS 14.8, tvOS 15, watchOS 8, iOS 15 and iPadOS 15. Processing maliciously crafted web content may lead to arbitrary code execution.

CWE-843Type Confusion

How to fix

Remediation Available

ipadosNVD

Affected:< 14.8Fixed in:14.8CVE-2021-30852derived from NVD

iphone osNVD

Affected:< 14.8Fixed in:14.8CVE-2021-30852derived from NVD

macosNVD

Affected:< 12.0.1Fixed in:12.0.1CVE-2021-30852derived from NVD

tvosNVD

Affected:< 15.0Fixed in:15.0CVE-2021-30852derived from NVD

watchosNVD

Affected:< 8.0Fixed in:8.0CVE-2021-30852derived 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 VectorNetwork

Attack ComplexityLow

Privileges RequiredNone

User InteractionRequired

ScopeUnchanged

Impact

ConfidentialityHigh

IntegrityHigh

AvailabilityHigh

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

Exploit Intelligence

1.41%probability of exploitation in 30 days

69thpercentile

Moderate risk: more likely to be exploited than 69% of all known CVEs.

References

Other references6

Related Vulnerabilities

Other CWE-843 (Type Confusion) vulnerabilities, ordered by exploit likelihood. View all

CVE	Severity	CVSS	EPSS	Exploited	Fix
CVE-2011-0611	High	8.8	99%	KEV	Fix
CVE-2012-0507	Critical	9.8	98%	KEV + Ransom	-
CVE-2017-8291	High	7.8	97%	KEV	Fix
CVE-2019-0752	High	7.5	82%	KEV + Ransom	-
CVE-2017-0037	High	8.1	80%	KEV	-
CVE-2016-7201	High	8.8	80%	KEV	-

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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.