Is CVE-2020-27933 in the CISA KEV catalog?

No. CVE-2020-27933 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2020-27933?

CVE-2020-27933 has a CVSS v3 base score of 7.8 (HIGH).

What is the EPSS score for CVE-2020-27933?

CVE-2020-27933 has an EPSS score of 0.99% (58th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2020-27933?

Upgrade iCloud (Legacy) to 7.20 or later.

CVE & CISA-KEV Catalog

CVE-2020-27933

HIGH

7.8

CVSS v3

NVD

Description

A memory corruption issue was addressed with improved input validation. This issue is fixed in iOS 13.6 and iPadOS 13.6, iCloud for Windows 7.20, watchOS 6.2.8, tvOS 13.4.8, macOS Catalina 10.15.6, Security Update 2020-004 Mojave, Security Update 2020-004 High Sierra. Processing a maliciously crafted image may lead to arbitrary code execution.

CWE-787Out-of-bounds Write

How to fix

Remediation Available

iCloud (Legacy)Windows application

Affected:7.20Fixed in:7.20Apple Inc.

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

0.99%probability of exploitation in 30 days

58thpercentile

Moderate risk: more likely to be exploited than 58% of all known CVEs.

References

Vendor Advisory5

Related Vulnerabilities

Other CWE-787 (Out-of-bounds Write) vulnerabilities, ordered by exploit likelihood. View all

CVE	Severity	CVSS	EPSS	Exploited	Fix
CVE-2025-22457	Critical	9.0	100%	KEV + Ransom	Fix
CVE-2025-0282	Critical	9.0	100%	KEV + Ransom	-
CVE-2015-3113	Critical	9.8	100%	KEV	Fix
CVE-2021-20038	Critical	9.8	100%	KEV + Ransom	-
CVE-2023-4863	High	8.8	100%	KEV	Fix
CVE-2020-16040	Medium	6.5	100%	-	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.