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Vulnerability record · CVE-2020-36521 · published 23 September 2022

CVE-2020-36521: Apple icloud out-of-bounds read vulnerability

Apple · Icloud

An out-of-bounds read was addressed with improved input validation. This issue is fixed in iCloud for Windows 11.4, iOS 14.0 and iPadOS 14.0, watchOS 7.0, tvOS 14.0, iCloud for Windows 7.21, iTunes for Windows 12.10.9. Processing a maliciously crafted tiff file may lead to a denial-of-service or potentially disclose memory contents.

7.1 CVSS 3.1 High EPSS 0.44% · top 62.9% CWE-125 · Out-of-bounds read
7.1CVSS 3.1 base score
0.44%EPSS exploitation probability, 30 days
NoNot in CISA KEV
7Affected product versions listed by NVD
12References
17 Jun 2026Last modified by NVD

Description

An out-of-bounds read was addressed with improved input validation. This issue is fixed in iCloud for Windows 11.4, iOS 14.0 and iPadOS 14.0, watchOS 7.0, tvOS 14.0, iCloud for Windows 7.21, iTunes for Windows 12.10.9. Processing a maliciously crafted tiff file may lead to a denial-of-service or potentially disclose memory contents.

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

Affected products

7 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
https://support.apple.com/en-us/HT211843 Vendor Advisory
https://support.apple.com/en-us/HT211844 Vendor Advisory
https://support.apple.com/en-us/HT211846 Vendor Advisory
https://support.apple.com/en-us/HT211847 Vendor Advisory
https://support.apple.com/en-us/HT211850 Vendor Advisory
https://support.apple.com/en-us/HT211952 Vendor Advisory
https://support.apple.com/en-us/HT211843 Vendor Advisory
https://support.apple.com/en-us/HT211844 Vendor Advisory
https://support.apple.com/en-us/HT211846 Vendor Advisory
https://support.apple.com/en-us/HT211847 Vendor Advisory
https://support.apple.com/en-us/HT211850 Vendor Advisory
https://support.apple.com/en-us/HT211952 Vendor Advisory

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Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

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Source: NIST National Vulnerability Database (record CVE-2020-36521), CISA KEV, FIRST EPSS (scores of 2026-10-16). This page is refreshed as NVD updates the record.