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Vulnerability record · CVE-2020-9883 · published 22 October 2020

CVE-2020-9883: Apple icloud classic buffer overflow vulnerability

Apple · Icloud

A buffer overflow issue was addressed with improved memory handling. This issue is fixed in iOS 13.6 and iPadOS 13.6, macOS Catalina 10.15.6, tvOS 13.4.8, watchOS 6.2.8, iTunes 12.10.8 for Windows, iCloud for Windows 11.3, iCloud for Windows 7.20. Processing a maliciously crafted image may lead to arbitrary code execution.

7.8 CVSS 3.1 High EPSS 6.0% · top 7.0% CWE-120 · Classic buffer overflow
7.8CVSS 3.1 base score, v2 6.8
6.0%EPSS exploitation probability, 30 days
NoNot in CISA KEV
8Affected product versions listed by NVD
20References
17 Jun 2026Last modified by NVD

Description

A buffer overflow issue was addressed with improved memory handling. This issue is fixed in iOS 13.6 and iPadOS 13.6, macOS Catalina 10.15.6, tvOS 13.4.8, watchOS 6.2.8, iTunes 12.10.8 for Windows, iCloud for Windows 11.3, iCloud for Windows 7.20. Processing a maliciously crafted image may lead to arbitrary code execution.

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

Affected products

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

References

LinkTags
http://seclists.org/fulldisclosure/2020/Dec/32 Mailing ListThird Party Advisory
https://support.apple.com/kb/HT211288 Vendor Advisory
https://support.apple.com/kb/HT211289 Vendor Advisory
https://support.apple.com/kb/HT211290 Vendor Advisory
https://support.apple.com/kb/HT211291 Vendor Advisory
https://support.apple.com/kb/HT211293 Vendor Advisory
https://support.apple.com/kb/HT211294 Vendor Advisory
https://support.apple.com/kb/HT211295 Vendor Advisory
https://support.apple.com/kb/HT211931 Vendor Advisory
https://www.zerodayinitiative.com/advisories/ZDI-20-1389/ Third Party AdvisoryVDB Entry
http://seclists.org/fulldisclosure/2020/Dec/32 Mailing ListThird Party Advisory
https://support.apple.com/kb/HT211288 Vendor Advisory
https://support.apple.com/kb/HT211289 Vendor Advisory
https://support.apple.com/kb/HT211290 Vendor Advisory
https://support.apple.com/kb/HT211291 Vendor Advisory
https://support.apple.com/kb/HT211293 Vendor Advisory
https://support.apple.com/kb/HT211294 Vendor Advisory
https://support.apple.com/kb/HT211295 Vendor Advisory
https://support.apple.com/kb/HT211931 Vendor Advisory
https://www.zerodayinitiative.com/advisories/ZDI-20-1389/ Third Party AdvisoryVDB Entry

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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-2020-9883), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.