CVE-2020-11759: Apple iCloud

Medium severity, CVSS 5.5. EPSS: 1.7% chance of exploitation in the next 30 days.

An issue was discovered in OpenEXR before 2.4.1. Because of integer overflows in CompositeDeepScanLine::Data::handleDeepFrameBuffer and readSampleCountForLineBlock, an attacker can write to an out-of-bounds pointer.

Affected products

• Apple iCloud: before 7.20 (fixed in 7.20); from 10.0, before 11.3 (fixed in 11.3)
• Apple iPadOS: before 13.6 (fixed in 13.6)
• Apple iPhone OS: before 13.6 (fixed in 13.6)
• Apple iTunes: before 12.10.8 (fixed in 12.10.8)
• Apple Mac OS X: from 10.13.0, before 10.13.6 (fixed in 10.13.6); from 10.14.0, before 10.14.6 (fixed in 10.14.6); from 10.15, before 10.15.6 (fixed in 10.15.6); version 10.13.6 only; version 10.14.6 only
• Apple tvOS: before 13.4.8 (fixed in 13.4.8)
• Apple watchOS: before 6.2.8 (fixed in 6.2.8)
• Canonical Ubuntu Linux: version 16.04 only; version 18.04 only; version 19.10 only; version 20.04 only
• Debian Debian Linux: version 9.0 only; version 10.0 only
• Fedoraproject Fedora: version 32 only
• Openexr Openexr: before 2.4.1 (fixed in 2.4.1)

Published 2020-04-14. Last modified 2026-06-17.