← Vulnerability feed

Vulnerability record · CVE-2019-8746 · published 27 October 2020

CVE-2019-8746: 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 macOS Catalina 10.15, iOS 13, iCloud for Windows 7.14, iCloud for Windows 10.7, tvOS 13, macOS Catalina 10.15.1, Security Update 2019-001, and Security Update 2019-006, watchOS 6, iTunes 12.10.1 for Windows. A remote attacker may be able to cause unexpected application termination or arbitrary code execution.

9.8 CVSS 3.1 Critical EPSS 3.0% · top 13.1% CWE-125 · Out-of-bounds read
9.8CVSS 3.1 base score, v2 7.5
3.0%EPSS exploitation probability, 30 days
NoNot in CISA KEV
6Affected product versions listed by NVD
16References
17 Jun 2026Last modified by NVD

Description

An out-of-bounds read was addressed with improved input validation. This issue is fixed in macOS Catalina 10.15, iOS 13, iCloud for Windows 7.14, iCloud for Windows 10.7, tvOS 13, macOS Catalina 10.15.1, Security Update 2019-001, and Security Update 2019-006, watchOS 6, iTunes 12.10.1 for Windows. A remote attacker may be able to cause unexpected application termination or arbitrary code execution.

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

Affected products

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

References

LinkTags
https://support.apple.com/en-us/HT210604 Vendor Advisory
https://support.apple.com/en-us/HT210606 Vendor Advisory
https://support.apple.com/en-us/HT210607 Vendor Advisory
https://support.apple.com/en-us/HT210634 Vendor Advisory
https://support.apple.com/en-us/HT210635 Vendor Advisory
https://support.apple.com/en-us/HT210636 Vendor Advisory
https://support.apple.com/en-us/HT210637 Vendor Advisory
https://support.apple.com/en-us/HT210722 Vendor Advisory
https://support.apple.com/en-us/HT210604 Vendor Advisory
https://support.apple.com/en-us/HT210606 Vendor Advisory
https://support.apple.com/en-us/HT210607 Vendor Advisory
https://support.apple.com/en-us/HT210634 Vendor Advisory
https://support.apple.com/en-us/HT210635 Vendor Advisory
https://support.apple.com/en-us/HT210636 Vendor Advisory
https://support.apple.com/en-us/HT210637 Vendor Advisory
https://support.apple.com/en-us/HT210722 Vendor Advisory

Track CVE-2019-8746 inside VULONE

Watch it alongside the ransomware crews, C2 infrastructure and forum chatter that reference it, query it through the API and pull it into your SIEM over TAXII.

Start free Open in platform

Related vulnerabilities

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

10.0CVE-2025-43300Apple iOS, iPadOS and macOS out-of-bounds write via malicious imageAn out-of-bounds write in Apple iOS, iPadOS and macOS is triggered when processing a malicious image file, causing memory corruption. Apple states th…KEVEPSS 32%analysed10.0CVE-2025-24201Apple WebKit out-of-bounds write allows sandbox escapeCVE-2025-24201 is an out-of-bounds write in Apple's WebKit that was addressed with improved checks. Maliciously crafted web content may break out of …KEVEPSS 3.8%analysed10.0CVE-2025-24085Apple iOS, iPadOS, macOS, tvOS, visionOS, watchOS Use-After-Free Privilege EscalationA use-after-free flaw in Apple's operating systems was fixed through improved memory management in iOS 18.3, iPadOS 18.3 and 17.7.6, macOS Sequoia 15…KEVEPSS 18%analysed9.8CVE-2025-31200Apple OS media parsing memory corruption allows code executionA memory corruption flaw in Apple's audio stream processing was fixed with improved bounds checking across iOS, iPadOS, macOS, tvOS, visionOS and wat…KEVEPSS 19%analysed9.8CVE-2025-31201Apple OS Pointer Authentication bypass via arbitrary read/writeApple removed vulnerable code that allowed an attacker holding arbitrary read and write capability to bypass Pointer Authentication across iOS, iPadO…KEVEPSS 14%analysed9.8CVE-2022-22587Apple iOS, iPadOS and macOS kernel memory corruption via out-of-bounds writeAn out-of-bounds write (CWE-787) in Apple iOS, iPadOS and macOS is caused by insufficient input validation and can corrupt memory. Apple states it is…KEVEPSS 12%analysed9.8CVE-2021-1870Apple WebKit logic flaw allows remote code executionA logic issue in Apple's WebKit was addressed with improved restrictions, affecting macOS Big Sur, Catalina, Mojave, iOS and iPadOS, plus WebKitGTK a…KEVEPSS 7.7%analysed9.8CVE-2021-1871Apple WebKit logic flaw allows remote code executionA logic issue in Apple's WebKit was addressed with improved restrictions. It affects macOS Big Sur, Catalina, Mojave, iOS and iPadOS, and a remote at…KEVEPSS 7.0%analysed

Source: NIST National Vulnerability Database (record CVE-2019-8746), CISA KEV, FIRST EPSS (scores of 2026-09-28). This page is refreshed as NVD updates the record.