CVE-2020-9983

HighCVSS 8.8/10Last modified Jun 17, 2026

Description

An out-of-bounds write issue was addressed with improved bounds checking. This issue is fixed in Safari 14.0. Processing maliciously crafted web content may lead to code execution.

Metrics

CVSS 3.1 8.8/10CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

Weakness enumeration

CWE-787

Affected software

VendorProductVersions
AppleSafari>= unspecified, < Safari 14.0

References

Timeline

Published
Oct 16, 2020
Last modified
Jun 17, 2026
NVD status
Modified

Related CVEs from 2020

CVE-2020-99847.8An out-of-bounds read was addressed with improved input validation. This issue is fixed in iOS 13.6 and iPadOS 13.6, macOS Catalina 10.15.6,CVE-2020-99857.8A buffer overflow issue was addressed with improved memory handling. This issue is fixed in iOS 13.6 and iPadOS 13.6, macOS Catalina 10.15.6CVE-2020-99863.3A file access issue existed with certain home folder files. This was addressed with improved access restrictions. This issue is fixed in macCVE-2020-99874.3An inconsistent user interface issue was addressed with improved state management. This issue is fixed in Safari 14.0. Visiting a malicious CVE-2020-99885.5The issue was addressed with improved deletion. This issue is fixed in macOS Big Sur 11.0.1, iOS 14.0 and iPadOS 14.0. A local user may be aCVE-2020-99895.5The issue was addressed with improved deletion. This issue is fixed in macOS Big Sur 11.0.1, watchOS 7.0, iOS 14.0 and iPadOS 14.0. A local CVE-2020-99907.8A race condition was addressed with additional validation. This issue is fixed in macOS Catalina 10.15.6. A malicious application may be ablCVE-2020-99917.5This issue was addressed with improved checks. This issue is fixed in macOS Big Sur 11.0.1, watchOS 7.0, iOS 14.0 and iPadOS 14.0, iCloud foCVE-2020-99927.8This issue was addressed by encrypting communications over the network to devices running iOS 14, iPadOS 14, tvOS 14, and watchOS 7. This isCVE-2020-99934.3The issue was addressed with improved UI handling. This issue is fixed in watchOS 7.0, Safari 14.0, iOS 14.0 and iPadOS 14.0. Visiting a malCVE-2020-99947.1A path handling issue was addressed with improved validation. This issue is fixed in iOS 13.5 and iPadOS 13.5, macOS Catalina 10.15.5, tvOS CVE-2020-99956.1An issue existed in the parsing of URLs. This issue was addressed with improved input validation. This issue is fixed in macOS Server 5.11.
CVE-2020-9983: High severity, CVSS 8.8 | Vulnix