CVE-2025-43434
MediumCVSS 4.3Exploitation Probability (EPSS)
Elevated risk67th percentile - higher than 67% of all known CVEs
Summary
A use-after-free issue was addressed with improved memory management. Processing maliciously crafted web content may lead to an unexpected Safari crash. This issue is fixed in Safari 26.1, iOS 18.7.2 and iPadOS 18.7.2, iOS 26.1 and iPadOS 26.1, macOS Tahoe 26.1, visionOS 26.1, watchOS 26.1.
Risk Assessment
A user visiting a malicious website may cause a Safari crash, potentially leading to a denial of service. The risk affects all users of unpatched Apple devices.
Recommendation
Update Apple systems to the latest versions: Safari 26.1, iOS 18.7.2/iPadOS 18.7.2, iOS 26.1/iPadOS 26.1, macOS Tahoe 26.1, visionOS 26.1, watchOS 26.1.
Other vulnerabilities in Apple Safari
See all- CVE-2015-5780High
The Safari Extensions implementation in Apple Safari before version 9 does not require user confirmation before replacing an installed extension, which may lead to unspecified impacts and attack vectors.
- CVE-2014-1303High
A heap-based buffer overflow in Apple Safari 7.0.2 allows remote attackers to execute arbitrary code and bypass a sandbox protection mechanism.
- CVE-2014-1300High
An unspecified vulnerability in Apple Safari 7.0.2 on OS X allows remote attackers to execute arbitrary code with root privileges via unknown vectors.
- CVE-2022-42856HighActively exploited
A type confusion issue in Safari, iOS, iPadOS, macOS, and tvOS. Processing maliciously crafted web content may lead to arbitrary code execution. Apple is aware of reports that this issue may have been actively exploited.
- CVE-2019-8506HighActively exploited
A type confusion issue was addressed with improved memory handling. This issue is fixed in iOS 12.2, tvOS 12.2, watchOS 5.2, Safari 12.1, iTunes 12.9.4 for Windows, iCloud for Windows 7.11. Processing maliciously crafted web content may lead to arbitrary code execution.
- CVE-2026-65391High
An out-of-bounds write vulnerability in Safari and Apple systems. Processing maliciously crafted web content may lead to memory corruption.
- CVE-2026-65390High
An integer overflow vulnerability in Safari and Apple systems. Processing maliciously crafted web content may lead to memory corruption.
- CVE-2026-43670High
A Content Security Policy bypass was addressed in AudioWorklet contexts in Safari and Apple operating systems. Processing maliciously crafted web content may bypass CSP.
- CVE-2026-65341Medium
A memory handling issue in the web content processing component was addressed with improved memory handling. The flaw affects Safari, iOS, iPadOS, macOS Tahoe, tvOS, visionOS, and watchOS. Processing maliciously crafted web content may lead to memory corruption.
- CVE-2026-64787Medium
A use-after-free issue in the web content processing component was addressed with improved memory management. The flaw affects Safari, iOS, iPadOS, macOS Tahoe, tvOS, visionOS, and watchOS. Processing maliciously crafted web content may lead to an unexpected process termination.
Original NVD description (English source)
A use-after-free issue was addressed with improved memory management. This issue is fixed in Safari 26.1, iOS 18.7.2 and iPadOS 18.7.2, iOS 26.1 and iPadOS 26.1, macOS Tahoe 26.1, visionOS 26.1, watchOS 26.1. Processing maliciously crafted web content may lead to an unexpected Safari crash.
Vulnerability data from NVD (NIST) · CISA KEV · EPSS