CVE-2025-43433 Details
Description
The issue was addressed with improved memory handling. 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, tvOS 26.1, visionOS 26.1, watchOS 26.1. Processing maliciously crafted web content may lead to memory corruption.
A vulnerability in WebKit, the engine used by Safari, has been identified that allows processing of maliciously crafted web content to lead to memory corruption. This issue can cause unexpected crashes of the Safari browser. The vulnerability is present in WebKit on various Apple platforms, including iOS, iPadOS, watchOS, tvOS, and visionOS, all in version 26.1. The root cause of the vulnerability is improper memory management when handling certain web content, which can be exploited to corrupt memory and disrupt normal processing.
Users can update to Safari 26.1, which is available on macOS Sonoma and Sequoia, as well as on iOS 26.1, iPadOS 26.1, watchOS 26.1, tvOS 26.1, and visionOS 26.1.
Metrics
CVSS 4.0 Severity and Vector Strings:
No CVSS 4.0 data is available for this CVE.
CVSS 3.x Severity and Vector Strings:
No data available for CVSS Version 2.0 on this CVE.
CISA-ADP
Assessed Nov 5, 2025References to Advisories, Solutions, and Tools
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Weakness Enumeration
| CWE-ID | CWE Name | Source |
|---|---|---|
| CWE-787 | Out-of-bounds Write | [email protected] |
| CWE-119 | Improper Restriction of Operations within the Bounds of a Memory Buffer | CISA-ADP |
| CWE-120 | Buffer Copy without Checking Size of Input ('Classic Buffer Overflow') | redhat-SADP |
Affected Products
| Product | Versions |
|---|---|
| apple safari | < 26.1 |
CPE
Remediation
| |
| apple ipados | < 26.1 |
CPE
Remediation
| |
| apple iphone os | < 26.1 |
CPE
Remediation
| |
| apple tvos | < 26.1 |
CPE
Remediation
| |
| apple visionos | < 26.1 |
CPE
Remediation
| |
| apple watchos | < 26.1 |
CPE
Remediation
| |
Change History
12 change records found show changes
| Date | Action | Recorded By |
|---|---|---|
| Aug 14, 2026 | CVE Modified | redhat-SADP |
| Jul 15, 2026 | CVE Modified | redhat-SADP |
| Jun 30, 2026 | CVE Modified | redhat-SADP |
| Jun 17, 2026 | CVE Modified | [email protected] |
| Jun 17, 2026 | CVE Modified | CISA-ADP |
| Apr 2, 2026 | CVE Modified | [email protected] |
| Dec 17, 2025 | CVE Modified | [email protected] |
| Dec 1, 2025 | CVE Modified | CISA-ADP |
| Nov 5, 2025 | CVE Modified | [email protected] |
| Nov 5, 2025 | Initial Analysis | [email protected] |
| Nov 4, 2025 | CVE Modified | CISA-ADP |
| Nov 4, 2025 | New CVE Received | [email protected] |