CVE-2025-43457: Processing maliciously crafted web content may lead to an unexpected Safari crash in Apple Safari
A use-after-free issue was addressed with improved memory management. This issue is fixed in Safari 26.1, 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.
AI Analysis
Technical Summary
This vulnerability (CVE-2025-43457) is a use-after-free flaw in Apple Safari's web content processing, which can lead to an unexpected crash of the browser. The issue was resolved by Apple through improved memory management and is fixed in Safari 26.1, iOS 26.1, iPadOS 26.1, macOS Tahoe 26.1, visionOS 26.1, and watchOS 26.1. The CVSS 3.1 base score is 6.5 with vector AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H, indicating network attack vector, low attack complexity, no privileges required, user interaction required, unchanged scope, no confidentiality or integrity impact, and high impact on availability. Red Hat has issued security advisories and patches for webkitgtk4 packages addressing this and related vulnerabilities. The vulnerability affects Safari versions prior to 26.1.
Potential Impact
Successful exploitation of this vulnerability may cause Safari to crash unexpectedly, resulting in denial of service (availability impact). There is no impact on confidentiality or integrity according to the CVSS vector. No known exploits in the wild have been reported.
Mitigation Recommendations
A fix is available and has been released by Apple in Safari 26.1 and corresponding OS updates (iOS 26.1, iPadOS 26.1, macOS Tahoe 26.1, visionOS 26.1, watchOS 26.1). Users and administrators should update to these versions to remediate the vulnerability. Red Hat has also released updated webkitgtk4 packages for affected Red Hat Enterprise Linux versions. Applying these official patches is the recommended mitigation.
CVE-2025-43457: Processing maliciously crafted web content may lead to an unexpected Safari crash in Apple Safari
Description
A use-after-free issue was addressed with improved memory management. This issue is fixed in Safari 26.1, 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.
CVSS v3.1
Score 6.5medium
Affected software
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Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This vulnerability (CVE-2025-43457) is a use-after-free flaw in Apple Safari's web content processing, which can lead to an unexpected crash of the browser. The issue was resolved by Apple through improved memory management and is fixed in Safari 26.1, iOS 26.1, iPadOS 26.1, macOS Tahoe 26.1, visionOS 26.1, and watchOS 26.1. The CVSS 3.1 base score is 6.5 with vector AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H, indicating network attack vector, low attack complexity, no privileges required, user interaction required, unchanged scope, no confidentiality or integrity impact, and high impact on availability. Red Hat has issued security advisories and patches for webkitgtk4 packages addressing this and related vulnerabilities. The vulnerability affects Safari versions prior to 26.1.
Potential Impact
Successful exploitation of this vulnerability may cause Safari to crash unexpectedly, resulting in denial of service (availability impact). There is no impact on confidentiality or integrity according to the CVSS vector. No known exploits in the wild have been reported.
Mitigation Recommendations
A fix is available and has been released by Apple in Safari 26.1 and corresponding OS updates (iOS 26.1, iPadOS 26.1, macOS Tahoe 26.1, visionOS 26.1, watchOS 26.1). Users and administrators should update to these versions to remediate the vulnerability. Red Hat has also released updated webkitgtk4 packages for affected Red Hat Enterprise Linux versions. Applying these official patches is the recommended mitigation.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- apple
- Date Reserved
- 2025-04-16T15:24:37.125Z
- State
- PUBLISHED
- Vendor Advisory Urls
- [{"url":"https://access.redhat.com/security/cve/CVE-2025-43457","vendor":"Red Hat"},{"url":"https://access.redhat.com/errata/RHSA-2026:22136","vendor":"Red Hat"},{"url":"https://access.redhat.com/errata/RHSA-2026:10702","vendor":"Red Hat"},{"url":"https://access.redhat.com/errata/RHSA-2026:16056","vendor":"Red Hat"},{"url":"https://access.redhat.com/errata/RHSA-2026:13845","vendor":"Red Hat"},{"url":"https://access.redhat.com/errata/RHSA-2026:11814","vendor":"Red Hat"},{"url":"https://access.redhat.com/errata/RHSA-2026:19535","vendor":"Red Hat"},{"url":"https://access.redhat.com/errata/RHSA-2026:16695","vendor":"Red Hat"},{"url":"https://access.redhat.com/errata/RHSA-2026:14659","vendor":"Red Hat"},{"url":"https://access.redhat.com/errata/RHSA-2026:11329","vendor":"Red Hat"},{"url":"https://access.redhat.com/errata/RHSA-2026:9692","vendor":"Red Hat"},{"url":"https://access.redhat.com/errata/RHSA-2026:19206","vendor":"Red Hat"}]
Threat ID: 69095bb078d4f574c2a8f451
Added to database: 11/04/2025, 01:49:36 UTC
Last enriched: 07/15/2026, 08:19:07 UTC
Last updated: 09/10/2026, 19:24:56 UTC
Views: 113
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