CVE-2025-30427: 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 18.4, iOS 18.4 and iPadOS 18.4, iPadOS 17.7.6, macOS Sequoia 15.4, tvOS 18.4, visionOS 2.4, watchOS 11.4. Processing maliciously crafted web content may lead to an unexpected Safari crash.
AI Analysis
Technical Summary
This vulnerability is a use-after-free issue in Apple Safari that can be triggered by processing maliciously crafted web content, leading to an unexpected crash of the browser. The flaw was addressed by Apple through improved memory management. The fix is included in Safari 18.4 and related OS versions such as iOS 18.4, iPadOS 18.4 and 17.7.6, macOS Sequoia 15.4, tvOS 18.4, visionOS 2.4, and watchOS 11.4. The CVSS v3.1 base score is 4.3, indicating medium severity with network attack vector, low attack complexity, no privileges required, user interaction required, and impact limited to availability loss.
Potential Impact
Exploitation of this vulnerability may cause Safari to crash unexpectedly, resulting in denial of service for the user. There is no indication of confidentiality or integrity impact. The crash occurs when processing specially crafted web content, potentially disrupting user browsing sessions.
Mitigation Recommendations
A fix is available and included in Safari 18.4 and the specified OS updates (iOS 18.4, iPadOS 18.4 and 17.7.6, macOS Sequoia 15.4, tvOS 18.4, visionOS 2.4, watchOS 11.4). Users and administrators should update to these versions to remediate the vulnerability. No additional mitigations are specified or required beyond applying the official updates.
CVE-2025-30427: 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 18.4, iOS 18.4 and iPadOS 18.4, iPadOS 17.7.6, macOS Sequoia 15.4, tvOS 18.4, visionOS 2.4, watchOS 11.4. Processing maliciously crafted web content may lead to an unexpected Safari crash.
CVSS v3.1
Score 4.3medium
Affected software
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This vulnerability is a use-after-free issue in Apple Safari that can be triggered by processing maliciously crafted web content, leading to an unexpected crash of the browser. The flaw was addressed by Apple through improved memory management. The fix is included in Safari 18.4 and related OS versions such as iOS 18.4, iPadOS 18.4 and 17.7.6, macOS Sequoia 15.4, tvOS 18.4, visionOS 2.4, and watchOS 11.4. The CVSS v3.1 base score is 4.3, indicating medium severity with network attack vector, low attack complexity, no privileges required, user interaction required, and impact limited to availability loss.
Potential Impact
Exploitation of this vulnerability may cause Safari to crash unexpectedly, resulting in denial of service for the user. There is no indication of confidentiality or integrity impact. The crash occurs when processing specially crafted web content, potentially disrupting user browsing sessions.
Mitigation Recommendations
A fix is available and included in Safari 18.4 and the specified OS updates (iOS 18.4, iPadOS 18.4 and 17.7.6, macOS Sequoia 15.4, tvOS 18.4, visionOS 2.4, watchOS 11.4). Users and administrators should update to these versions to remediate the vulnerability. No additional mitigations are specified or required beyond applying the official updates.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- apple
- Date Reserved
- 2025-03-22T00:04:43.716Z
- Cvss Version
- 3.1
- State
- PUBLISHED
Threat ID: 69091543c28fd46ded7bb322
Added to database: 11/03/2025, 20:49:07 UTC
Last enriched: 07/23/2026, 21:11:03 UTC
Last updated: 09/10/2026, 19:36:50 UTC
Views: 119
Community Reviews
0 reviewsCrowdsource mitigation strategies, share intel context, and vote on the most helpful responses. Sign in to add your voice and help keep defenders ahead.
Want to contribute mitigation steps or threat intel context? Sign in or create an account to join the community discussion.
Actions
Updates to AI analysis require Pro Console access. Upgrade inside Console → Billing.
Need more coverage?
Upgrade to Pro Console for AI refresh and higher limits.
For incident response and remediation, OffSeq services can help resolve threats faster.
Latest Threats
Check if your credentials are on the dark web
Instant breach scanning across billions of leaked records. Free tier available.