CVE-2025-43440: Processing maliciously crafted web content may lead to an unexpected process crash in Apple Safari
A vulnerability in Apple Safari prior to version 26.1 allows processing of maliciously crafted web content that may cause an unexpected process crash. This issue affects Safari on multiple Apple platforms including iOS, iPadOS, macOS Tahoe, tvOS, visionOS, and watchOS. The vulnerability has been addressed with improved checks in Safari 26.1 and corresponding OS versions.
AI Analysis
Technical Summary
CVE-2025-43440 is a medium severity vulnerability in Apple Safari where processing maliciously crafted web content can lead to an unexpected process crash. The issue is related to improper handling of web content, classified under CWE-79 (Cross-site Scripting). Apple fixed this vulnerability by implementing improved checks in Safari 26.1 and related OS versions. No known exploits are reported in the wild.
Potential Impact
Successful exploitation causes an unexpected process crash, resulting in denial of service for the affected Safari process. There is no impact on confidentiality or integrity according to the CVSS vector (Confidentiality: None, Integrity: None, Availability: High).
Mitigation Recommendations
Apple has released an official fix in Safari 26.1 and corresponding OS updates (iOS 26.1, iPadOS 26.1, macOS Tahoe 26.1, tvOS 26.1, visionOS 26.1, watchOS 26.1). Users and administrators should update to these versions to remediate the vulnerability. Patch status is confirmed fixed in these versions.
CVE-2025-43440: Processing maliciously crafted web content may lead to an unexpected process crash in Apple Safari
Description
A vulnerability in Apple Safari prior to version 26.1 allows processing of maliciously crafted web content that may cause an unexpected process crash. This issue affects Safari on multiple Apple platforms including iOS, iPadOS, macOS Tahoe, tvOS, visionOS, and watchOS. The vulnerability has been addressed with improved checks in Safari 26.1 and corresponding OS versions.
CVSS v3.1
Score 6.5medium
Affected software
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Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
CVE-2025-43440 is a medium severity vulnerability in Apple Safari where processing maliciously crafted web content can lead to an unexpected process crash. The issue is related to improper handling of web content, classified under CWE-79 (Cross-site Scripting). Apple fixed this vulnerability by implementing improved checks in Safari 26.1 and related OS versions. No known exploits are reported in the wild.
Potential Impact
Successful exploitation causes an unexpected process crash, resulting in denial of service for the affected Safari process. There is no impact on confidentiality or integrity according to the CVSS vector (Confidentiality: None, Integrity: None, Availability: High).
Mitigation Recommendations
Apple has released an official fix in Safari 26.1 and corresponding OS updates (iOS 26.1, iPadOS 26.1, macOS Tahoe 26.1, tvOS 26.1, visionOS 26.1, watchOS 26.1). Users and administrators should update to these versions to remediate the vulnerability. Patch status is confirmed fixed in these versions.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- apple
- Date Reserved
- 2025-04-16T15:24:37.125Z
- State
- PUBLISHED
Threat ID: 69095bae78d4f574c2a8f3f3
Added to database: 11/04/2025, 01:49:34 UTC
Last enriched: 08/12/2026, 15:40:05 UTC
Last updated: 09/10/2026, 19:36:50 UTC
Views: 98
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