CVE-2026-43745: Processing maliciously crafted web content may lead to an unexpected Safari crash in Apple Safari
An out-of-bounds write issue was addressed with improved input validation. This issue is fixed in Safari 26.5.2, iOS 26.5.2 and iPadOS 26.5.2, macOS Tahoe 26.5.2, tvOS 26.6, visionOS 26.6, watchOS 26.6. Processing maliciously crafted web content may lead to an unexpected Safari crash.
AI Analysis
Technical Summary
This vulnerability (CVE-2026-43745) involves an out-of-bounds write in Apple Safari caused by insufficient input validation when processing certain web content. Successful exploitation can lead to an unexpected crash of the Safari browser, impacting availability. Apple addressed this issue by improving input validation and released fixes in Safari 26.5.2 and corresponding updates for iOS, iPadOS, macOS Tahoe, tvOS, visionOS, and watchOS. The CVSS v3.1 base score is 6.5 (medium severity), with an attack vector of network, low attack complexity, no privileges required, user interaction required, unchanged scope, and impact limited to availability.
Potential Impact
The vulnerability can cause Safari to crash unexpectedly, resulting in denial of service (availability impact). There is no impact on confidentiality or integrity. No known exploits are reported in the wild at this time.
Mitigation Recommendations
A fix is available in Safari 26.5.2 and corresponding updates for iOS 26.5.2, iPadOS 26.5.2, macOS Tahoe 26.5.2, tvOS 26.6, visionOS 26.6, and watchOS 26.6. Users and administrators should update affected Apple software to these versions or later to remediate the vulnerability.
CVE-2026-43745: Processing maliciously crafted web content may lead to an unexpected Safari crash in Apple Safari
Description
An out-of-bounds write issue was addressed with improved input validation. This issue is fixed in Safari 26.5.2, iOS 26.5.2 and iPadOS 26.5.2, macOS Tahoe 26.5.2, tvOS 26.6, visionOS 26.6, watchOS 26.6. Processing maliciously crafted web content may lead to an unexpected Safari crash.
CVSS v3.1
Score 6.5medium
Affected software
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This vulnerability (CVE-2026-43745) involves an out-of-bounds write in Apple Safari caused by insufficient input validation when processing certain web content. Successful exploitation can lead to an unexpected crash of the Safari browser, impacting availability. Apple addressed this issue by improving input validation and released fixes in Safari 26.5.2 and corresponding updates for iOS, iPadOS, macOS Tahoe, tvOS, visionOS, and watchOS. The CVSS v3.1 base score is 6.5 (medium severity), with an attack vector of network, low attack complexity, no privileges required, user interaction required, unchanged scope, and impact limited to availability.
Potential Impact
The vulnerability can cause Safari to crash unexpectedly, resulting in denial of service (availability impact). There is no impact on confidentiality or integrity. No known exploits are reported in the wild at this time.
Mitigation Recommendations
A fix is available in Safari 26.5.2 and corresponding updates for iOS 26.5.2, iPadOS 26.5.2, macOS Tahoe 26.5.2, tvOS 26.6, visionOS 26.6, and watchOS 26.6. Users and administrators should update affected Apple software to these versions or later to remediate the vulnerability.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- apple
- Date Reserved
- 2026-05-01T22:46:21.647Z
- Cvss Version
- null
- State
- PUBLISHED
- Remediation Level
- null
Threat ID: 6a42d3d527e9c7971972d1b1
Added to database: 06/29/2026, 20:21:41 UTC
Last enriched: 07/30/2026, 00:58:10 UTC
Last updated: 08/12/2026, 00:41:12 UTC
Views: 97
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