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Safari CVE-2025-43536

MEDIUM
Use After Free (CWE-416)
2025-12-17 product-security@apple.com
Apple Safari iOS macOS Use After Free Denial Of Service Ipados Iphone Os Red Hat Suse
4.3
CVSS 3.1 · NVD
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Severity by source

NVD PRIMARY
4.3 MEDIUM
AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:L
SUSE
MEDIUM
qualitative
Red Hat
8.8 HIGH
qualitative

Primary rating from NVD.

CVSS VectorNVD

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:L
Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
Required
Scope
Unchanged
Confidentiality
None
Integrity
None
Availability
Low

Lifecycle Timeline

3
Patch released
Apr 06, 2026 - 08:30 nvd
Patch available
Analysis Generated
Apr 02, 2026 - 19:37 vuln.today
CVE Published
Dec 17, 2025 - 21:16 nvd
MEDIUM 4.3

DescriptionCVE.org

A use-after-free issue was addressed with improved memory management. This issue is fixed in Safari 26.2, iOS 18.7.3 and iPadOS 18.7.3, iOS 26.2 and iPadOS 26.2, macOS Tahoe 26.2. Processing maliciously crafted web content may lead to an unexpected process crash.

AnalysisAI

Use-after-free memory corruption in Apple's WebKit rendering engine allows remote attackers to crash Safari and iOS/iPadOS applications by processing maliciously crafted web content, requiring only user interaction (page visit) and no authentication. The vulnerability affects Safari 26.2, iOS 18.7.3 and iOS 26.2, iPadOS 18.7.3 and iPadOS 26.2, and macOS Tahoe 26.2 and earlier versions. With an EPSS score of 0.06% and no public exploit confirmed, this represents a low real-world exploitation priority despite the moderate CVSS 4.3 severity rating, with impact limited to denial of service through process termination.

Technical ContextAI

The vulnerability stems from a use-after-free condition (CWE-416) in WebKit, Apple's rendering engine shared across Safari, iOS Safari, and other bundled web-based applications. Use-after-free occurs when memory is accessed after it has been freed, leading to potential memory corruption. In this case, improved memory management was implemented to prevent premature deallocation of web content resources during processing. The vulnerability affects all major Apple platforms via their CPE identifiers: Apple Safari (cpe:2.3:a:apple:safari), iPhone OS (cpe:2.3:o:apple:iphone_os), iPadOS (cpe:2.3:o:apple:ipados), and macOS (cpe:2.3:o:apple:macos). The attack vector requires network access to serve or deliver malicious web content, and the user interaction requirement (UI:R in CVSS vector) mandates that a user visit or interact with the malicious page to trigger the memory corruption.

RemediationAI

Vendor-released patches are available: update Safari to version 26.2 or later, iOS to version 18.7.3 or later or iOS 26.2 or later, iPadOS to version 18.7.3 or later or iPadOS 26.2 or later, and macOS to Tahoe 26.2 or later. Users should enable automatic security updates where possible, or manually update through Settings > General > Software Update on iOS/iPadOS and System Settings > General > Software Update on macOS. For Safari users on macOS, updates are bundled with macOS system updates. No workarounds are documented; patching is the primary remediation path. Refer to the official Apple security advisories at https://support.apple.com/en-us/125884, https://support.apple.com/en-us/125885, https://support.apple.com/en-us/125886, and https://support.apple.com/en-us/125892 for device-specific guidance.

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Same weakness CWE-416 – Use After Free

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CVE-2019-0708 CRITICAL POC
9.8
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9.8
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8.8
CVE-2009-4324 HIGH POC
7.8
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9.8
CVE-2015-5122 CRITICAL POC
9.8
CVE-2013-2551 HIGH POC
8.8

Same technique Use After Free

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CVE-2015-5119 CRITICAL POC
9.8
CVE-2014-0322 HIGH POC
8.8
CVE-2012-4792 HIGH POC
8.8
CVE-2009-4324 HIGH POC
7.8
CVE-2015-0313 CRITICAL POC
9.8
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9.8
CVE-2013-2551 HIGH POC
8.8
CVE-2012-4969 HIGH POC
8.1

Vendor StatusVendor

SUSE

Severity: Medium
Product Status
Container suse/sl-micro/6.0/baremetal-os-container:latest Container suse/sl-micro/6.0/base-os-container:latest Container suse/sl-micro/6.0/toolbox:latest Container suse/sl-micro/6.1/baremetal-os-container:2.2.1-7.2 Container suse/sl-micro/6.1/base-os-container:2.2.0-4.55 Image SL-Micro Image SL-Micro-Azure Image SL-Micro-BYOS-Azure Image SL-Micro-BYOS-EC2 Image SL-Micro-BYOS-GCE Image SL-Micro-Base Image SL-Micro-Base-RT Image SL-Micro-Base-RT-SelfInstall Image SL-Micro-Base-RT-encrypted Image SL-Micro-Base-SelfInstall Image SL-Micro-Base-encrypted Image SL-Micro-Base-qcow Image SL-Micro-Default Image SL-Micro-Default-SelfInstall Image SL-Micro-Default-encrypted Image SL-Micro-Default-qcow Image SL-Micro-EC2 Image SLE-Micro Image SLE-Micro-Azure Image SLE-Micro-BYOS Image SLE-Micro-BYOS-Azure Image SLE-Micro-BYOS-EC2 Image SLE-Micro-BYOS-GCE Image SLE-Micro-EC2 Image SLE-Micro-GCE Image SUSE-Multi-Linux-Manager-Proxy-BYOS-Azure Image SUSE-Multi-Linux-Manager-Proxy-BYOS-EC2 Image SUSE-Multi-Linux-Manager-Proxy-BYOS-GCE Image SUSE-Multi-Linux-Manager-Server-Azure-llc Image SUSE-Multi-Linux-Manager-Server-Azure-ltd Image SUSE-Multi-Linux-Manager-Server-BYOS-Azure Image SUSE-Multi-Linux-Manager-Server-BYOS-EC2 Image SUSE-Multi-Linux-Manager-Server-BYOS-GCE Image SUSE-Multi-Linux-Manager-Server-EC2-llc Image SUSE-Multi-Linux-Manager-Server-EC2-ltd Affected
SUSE Liberty Linux 8 Fixed
SUSE Liberty Linux 9 Fixed
SUSE Linux Enterprise Desktop 15 SP6 SUSE Linux Enterprise High Performance Computing 15 SP6 SUSE Linux Enterprise Server 15 SP6 Fixed
SUSE Linux Enterprise Desktop 15 SP7 SUSE Linux Enterprise High Performance Computing 15 SP7 SUSE Linux Enterprise Server 15 SP7 SUSE Linux Enterprise Server for SAP Applications 15 SP7 Fixed

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CVE-2025-43536 vulnerability details – vuln.today
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