How to fix CVE-2025-43438?

During next maintenance window: Identify affected systems and apply vendor patches when convenient. Monitor vendor channels for patch availability.

Is Memory Corruption affected by CVE-2025-43438?

Organizations using A use-after-free should be aware of moderate risk from CVE-2025-43438, a use-after-free vulnerability rated CVSS 4.3. Exploitation could compromise the security of affected deployments. Organizations should apply vendor updates when available and monitor for exploitation.

CVE-2025-43438

MEDIUM

2025-11-04 [email protected]

4.3

CVSS 3.1

CVSS Vector

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

Patch Released

Apr 06, 2026 - 08:30 nvd

Patch available

Analysis Generated

Mar 28, 2026 - 19:20 vuln.today

CVE Published

Nov 04, 2025 - 02:15 nvd

MEDIUM 4.3

Description

A use-after-free issue was addressed with improved memory management. This issue is fixed in watchOS 26.1, macOS Tahoe 26.1, iOS 26.1 and iPadOS 26.1, Safari 26.1, iOS 18.7.2 and iPadOS 18.7.2, visionOS 26.1. Processing maliciously crafted web content may lead to an unexpected Safari crash.

Analysis

A use-after-free issue was addressed with improved memory management. Rated medium severity (CVSS 4.3), this vulnerability is remotely exploitable, no authentication required, low attack complexity. No vendor patch available.

Technical Context

This vulnerability is classified as Use After Free (CWE-416), which allows attackers to access freed memory to execute arbitrary code or crash the application. A use-after-free issue was addressed with improved memory management. This issue is fixed in watchOS 26.1, macOS Tahoe 26.1, iOS 26.1 and iPadOS 26.1, Safari 26.1, iOS 18.7.2 and iPadOS 18.7.2, visionOS 26.1. Processing maliciously crafted web content may lead to an unexpected Safari crash. Affected products include: Apple Safari, Apple Ipados, Apple Iphone Os, Apple Visionos, Apple Watchos.

Affected Products

Apple Safari, Apple Ipados, Apple Iphone Os, Apple Visionos, Apple Watchos.

Remediation

No vendor patch is available at time of analysis. Monitor vendor advisories for updates. Use smart pointers or garbage-collected languages. Set pointers to NULL after freeing. Enable memory sanitizers.

Priority Score

Low Medium High Critical

KEV: 0

EPSS: +0.1

CVSS: +22

POC: 0

Vendor Status

CVE-2025-43438 vulnerability details – vuln.today

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CVE-2025-43438

CVSS Vector

Lifecycle Timeline

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Analysis

Technical Context

Affected Products

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CVE-2025-43438

CVSS Vector

Lifecycle Timeline

Tags

Description

Analysis

Technical Context

Affected Products

Remediation

Priority Score

Vendor Status

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External POC / Exploit Code