Is CVE-2025-43343 actively exploited?

CVE-2025-43343 has no public evidence of in-the-wild exploitation as of 2026-04-02.

What is the CVSS score for CVE-2025-43343?

CVE-2025-43343 has a CVSS score of 9.8 (CRITICAL severity). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

How do I patch CVE-2025-43343?

Patch guidance is available from apple security advisories. CVEDatabase generates AI-assisted remediation guidance on demand for CVE-2025-43343.

Fix CVE-2025-43343 - CRITICAL apple safari

Q: Which products are affected by CVE-2025-43343?

9 products: apple safari, apple ipados, apple iphone os, apple macos, apple tvos, and 4 more.

Description

The issue was addressed with improved memory handling. This issue is fixed in Safari 26, iOS 26 and iPadOS 26, macOS Tahoe 26, tvOS 26, visionOS 26, watchOS 26. Processing maliciously crafted web content may lead to an unexpected process crash.

CVSS Metrics

Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Attack Vector: network
Complexity: low
Privileges: none
User Action: none
Scope: unchanged
Confidentiality: high
Integrity: high
Availability: high
Weaknesses: CWE-119 · Memory Buffer Errors

Metadata

Primary Vendor: APPLE
Published: 9/15/2025
Last Modified: 4/2/2026
Source: NIST NVD
Note: Verify all details with official vendor sources before applying patches.

Affected Products

apple : safariapple : ipadosapple : iphone_osapple : macosapple : tvosapple : visionosapple : watchoswebkitgtk : webkitgtkwpewebkit : wpe_webkit

Remediation Guidance

Executive Summary

View on NIST NVD