CVE-2025-43342

Name: CVE-2025-43342
Creator: NVD / NIST
Published: 2025-09-15T23:15:36.483+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

CRITICALCVSS 9.8/10EPSS 0.69%

Last modified Jun 17, 2026

CVE-2025-43342 is a critical-severity vulnerability rated 9.8/10 on the CVSS scale. A correctness issue was addressed with improved checks. This issue is fixed in Safari 26, iOS 18.7 and iPadOS 18.7, iOS 26 and iPadOS 26, macOS Tahoe 26, tvOS 26, visionOS 26, watchOS 26. EPSS estimates a 0.69% chance of exploitation in the next 30 days.

Description

A correctness issue was addressed with improved checks. This issue is fixed in Safari 26, iOS 18.7 and iPadOS 18.7, 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.

Metrics

CVSS 3.1

9.8/10

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

EPSS Probability

0.69%

48.1th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-20

Affected Software

Vendor	Product	Versions
Apple	Safari	< 26.0
Apple	Ipados	< 18.7
Apple	Iphone Os	< 18.7
Apple	Macos	< 26.0
Apple	Tvos	< 26.0
Apple	Visionos	< 26.0
Apple	Watchos	< 26.0
Webkitgtk	Webkitgtk	< 2.48.7
Wpewebkit	Wpe Webkit	< 2.48.7

References

https://support.apple.com/en-us/125108Release Notes, Vendor Advisory
https://support.apple.com/en-us/125109Release Notes, Vendor Advisory
https://support.apple.com/en-us/125110
https://support.apple.com/en-us/125113Release Notes, Vendor Advisory
https://support.apple.com/en-us/125114Release Notes, Vendor Advisory
https://support.apple.com/en-us/125115Release Notes, Vendor Advisory
https://support.apple.com/en-us/125116Release Notes, Vendor Advisory
http://seclists.org/fulldisclosure/2025/Sep/49Mailing List, Third Party Advisory
http://seclists.org/fulldisclosure/2025/Sep/53Mailing List, Third Party Advisory
http://seclists.org/fulldisclosure/2025/Sep/57Mailing List, Third Party Advisory
http://seclists.org/fulldisclosure/2025/Sep/59Mailing List, Third Party Advisory
http://www.openwall.com/lists/oss-security/2025/09/22/3Mailing List, Third Party Advisory

Timeline

Published: Sep 15, 2025
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2025-43342?

How severe is CVE-2025-43342?

CVE-2025-43342 has a CVSS score of 9.8/10 (CRITICAL severity). The EPSS model estimates a 0.69% probability of exploitation in the next 30 days.

How do I fix CVE-2025-43342?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2025-43342?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST