VulnerabilityModified

CVE-2025-43343

Processing maliciously crafted web content may lead to an unexpected process crash.

CRITICAL 9.8EPSS 0.77%

Does this matter?

High impact if exploited, but EPSS currently rates exploitation as unlikely (0.77%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.

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 3.1: 9.8 CRITICALCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
EPSS: 0.77% probability · 54th percentile
CISA KEV: Not listed
Weakness: CWE-119
Affected: apple/safari · apple/ipados · apple/iphone os · apple/macos · apple/tvos · apple/visionos · apple/watchos · webkitgtk/webkitgtk · wpewebkit/wpe webkit
Source: product-security@apple.com

References

https://support.apple.com/en-us/125108Release 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/2025/10/13/4Mailing List, Third Party Advisory
https://access.redhat.com/errata/RHSA-2025:19946
https://security-tracker.debian.org/tracker/CVE-2025-43343
https://ubuntu.com/security/CVE-2025-43343
https://webkitgtk.org/security/WSA-2025-0007.html

Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.