CVE-2025-43433
published 2025-11-04CVE-2025-43433: The issue was addressed with improved memory handling. This issue is fixed in Safari 26.1, iOS 18.7.2 and iPadOS 18.7.2, iOS 26.1 and iPadOS 26.1, macOS Tahoe…
PriorityP348high8.8CVSS 3.1
AVNACLPRNUIRSUCHIHAH
EPSS
1.10%
63.4th percentile
The issue was addressed with improved memory handling. This issue is fixed in Safari 26.1, iOS 18.7.2 and iPadOS 18.7.2, iOS 26.1 and iPadOS 26.1, macOS Tahoe 26.1, tvOS 26.1, visionOS 26.1, watchOS 26.1. Processing maliciously crafted web content may lead to memory corruption.
Affected
18 ranges
| Vendor | Product | Version range | Fixed in |
|---|---|---|---|
| apple | ios_18.7.2_and_ipados | — | — |
| apple | ios_26.1_and_ipados | — | — |
| apple | ios_and_ipados | < 18.7.2 | 18.7.2 |
| apple | ios_and_ipados | < 26.1 | 26.1 |
| apple | ipados | < 26.1 | 26.1 |
| apple | iphone_os | < 26.1 | 26.1 |
| apple | macos | < 26.1 | 26.1 |
| apple | macos_tahoe | — | — |
| apple | safari | < 26.1 | 26.1 |
| apple | safari | — | — |
| apple | tvos | < 26.1 | 26.1 |
| apple | tvos | — | — |
| apple | visionos | < 26.1 | 26.1 |
| apple | visionos | — | — |
| apple | watchos | < 26.1 | 26.1 |
| apple | watchos | — | — |
| debian | webkit2gtk | < webkit2gtk 2.50.2-1~deb12u1 (bookworm) | webkit2gtk 2.50.2-1~deb12u1 (bookworm) |
| debian | wpewebkit | < webkit2gtk 2.50.2-1~deb12u1 (bookworm) | webkit2gtk 2.50.2-1~deb12u1 (bookworm) |
CVSS provenance
nvdv3.18.8HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
osv8.8HIGH
vendor_debian8.8HIGH
vendor_redhat8.8HIGH
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GHSA
GHSA-7mgf-w3jg-xvr7: The issue was addressed with improved memory handling
ghsa_unreviewed·2025-11-04
CVE-2025-43433 [HIGH] CWE-119 GHSA-7mgf-w3jg-xvr7: The issue was addressed with improved memory handling
The issue was addressed with improved memory handling. This issue is fixed in Safari 26.1, visionOS 26.1, watchOS 26.1, iOS 26.1 and iPadOS 26.1, tvOS 26.1. Processing maliciously crafted web content may lead to memory corruption.
OSV
CVE-2025-43433: The issue was addressed with improved memory handling
osv·2025-11-04·CVSS 8.8
CVE-2025-43433 [HIGH] CVE-2025-43433: The issue was addressed with improved memory handling
The issue was addressed with improved memory handling. This issue is fixed in Safari 26.1, iOS 18.7.2 and iPadOS 18.7.2, iOS 26.1 and iPadOS 26.1, macOS Tahoe 26.1, tvOS 26.1, visionOS 26.1, watchOS 26.1. Processing maliciously crafted web content may lead to memory corruption.
OSV
CVE-2025-43433: The issue was addressed with improved memory handling
osv·2025-11-04·CVSS 8.8
CVE-2025-43433 [HIGH] CVE-2025-43433: The issue was addressed with improved memory handling
The issue was addressed with improved memory handling. This issue is fixed in tvOS 26.1, 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 memory corruption.
Red Hat
webkitgtk: Processing maliciously crafted web content may lead to memory corruption
vendor_redhat·2026-03-18·CVSS 8.8
CVE-2025-43433 [HIGH] CWE-120 webkitgtk: Processing maliciously crafted web content may lead to memory corruption
webkitgtk: Processing maliciously crafted web content may lead to memory corruption
The issue was addressed with improved memory handling. This issue is fixed in Safari 26.1, iOS 18.7.2 and iPadOS 18.7.2, iOS 26.1 and iPadOS 26.1, macOS Tahoe 26.1, tvOS 26.1, visionOS 26.1, watchOS 26.1. Processing maliciously crafted web content may lead to memory corruption.
A flaw was found in WebKitGTK. Processing malicious web content can cause memory corruption due to improper memory handling.
Statement: To exploit this issue, an attacker needs to trick a user into processing or loading malicious web content. Due to this reason, this flaw has been rated with an important severity.
Additionally, this issue can cause memory corruption and the possibility of remote code execution is not discarded.
M
Apple
CVE-2025-43433: iOS 18.7.2 and iPadOS 18.7.2
vendor_apple·2025-11-05·CVSS 8.8
CVE-2025-43433 [HIGH] CVE-2025-43433: iOS 18.7.2 and iPadOS 18.7.2
Apple Security Update: About the security content of iOS 18.7.2 and iPadOS 18.7.2
Product: iOS 18.7.2 and iPadOS
Version: 18.7.2
CVE: CVE-2025-43433
Component: WebKit
Impact: Processing maliciously crafted web content may lead to memory corruption
Description: The issue was addressed with improved memory handling.
Apple
CVE-2025-43433: watchOS 26.1
vendor_apple·2025-11-03·CVSS 8.8
CVE-2025-43433 [HIGH] CVE-2025-43433: watchOS 26.1
Apple Security Update: About the security content of watchOS 26.1
Product: watchOS
Version: 26.1
CVE: CVE-2025-43433
Component: WebKit
Impact: Processing maliciously crafted web content may lead to memory corruption
Description: The issue was addressed with improved memory handling.
Apple
CVE-2025-43433: macOS Tahoe 26.1
vendor_apple·2025-11-03·CVSS 8.8
CVE-2025-43433 [HIGH] CVE-2025-43433: macOS Tahoe 26.1
Apple Security Update: About the security content of macOS Tahoe 26.1
Product: macOS Tahoe
Version: 26.1
CVE: CVE-2025-43433
Component: WebKit
Impact: Processing maliciously crafted web content may lead to memory corruption
Description: The issue was addressed with improved memory handling.
Apple
CVE-2025-43433: visionOS 26.1
vendor_apple·2025-11-03·CVSS 8.8
CVE-2025-43433 [HIGH] CVE-2025-43433: visionOS 26.1
Apple Security Update: About the security content of visionOS 26.1
Product: visionOS
Version: 26.1
CVE: CVE-2025-43433
Component: WebKit
Impact: Processing maliciously crafted web content may lead to memory corruption
Description: The issue was addressed with improved memory handling.
Apple
CVE-2025-43433: tvOS 26.1
vendor_apple·2025-11-03·CVSS 8.8
CVE-2025-43433 [HIGH] CVE-2025-43433: tvOS 26.1
Apple Security Update: About the security content of tvOS 26.1
Product: tvOS
Version: 26.1
CVE: CVE-2025-43433
Component: WebKit
Impact: Processing maliciously crafted web content may lead to memory corruption
Description: The issue was addressed with improved memory handling.
Apple
CVE-2025-43433: iOS 26.1 and iPadOS 26.1
vendor_apple·2025-11-03·CVSS 8.8
CVE-2025-43433 [HIGH] CVE-2025-43433: iOS 26.1 and iPadOS 26.1
Apple Security Update: About the security content of iOS 26.1 and iPadOS 26.1
Product: iOS 26.1 and iPadOS
Version: 26.1
CVE: CVE-2025-43433
Component: WebKit
Impact: Processing maliciously crafted web content may lead to memory corruption
Description: The issue was addressed with improved memory handling.
Apple
CVE-2025-43433: Safari 26.1
vendor_apple·2025-11-03·CVSS 8.8
CVE-2025-43433 [HIGH] CVE-2025-43433: Safari 26.1
Apple Security Update: About the security content of Safari 26.1
Product: Safari
Version: 26.1
CVE: CVE-2025-43433
Component: WebKit
Impact: Processing maliciously crafted web content may lead to memory corruption
Description: The issue was addressed with improved memory handling.
Debian
CVE-2025-43433: webkit2gtk - The issue was addressed with improved memory handling. This issue is fixed in Sa...
vendor_debian·2025·CVSS 8.8
CVE-2025-43433 [HIGH] CVE-2025-43433: webkit2gtk - The issue was addressed with improved memory handling. This issue is fixed in Sa...
The issue was addressed with improved memory handling. This issue is fixed in Safari 26.1, iOS 18.7.2 and iPadOS 18.7.2, iOS 26.1 and iPadOS 26.1, macOS Tahoe 26.1, tvOS 26.1, visionOS 26.1, watchOS 26.1. Processing maliciously crafted web content may lead to memory corruption.
Scope: local
bookworm: resolved (fixed in 2.50.2-1~deb12u1)
bullseye: resolved (fixed in 2.50.2-1)
forky: resolved (fixed in 2.50.2-1)
sid: resolved (fixed in 2.50.2-1)
trixie: resolved (fixed in 2.50.2-1~deb13u1)
No detection rules found.
No public exploits indexed.
Bugzilla
CVE-2025-43433 webkit2gtk4.0: Processing maliciously crafted web content may lead to memory corruption [fedora-all]
bugzilla·2026-03-19·CVSS 8.8
CVE-2025-43433 [HIGH] CVE-2025-43433 webkit2gtk4.0: Processing maliciously crafted web content may lead to memory corruption [fedora-all]
CVE-2025-43433 webkit2gtk4.0: Processing maliciously crafted web content may lead to memory corruption [fedora-all]
Disclaimer: Community trackers are created by Red Hat Product Security team on a best effort basis. Package maintainers are required to ascertain if the flaw indeed affects their package, before starting the update process.
Discussion:
This bug appears to have been reported against 'rawhide' during the Fedora Linux 45 development cycle.
Changing version to 45.
Bugzilla
CVE-2025-43433 webkitgtk: Processing maliciously crafted web content may lead to memory corruption
bugzilla·2026-03-18·CVSS 8.8
CVE-2025-43433 [HIGH] CVE-2025-43433 webkitgtk: Processing maliciously crafted web content may lead to memory corruption
CVE-2025-43433 webkitgtk: Processing maliciously crafted web content may lead to memory corruption
The issue was addressed with improved memory handling. This issue is fixed in tvOS 26.1, 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 memory corruption.
https://support.apple.com/en-us/125632https://support.apple.com/en-us/125633https://support.apple.com/en-us/125634https://support.apple.com/en-us/125637https://support.apple.com/en-us/125638https://support.apple.com/en-us/125639https://support.apple.com/en-us/125640https://access.redhat.com/errata/RHSA-2025:22789https://access.redhat.com/errata/RHSA-2025:22790https://access.redhat.com/security/cve/CVE-2025-43433https://bugzilla.redhat.com/show_bug.cgi?id=2448783https://security.access.redhat.com/data/csaf/v2/vex/2025/cve-2025-43433.json
2025-11-04
Published