CVE-2025-43434
published 2025-11-04CVE-2025-43434: A use-after-free issue was addressed with improved memory management. This issue is fixed in Safari 26.1, iOS 18.7.2 and iPadOS 18.7.2, iOS 26.1 and iPadOS…
PriorityP422medium4.3CVSS 3.1
AVNACLPRNUIRSUCNINAL
EPSS
1.28%
69.9th percentile
A use-after-free issue was addressed with improved memory management. 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, visionOS 26.1, watchOS 26.1. Processing maliciously crafted web content may lead to an unexpected Safari crash.
Affected
16 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 | 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
nvdv3.14.3MEDIUMCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:L
osv4.3MEDIUM
vendor_debian4.3MEDIUM
vendor_redhat4.3MEDIUM
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Ubuntu
WebKitGTK vulnerabilities
vendor_ubuntu·2025-12-08
CVE-2025-43392 WebKitGTK vulnerabilities
Title: WebKitGTK vulnerabilities
Summary: Several security issues were fixed in WebKitGTK.
Several security issues were discovered in the WebKitGTK Web and JavaScript
engines. If a user were tricked into viewing a malicious website, a remote
attacker could exploit a variety of issues related to web browser security,
including cross-site scripting attacks, denial of service attacks, and
arbitrary code execution.
Instructions: This update uses a new upstream release, which includes additional bug
fixes. After a standard system update you need to restart any applications
that use WebKitGTK, such as Epiphany, to make all the necessary changes.
Red Hat
webkitgtk: Processing maliciously crafted web content may lead to an unexpected Safari crash
vendor_redhat·2025-11-20·CVSS 4.3
CVE-2025-43434 [MEDIUM] CWE-416 webkitgtk: Processing maliciously crafted web content may lead to an unexpected Safari crash
webkitgtk: Processing maliciously crafted web content may lead to an unexpected Safari crash
A use-after-free issue was addressed with improved memory management. 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, visionOS 26.1, watchOS 26.1. Processing maliciously crafted web content may lead to an unexpected Safari crash.
A flaw was found in WebKitGTK. Processing malicious web content can cause a use-after-free issue due to improper memory management and result in an unexpected process crash.
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 an unexpecte
Apple
CVE-2025-43434: iOS 18.7.2 and iPadOS 18.7.2
vendor_apple·2025-11-05·CVSS 4.3
CVE-2025-43434 [MEDIUM] CVE-2025-43434: 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-2025-43434
Component: WebKit
Impact: Processing maliciously crafted web content may lead to an unexpected Safari crash
Description: A use-after-free issue was addressed with improved memory management.
Apple
CVE-2025-43434: iOS 26.1 and iPadOS 26.1
vendor_apple·2025-11-03·CVSS 4.3
CVE-2025-43434 [MEDIUM] CVE-2025-43434: 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-2025-43434
Component: WebKit
Impact: Processing maliciously crafted web content may lead to an unexpected Safari crash
Description: A use-after-free issue was addressed with improved memory management.
Apple
CVE-2025-43434: macOS Tahoe 26.1
vendor_apple·2025-11-03·CVSS 4.3
CVE-2025-43434 [MEDIUM] CVE-2025-43434: macOS Tahoe 26.1
Apple Security Update: About the security content of macOS Tahoe 26.1
Product: macOS Tahoe
Version: 26.1
CVE: CVE-2025-43434
Component: WebKit
Impact: Processing maliciously crafted web content may lead to an unexpected Safari crash
Description: A use-after-free issue was addressed with improved memory management.
Apple
CVE-2025-43434: Safari 26.1
vendor_apple·2025-11-03·CVSS 4.3
CVE-2025-43434 [MEDIUM] CVE-2025-43434: Safari 26.1
Apple Security Update: About the security content of Safari 26.1
Product: Safari
Version: 26.1
CVE: CVE-2025-43434
Component: WebKit
Impact: Processing maliciously crafted web content may lead to an unexpected Safari crash
Description: A use-after-free issue was addressed with improved memory management.
Apple
CVE-2025-43434: watchOS 26.1
vendor_apple·2025-11-03·CVSS 4.3
CVE-2025-43434 [MEDIUM] CVE-2025-43434: watchOS 26.1
Apple Security Update: About the security content of watchOS 26.1
Product: watchOS
Version: 26.1
CVE: CVE-2025-43434
Component: WebKit
Impact: Processing maliciously crafted web content may lead to an unexpected Safari crash
Description: A use-after-free issue was addressed with improved memory management.
Apple
CVE-2025-43434: visionOS 26.1
vendor_apple·2025-11-03·CVSS 4.3
CVE-2025-43434 [MEDIUM] CVE-2025-43434: visionOS 26.1
Apple Security Update: About the security content of visionOS 26.1
Product: visionOS
Version: 26.1
CVE: CVE-2025-43434
Component: WebKit
Impact: Processing maliciously crafted web content may lead to an unexpected Safari crash
Description: A use-after-free issue was addressed with improved memory management.
Debian
CVE-2025-43434: webkit2gtk - A use-after-free issue was addressed with improved memory management. This issue...
vendor_debian·2025·CVSS 4.3
CVE-2025-43434 [MEDIUM] CVE-2025-43434: webkit2gtk - A use-after-free issue was addressed with improved memory management. This issue...
A use-after-free issue was addressed with improved memory management. 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, visionOS 26.1, watchOS 26.1. Processing maliciously crafted web content may lead to an unexpected Safari crash.
Scope: local
bookworm: resolved (fixed in 2.50.2-1~deb12u1)
bullseye: resolved (fixed in 2.50.2-1~deb11u1)
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)
GHSA
GHSA-3x69-vfm2-92j8: A use-after-free issue was addressed with improved memory management
ghsa_unreviewed·2025-11-04
CVE-2025-43434 [MEDIUM] CWE-416 GHSA-3x69-vfm2-92j8: A use-after-free issue was addressed with improved memory management
A use-after-free issue was addressed with improved memory management. This issue is fixed in watchOS 26.1, iOS 26.1 and iPadOS 26.1, Safari 26.1, visionOS 26.1. Processing maliciously crafted web content may lead to an unexpected Safari crash.
OSV
CVE-2025-43434: A use-after-free issue was addressed with improved memory management
osv·2025-11-04·CVSS 4.3
CVE-2025-43434 [MEDIUM] CVE-2025-43434: A use-after-free issue was addressed with improved memory management
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.
OSV
CVE-2025-43434: A use-after-free issue was addressed with improved memory management
osv·2025-11-04·CVSS 4.3
CVE-2025-43434 [MEDIUM] CVE-2025-43434: A use-after-free issue was addressed with improved memory management
A use-after-free issue was addressed with improved memory management. 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, visionOS 26.1, watchOS 26.1. Processing maliciously crafted web content may lead to an unexpected Safari crash.
No detection rules found.
No public exploits indexed.
2025-11-04
Published