CVE-2025-43421
published 2025-11-04CVE-2025-43421: Multiple issues were addressed by disabling array allocation sinking. This issue is fixed in Safari 26.1, iOS 26.1 and iPadOS 26.1, macOS Tahoe 26.1, visionOS…
PriorityP420medium4.3CVSS 3.1
AVNACLPRNUIRSUCNINAL
EPSS
0.59%
44.7th percentile
Multiple issues were addressed by disabling array allocation sinking. This issue is fixed in Safari 26.1, iOS 26.1 and iPadOS 26.1, macOS Tahoe 26.1, visionOS 26.1. Processing maliciously crafted web content may lead to an unexpected process crash.
Affected
12 ranges
| Vendor | Product | Version range | Fixed in |
|---|---|---|---|
| apple | ios_26.1_and_ipados | — | — |
| 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 | — | — |
| debian | webkit2gtk | < webkit2gtk 2.50.3-1~deb12u1 (bookworm) | webkit2gtk 2.50.3-1~deb12u1 (bookworm) |
| debian | wpewebkit | < webkit2gtk 2.50.3-1~deb12u1 (bookworm) | webkit2gtk 2.50.3-1~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·2026-01-05
CVE-2025-66287 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 process crash
vendor_redhat·2025-11-20·CVSS 4.3
CVE-2025-43421 [MEDIUM] CWE-119 webkitgtk: Processing maliciously crafted web content may lead to an unexpected process crash
webkitgtk: Processing maliciously crafted web content may lead to an unexpected process crash
Multiple issues were addressed by disabling array allocation sinking. This issue is fixed in Safari 26.1, iOS 26.1 and iPadOS 26.1, macOS Tahoe 26.1, visionOS 26.1. Processing maliciously crafted web content may lead to an unexpected process crash.
A flaw was found in WebKitGTK. Processing malicious web content can cause multiple issues in the JIT compiler 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 unexpected process crash but the possibility of remote code execution is
Apple
CVE-2025-43421: macOS Tahoe 26.1
vendor_apple·2025-11-03·CVSS 4.3
CVE-2025-43421 [MEDIUM] CVE-2025-43421: macOS Tahoe 26.1
Apple Security Update: About the security content of macOS Tahoe 26.1
Product: macOS Tahoe
Version: 26.1
CVE: CVE-2025-43421
Component: WebKit
Impact: Processing maliciously crafted web content may lead to an unexpected process crash
Description: Multiple issues were addressed by disabling array allocation sinking.
Apple
CVE-2025-43421: iOS 26.1 and iPadOS 26.1
vendor_apple·2025-11-03·CVSS 4.3
CVE-2025-43421 [MEDIUM] CVE-2025-43421: 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-2025-43421
Component: WebKit
Impact: Processing maliciously crafted web content may lead to an unexpected process crash
Description: Multiple issues were addressed by disabling array allocation sinking.
Apple
CVE-2025-43421: Safari 26.1
vendor_apple·2025-11-03·CVSS 4.3
CVE-2025-43421 [MEDIUM] CVE-2025-43421: Safari 26.1
Apple Security Update: About the security content of Safari 26.1
Product: Safari
Version: 26.1
CVE: CVE-2025-43421
Component: WebKit
Impact: Processing maliciously crafted web content may lead to an unexpected process crash
Description: Multiple issues were addressed by disabling array allocation sinking.
Apple
CVE-2025-43421: visionOS 26.1
vendor_apple·2025-11-03·CVSS 4.3
CVE-2025-43421 [MEDIUM] CVE-2025-43421: visionOS 26.1
Apple Security Update: About the security content of visionOS 26.1
Product: visionOS
Version: 26.1
CVE: CVE-2025-43421
Component: WebKit
Impact: Processing maliciously crafted web content may lead to an unexpected process crash
Description: Multiple issues were addressed by disabling array allocation sinking.
Debian
CVE-2025-43421: webkit2gtk - Multiple issues were addressed by disabling array allocation sinking. This issue...
vendor_debian·2025·CVSS 4.3
CVE-2025-43421 [MEDIUM] CVE-2025-43421: webkit2gtk - Multiple issues were addressed by disabling array allocation sinking. This issue...
Multiple issues were addressed by disabling array allocation sinking. This issue is fixed in Safari 26.1, iOS 26.1 and iPadOS 26.1, macOS Tahoe 26.1, visionOS 26.1. Processing maliciously crafted web content may lead to an unexpected process crash.
Scope: local
bookworm: resolved (fixed in 2.50.3-1~deb12u1)
bullseye: resolved (fixed in 2.50.3-1~deb11u1)
forky: resolved (fixed in 2.50.3-1)
sid: resolved (fixed in 2.50.3-1)
trixie: resolved (fixed in 2.50.3-1~deb13u1)
GHSA
GHSA-43xx-j7mw-696v: Multiple issues were addressed by disabling array allocation sinking
ghsa_unreviewed·2025-11-04
CVE-2025-43421 [MEDIUM] CWE-125 GHSA-43xx-j7mw-696v: Multiple issues were addressed by disabling array allocation sinking
Multiple issues were addressed by disabling array allocation sinking. This issue is fixed in iOS 26.1 and iPadOS 26.1, Safari 26.1, visionOS 26.1. Processing maliciously crafted web content may lead to an unexpected process crash.
OSV
CVE-2025-43421: Multiple issues were addressed by disabling array allocation sinking
osv·2025-11-04·CVSS 4.3
CVE-2025-43421 [MEDIUM] CVE-2025-43421: Multiple issues were addressed by disabling array allocation sinking
Multiple issues were addressed by disabling array allocation sinking. This issue is fixed in iOS 26.1 and iPadOS 26.1, macOS Tahoe 26.1, visionOS 26.1, Safari 26.1. Processing maliciously crafted web content may lead to an unexpected process crash.
OSV
CVE-2025-43421: Multiple issues were addressed by disabling array allocation sinking
osv·2025-11-04·CVSS 4.3
CVE-2025-43421 [MEDIUM] CVE-2025-43421: Multiple issues were addressed by disabling array allocation sinking
Multiple issues were addressed by disabling array allocation sinking. This issue is fixed in Safari 26.1, iOS 26.1 and iPadOS 26.1, macOS Tahoe 26.1, visionOS 26.1. Processing maliciously crafted web content may lead to an unexpected process crash.
No detection rules found.
No public exploits indexed.
2025-11-04
Published