CVE-2025-46299
published 2026-01-09CVE-2025-46299: A memory initialization issue was addressed with improved memory handling. This issue is fixed in Safari 26.2, iOS 26.2 and iPadOS 26.2, macOS Tahoe 26.2, tvOS…
PriorityP419medium4.3CVSS 3.1
AVNACLPRNUIRSUCLINAN
EPSS
0.27%
18.3th percentile
A memory initialization issue was addressed with improved memory handling. This issue is fixed in Safari 26.2, iOS 26.2 and iPadOS 26.2, macOS Tahoe 26.2, tvOS 26.2, visionOS 26.2, watchOS 26.2. Processing maliciously crafted web content may disclose internal states of the app.
Affected
17 ranges
| Vendor | Product | Version range | Fixed in |
|---|---|---|---|
| apple | ios_26.2_and_ipados | — | — |
| apple | ios_and_ipados | < 26.2 | 26.2 |
| apple | ipados | < 26.2 | 26.2 |
| apple | iphone_os | < 26.2 | 26.2 |
| apple | macos | < 26.2 | 26.2 |
| apple | macos_tahoe | — | — |
| apple | safari | < 26.2 | 26.2 |
| apple | safari | — | — |
| apple | tvos | < 26.2 | 26.2 |
| apple | tvos | — | — |
| apple | visionos | < 26.2 | 26.2 |
| apple | visionos | — | — |
| apple | watchos | < 26.2 | 26.2 |
| apple | watchos | — | — |
| debian | webkit2gtk | < webkit2gtk 2.52.0-1 (sid) | webkit2gtk 2.52.0-1 (sid) |
| debian | wpewebkit | < webkit2gtk 2.52.0-1 (sid) | webkit2gtk 2.52.0-1 (sid) |
| ubuntu | webkit2gtk | — | — |
CVSS provenance
nvdv3.14.3MEDIUMCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:N
osv4.3MEDIUM
vendor_debian4.3MEDIUM
vendor_redhat4.3MEDIUM
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Ubuntu
WebKitGTK vulnerabilities
vendor_ubuntu·2026-05-06
CVE-2026-20644 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 disclose internal states of the app
vendor_redhat·2026-03-18·CVSS 4.3
CVE-2025-46299 [MEDIUM] CWE-909 webkitgtk: Processing maliciously crafted web content may disclose internal states of the app
webkitgtk: Processing maliciously crafted web content may disclose internal states of the app
A memory initialization issue was addressed with improved memory handling. This issue is fixed in Safari 26.2, iOS 26.2 and iPadOS 26.2, macOS Tahoe 26.2, tvOS 26.2, visionOS 26.2, watchOS 26.2. Processing maliciously crafted web content may disclose internal states of the app.
A flaw was found in WebKitGTK. Processing malicious web content can cause a memory initialization issue due to improper memory handling and result in the disclosure of the internal states of the application.
Statement: To exploit this flaw, an attacker needs to trick a user into processing or loading malicious web content. Due to this reason, this flaw has been rated with a moderate severity.
Mitigation: Do not process
Apple
CVE-2025-46299: macOS Tahoe 26.2
vendor_apple·2025-12-12·CVSS 4.3
CVE-2025-46299 [MEDIUM] CVE-2025-46299: macOS Tahoe 26.2
Apple Security Update: About the security content of macOS Tahoe 26.2
Product: macOS Tahoe
Version: 26.2
CVE: CVE-2025-46299
Component: WebKit
Impact: Processing maliciously crafted web content may disclose internal states of the app
Description: A memory initialization issue was addressed with improved memory handling.
Apple
CVE-2025-46299: visionOS 26.2
vendor_apple·2025-12-12·CVSS 4.3
CVE-2025-46299 [MEDIUM] CVE-2025-46299: visionOS 26.2
Apple Security Update: About the security content of visionOS 26.2
Product: visionOS
Version: 26.2
CVE: CVE-2025-46299
Component: WebKit
Impact: Processing maliciously crafted web content may disclose internal states of the app
Description: A memory initialization issue was addressed with improved memory handling.
Apple
CVE-2025-46299: watchOS 26.2
vendor_apple·2025-12-12·CVSS 4.3
CVE-2025-46299 [MEDIUM] CVE-2025-46299: watchOS 26.2
Apple Security Update: About the security content of watchOS 26.2
Product: watchOS
Version: 26.2
CVE: CVE-2025-46299
Component: WebKit
Impact: Processing maliciously crafted web content may disclose internal states of the app
Description: A memory initialization issue was addressed with improved memory handling.
Apple
CVE-2025-46299: tvOS 26.2
vendor_apple·2025-12-12·CVSS 4.3
CVE-2025-46299 [MEDIUM] CVE-2025-46299: tvOS 26.2
Apple Security Update: About the security content of tvOS 26.2
Product: tvOS
Version: 26.2
CVE: CVE-2025-46299
Component: WebKit
Impact: Processing maliciously crafted web content may disclose internal states of the app
Description: A memory initialization issue was addressed with improved memory handling.
Apple
CVE-2025-46299: iOS 26.2 and iPadOS 26.2
vendor_apple·2025-12-12·CVSS 4.3
CVE-2025-46299 [MEDIUM] CVE-2025-46299: iOS 26.2 and iPadOS 26.2
Apple Security Update: About the security content of iOS 26.2 and iPadOS 26.2
Product: iOS 26.2 and iPadOS
Version: 26.2
CVE: CVE-2025-46299
Component: WebKit
Impact: Processing maliciously crafted web content may disclose internal states of the app
Description: A memory initialization issue was addressed with improved memory handling.
Apple
CVE-2025-46299: Safari 26.2
vendor_apple·2025-12-12·CVSS 4.3
CVE-2025-46299 [MEDIUM] CVE-2025-46299: Safari 26.2
Apple Security Update: About the security content of Safari 26.2
Product: Safari
Version: 26.2
CVE: CVE-2025-46299
Component: WebKit
Impact: Processing maliciously crafted web content may disclose internal states of the app
Description: A memory initialization issue was addressed with improved memory handling.
Debian
CVE-2025-46299: webkit2gtk - A memory initialization issue was addressed with improved memory handling. This ...
vendor_debian·2025·CVSS 4.3
CVE-2025-46299 [MEDIUM] CVE-2025-46299: webkit2gtk - A memory initialization issue was addressed with improved memory handling. This ...
A memory initialization issue was addressed with improved memory handling. This issue is fixed in Safari 26.2, iOS 26.2 and iPadOS 26.2, macOS Tahoe 26.2, tvOS 26.2, visionOS 26.2, watchOS 26.2. Processing maliciously crafted web content may disclose internal states of the app.
Scope: local
bookworm: open
bullseye: open
forky: open
sid: resolved (fixed in 2.52.0-1)
trixie: open
GHSA
GHSA-29gc-r2qh-wc5v: A memory initialization issue was addressed with improved memory handling
ghsa_unreviewed·2026-01-10
CVE-2025-46299 [MEDIUM] CWE-284 GHSA-29gc-r2qh-wc5v: A memory initialization issue was addressed with improved memory handling
A memory initialization issue was addressed with improved memory handling. This issue is fixed in tvOS 26.2, Safari 26.2, watchOS 26.2, visionOS 26.2, iOS 26.2 and iPadOS 26.2, macOS Tahoe 26.2. Processing maliciously crafted web content may disclose internal states of the app.
OSV
CVE-2025-46299: A memory initialization issue was addressed with improved memory handling
osv·2026-01-09·CVSS 4.3
CVE-2025-46299 [MEDIUM] CVE-2025-46299: A memory initialization issue was addressed with improved memory handling
A memory initialization issue was addressed with improved memory handling. This issue is fixed in Safari 26.2, iOS 26.2 and iPadOS 26.2, macOS Tahoe 26.2, tvOS 26.2, visionOS 26.2, watchOS 26.2. Processing maliciously crafted web content may disclose internal states of the app.
OSV
CVE-2025-46299: A memory initialization issue was addressed with improved memory handling
osv·2026-01-09·CVSS 4.3
CVE-2025-46299 [MEDIUM] CVE-2025-46299: A memory initialization issue was addressed with improved memory handling
A memory initialization issue was addressed with improved memory handling. This issue is fixed in tvOS 26.2, Safari 26.2, watchOS 26.2, visionOS 26.2, iOS 26.2 and iPadOS 26.2, macOS Tahoe 26.2. Processing maliciously crafted web content may disclose internal states of the app.
No detection rules found.
No public exploits indexed.
Wiz
CVE-2025-46299 Impact, Exploitability, and Mitigation Steps | Wiz
blogs_wiz·CVSS 4.3
CVE-2025-46299 [MEDIUM] CVE-2025-46299 Impact, Exploitability, and Mitigation Steps | Wiz
## CVE-2025-46299 :
Apple Safari vulnerability analysis and mitigation
A memory initialization issue was addressed with improved memory handling. This issue is fixed in Safari 26.2, iOS 26.2 and iPadOS 26.2, macOS Tahoe 26.2, tvOS 26.2, visionOS 26.2, watchOS 26.2. Processing maliciously crafted web content may disclose internal states of the app.
Source : NVD
## 4.3
Score
Published January 9, 2026
Severity MEDIUM
CNA Score 4.3
Affected Technologies
Apple Safari
macOS
Has Public Exploit No
Has CISA KEV Exploit No
CISA KEV Release Date N/A
CISA KEV Due Date N/A
Exploitation Probability Percentile (EPSS) 6
Exploitation Probability (EPSS) N/A
Affected packages and libraries
webkit2gtk3-devel
typelib-1_0-WebKit2-4_0
Sources
Debian 11, 12, 13 Severity MEDIUM No Fix Added
Bugzilla
CVE-2025-46299 webkitgtk: Processing maliciously crafted web content may disclose internal states of the app [fedora-all]
bugzilla·2026-03-19·CVSS 4.3
CVE-2025-46299 [MEDIUM] CVE-2025-46299 webkitgtk: Processing maliciously crafted web content may disclose internal states of the app [fedora-all]
CVE-2025-46299 webkitgtk: Processing maliciously crafted web content may disclose internal states of the app [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:
FEDORA-2026-431948187d (webkitgtk-2.52.0-1.fc43) has been submitted as an update to Fedora 43.
https://bodhi.fedoraproject.org/updates/FEDORA-2026-431948187d
---
FEDORA-2026-6502cee6c2 (webkitgtk-2.52.0-1.fc44) has been submitted as an update to Fedora 44.
https://bodhi.fedoraproject.org/updates/FEDORA-2026-6502cee6c2
---
FEDORA-2026-36594550b0 (webkitgtk-2.52.0-1.fc42) has been submitted as an update to Fedora 42.
https://bodhi.fe
Bugzilla
CVE-2025-46299 webkitgtk: Processing maliciously crafted web content may disclose internal states of the app
bugzilla·2026-03-18·CVSS 4.3
CVE-2025-46299 [MEDIUM] CVE-2025-46299 webkitgtk: Processing maliciously crafted web content may disclose internal states of the app
CVE-2025-46299 webkitgtk: Processing maliciously crafted web content may disclose internal states of the app
A memory initialization issue was addressed with improved memory handling. This issue is fixed in tvOS 26.2, Safari 26.2, watchOS 26.2, visionOS 26.2, iOS 26.2 and iPadOS 26.2, macOS Tahoe 26.2. Processing maliciously crafted web content may disclose internal states of the app.
Discussion:
This issue has been addressed in the following products:
Red Hat Enterprise Linux 9
Via RHSA-2026:9692 https://access.redhat.com/errata/RHSA-2026:9692
2026-01-09
Published