CVE-2025-43536
published 2025-12-17CVE-2025-43536: A use-after-free issue was addressed with improved memory management. This issue is fixed in Safari 26.2, iOS 18.7.3 and iPadOS 18.7.3, iOS 26.2 and iPadOS…
PriorityP422medium4.3CVSS 3.1
AVNACLPRNUIRSUCNINAL
EPSS
0.56%
42.8th percentile
A use-after-free issue was addressed with improved memory management. This issue is fixed in Safari 26.2, iOS 18.7.3 and iPadOS 18.7.3, iOS 26.2 and iPadOS 26.2, macOS Tahoe 26.2. Processing maliciously crafted web content may lead to an unexpected process crash.
Affected
14 ranges
| Vendor | Product | Version range | Fixed in |
|---|---|---|---|
| apple | ios_18.7.3_and_ipados | — | — |
| apple | ios_26.2_and_ipados | — | — |
| apple | ios_and_ipados | < 18.7.3 | 18.7.3 |
| apple | ios_and_ipados | < 26.2 | 26.2 |
| apple | ipados | < 18.7.3 | 18.7.3 |
| apple | ipados | >= 26.0 < 26.2 | 26.2 |
| apple | iphone_os | < 18.7.3 | 18.7.3 |
| apple | iphone_os | >= 26.0 < 26.2 | 26.2 |
| apple | macos | < 26.2 | 26.2 |
| apple | macos_tahoe | — | — |
| apple | safari | < 26.2 | 26.2 |
| apple | safari | — | — |
| debian | webkit2gtk | < webkit2gtk 2.50.4-1~deb12u1 (bookworm) | webkit2gtk 2.50.4-1~deb12u1 (bookworm) |
| debian | wpewebkit | < webkit2gtk 2.50.4-1~deb12u1 (bookworm) | webkit2gtk 2.50.4-1~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
Stop checking back — get the weekly exploitation signal.
Every Monday: what got weaponized or added to CISA KEV in the last seven days — each CVE cross-linked to its PoC, Nuclei template, and detection rule. Free, one email a week, unsubscribe in one click.
Ubuntu
WebKitGTK vulnerabilities
vendor_ubuntu·2026-01-13
CVE-2025-14174 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·2025-12-17·CVSS 4.3
CVE-2025-43536 [MEDIUM] CWE-416 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
A use-after-free issue was addressed with improved memory management. This issue is fixed in Safari 26.2, iOS 18.7.3 and iPadOS 18.7.3, iOS 26.2 and iPadOS 26.2, macOS Tahoe 26.2. Processing maliciously crafted web content may lead to an unexpected process 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 unexpected process crash but the pos
Apple
CVE-2025-43536: iOS 26.2 and iPadOS 26.2
vendor_apple·2025-12-12·CVSS 4.3
CVE-2025-43536 [MEDIUM] CVE-2025-43536: 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-2025-43536
Component: WebKit
Impact: Processing maliciously crafted web content may lead to an unexpected process crash
Description: A use-after-free issue was addressed with improved memory management.
Apple
CVE-2025-43536: macOS Tahoe 26.2
vendor_apple·2025-12-12·CVSS 4.3
CVE-2025-43536 [MEDIUM] CVE-2025-43536: macOS Tahoe 26.2
Apple Security Update: About the security content of macOS Tahoe 26.2
Product: macOS Tahoe
Version: 26.2
CVE: CVE-2025-43536
Component: WebKit
Impact: Processing maliciously crafted web content may lead to an unexpected process crash
Description: A use-after-free issue was addressed with improved memory management.
Apple
CVE-2025-43536: iOS 18.7.3 and iPadOS 18.7.3
vendor_apple·2025-12-12·CVSS 4.3
CVE-2025-43536 [MEDIUM] CVE-2025-43536: iOS 18.7.3 and iPadOS 18.7.3
Apple Security Update: About the security content of iOS 18.7.3 and iPadOS 18.7.3
Product: iOS 18.7.3 and iPadOS
Version: 18.7.3
CVE: CVE-2025-43536
Component: WebKit
Impact: Processing maliciously crafted web content may lead to an unexpected process crash
Description: A use-after-free issue was addressed with improved memory management.
Apple
CVE-2025-43536: Safari 26.2
vendor_apple·2025-12-12·CVSS 4.3
CVE-2025-43536 [MEDIUM] CVE-2025-43536: Safari 26.2
Apple Security Update: About the security content of Safari 26.2
Product: Safari
Version: 26.2
CVE: CVE-2025-43536
Component: WebKit
Impact: Processing maliciously crafted web content may lead to an unexpected process crash
Description: A use-after-free issue was addressed with improved memory management.
Debian
CVE-2025-43536: webkit2gtk - A use-after-free issue was addressed with improved memory management. This issue...
vendor_debian·2025·CVSS 4.3
CVE-2025-43536 [MEDIUM] CVE-2025-43536: 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 26.2, iOS 18.7.3 and iPadOS 18.7.3, iOS 26.2 and iPadOS 26.2, macOS Tahoe 26.2. Processing maliciously crafted web content may lead to an unexpected process crash.
Scope: local
bookworm: resolved (fixed in 2.50.4-1~deb12u1)
bullseye: resolved (fixed in 2.50.4-1~deb11u1)
forky: resolved (fixed in 2.50.4-1)
sid: resolved (fixed in 2.50.4-1)
trixie: resolved (fixed in 2.50.4-1~deb13u1)
OSV
CVE-2025-43536: A use-after-free issue was addressed with improved memory management
osv·2025-12-17·CVSS 4.3
CVE-2025-43536 [MEDIUM] CVE-2025-43536: 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 26.2, iOS 18.7.3 and iPadOS 18.7.3, iOS 26.2 and iPadOS 26.2, macOS Tahoe 26.2. Processing maliciously crafted web content may lead to an unexpected process crash.
GHSA
GHSA-9q7c-3v6c-w3ww: A use-after-free issue was addressed with improved memory management
ghsa_unreviewed·2025-12-17
CVE-2025-43536 [MEDIUM] CWE-416 GHSA-9q7c-3v6c-w3ww: 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 macOS Tahoe 26.2, iOS 26.2 and iPadOS 26.2, Safari 26.2, iOS 18.7.3 and iPadOS 18.7.3. Processing maliciously crafted web content may lead to an unexpected process crash.
OSV
CVE-2025-43536: A use-after-free issue was addressed with improved memory management
osv·2025-12-17·CVSS 4.3
CVE-2025-43536 [MEDIUM] CVE-2025-43536: 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 macOS Tahoe 26.2, iOS 26.2 and iPadOS 26.2, Safari 26.2, iOS 18.7.3 and iPadOS 18.7.3. Processing maliciously crafted web content may lead to an unexpected process crash.
No detection rules found.
No public exploits indexed.
Wiz
CVE-2025-43536 Impact, Exploitability, and Mitigation Steps | Wiz
blogs_wiz·CVSS 4.3
CVE-2025-43536 [MEDIUM] CVE-2025-43536 Impact, Exploitability, and Mitigation Steps | Wiz
## CVE-2025-43536 :
Apple Safari vulnerability analysis and mitigation
A use-after-free issue was addressed with improved memory management. This issue is fixed in Safari 26.2, iOS 18.7.3 and iPadOS 18.7.3, iOS 26.2 and iPadOS 26.2, macOS Tahoe 26.2. Processing maliciously crafted web content may lead to an unexpected process crash.
Source : NVD
## 4.3
Score
Published December 17, 2025
Severity MEDIUM
CNA Score 4.3
Affected Technologies
Apple Safari
Rocky Linux
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) 18.6
Exploitation Probability (EPSS) 0.1
Affected packages and libraries
webkitgtk4-plugin-process-gtk2
javascriptcoregtk4.1
Sources
AlmaLinux 8 Severity HIGH Has Fix Added
Bugzilla
CVE-2025-43536 webkit2gtk4.0: Processing maliciously crafted web content may lead to an unexpected process crash [fedora-42]
bugzilla·2025-12-17·CVSS 4.3
CVE-2025-43536 [MEDIUM] CVE-2025-43536 webkit2gtk4.0: Processing maliciously crafted web content may lead to an unexpected process crash [fedora-42]
CVE-2025-43536 webkit2gtk4.0: Processing maliciously crafted web content may lead to an unexpected process crash [fedora-42]
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.
The following link provides references to all essential vulnerability management information. If something is wrong or missing, please contact a member of PSIRT.
https://spaces.redhat.com/display/PRODSEC/Vulnerability+Management+-+Essential+Documents+for+Engineering+Teams
Discussion:
This message is a reminder that Fedora Linux 42 is nearing its end of life.
Fedora will stop maintaining and issuing updates for Fedora Linux 42 on 2026-05-13.
It
2025-12-17
Published