This issue was addressed through improved state management. This issue is fixed in Safari 18.6, iOS 18.6 and iPadOS 18.6, macOS Sequoia 15.6, tvOS 18.6, visionOS 2.6, watchOS 11.6. Processing maliciously crafted web content may disclose sensitive user information.
Conclusion & alert: CVE-2025-43227 is rated Moderate Risk (57.4/100): CVSS High severity, with medium exploitation likelihood (EPSS 0.93%). Mandatory action: Review affected assets and schedule remediation.
Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.
EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).
| # | Date | Old EPSS score | New EPSS score | Delta (New - Old) |
|---|---|---|---|---|
| 1 | 2026-05-25 | 0.26% | 0.93% | +0.68% |
| 2 | 2026-05-15 | 0.21% | 0.26% | +0.04% |
| 3 | 2026-04-14 | — | 0.21% | — |
Full EPSS history (5 records total)
CVSS metrics for this CVE.
| Base score | Version | Severity | Vector | Exploitability | Impact | Score source |
|---|---|---|---|---|---|---|
| 7.5 | 3.1 | HIGH |
|
3.9 | 3.6 | 134c704f-9b21-4f2e-91b3-4a467353bcc0 |
| vendor | priority | summary | link |
|---|---|---|---|
debian
|
not yet assigned | CVE-2025-43227 not yet assigned priority: Debian including 2 source packages (webkit2gtk, wpewebkit), 10 status rows across 5 suites (bookworm, bullseye, forky, sid, trixie): resolved 7, open 3. | https://security-tracker.debian.org/tracker/CVE-2025-43227 |
gentoo
|
high | CVE-2025-43227: 1 GLSA(s) (202511-02), 1 atom(s) (net-libs/webkit-gtk); latest impact high. | https://bugs.gentoo.org/buglist.cgi?quicksearch=CVE-2025-43227 |
redhat
|
medium | — | https://access.redhat.com/security/cve/CVE-2025-43227 |
suse
|
high | CVE-2025-43227 severity important: SUSE including 107 source package names (WebKitGTK-4.0-lang-2.48.5-150400.4.122.1, WebKitGTK-4.0-lang-2.48.5-150600.12.43.1, …), 402 product×package rows across 34 product lines (SUSE Enterprise Storage 7.1, SUSE Liberty Linux 8, … (34 product lines)): Fixed 375, Known Not Affected 27. | https://www.suse.com/security/cve/CVE-2025-43227/ |
ubuntu
|
medium | CVE-2025-43227 medium priority: Ubuntu including 5 source packages (qtwebkit-opensource-src, qtwebkit-source, webkit2gtk, webkitgtk, wpewebkit), 31 status rows across 7 suites (bionic, focal, jammy, noble, plucky, upstream, xenial): ignored 14, DNE 9, needs-triage 4, released 4. | https://ubuntu.com/security/CVE-2025-43227 |
| Vendor | Product | Version | Raw CPE |
|---|---|---|---|
| apple | safari | < 18.6 | cpe:2.3:a:apple:safari:*:*:*:*:*:*:*:* |
| apple | ipados | < 18.6 | cpe:2.3:o:apple:ipados:*:*:*:*:*:*:*:* |
| apple | iphone_os | < 18.6 | cpe:2.3:o:apple:iphone_os:*:*:*:*:*:*:*:* |
| apple | macos | < 15.6 | cpe:2.3:o:apple:macos:*:*:*:*:*:*:*:* |
| apple | tvos | < 18.6 | cpe:2.3:o:apple:tvos:*:*:*:*:*:*:*:* |
| apple | visionos | < 2.6 | cpe:2.3:o:apple:visionos:*:*:*:*:*:*:*:* |
| apple | watchos | < 11.6 | cpe:2.3:o:apple:watchos:*:*:*:*:*:*:*:* |
| URL | Tags |
|---|---|
| https://support.apple.com/en-us/124147 | Release Notes Vendor Advisory |
| https://support.apple.com/en-us/124149 | Release Notes Vendor Advisory |
| https://support.apple.com/en-us/124152 | Release Notes Vendor Advisory |
| https://support.apple.com/en-us/124153 | Release Notes Vendor Advisory |
| https://support.apple.com/en-us/124154 | Release Notes Vendor Advisory |
| https://support.apple.com/en-us/124155 | Release Notes Vendor Advisory |
| http://seclists.org/fulldisclosure/2025/Aug/0 | |
| http://seclists.org/fulldisclosure/2025/Jul/30 | |
| http://seclists.org/fulldisclosure/2025/Jul/32 | |
| http://seclists.org/fulldisclosure/2025/Jul/35 | |
| http://seclists.org/fulldisclosure/2025/Jul/36 | |
| http://www.openwall.com/lists/oss-security/2025/08/02/1 | |
| https://lists.debian.org/debian-lts-announce/2025/08/msg00015.html |