The issue was addressed with improved checks. This issue is fixed in Safari 18.5, iOS 18.5 and iPadOS 18.5, macOS Sequoia 15.5, tvOS 18.5, visionOS 2.5, watchOS 11.5. Processing maliciously crafted web content may lead to memory corruption.
Conclusion & alert: CVE-2025-31223 is rated Moderate Risk (55.6/100): CVSS High severity, with medium exploitation likelihood (EPSS 0.52%). 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 | 2026-03-08 | 0.15% | 0.52% | +0.37% |
| 2 | 2026-01-26 | 0.07% | 0.15% | +0.08% |
| 3 | 2025-11-21 | — | 0.07% | — |
Full EPSS history (8 records total)
CVSS metrics for this CVE.
| Base score | Version | Severity | Vector | Exploitability | Impact | Score source |
|---|---|---|---|---|---|---|
| 8.0 | 3.1 | HIGH |
|
2.1 | 5.9 | 134c704f-9b21-4f2e-91b3-4a467353bcc0 |
| vendor | priority | summary | link |
|---|---|---|---|
debian
|
end-of-life | CVE-2025-31223 end-of-life 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-2025-31223 |
redhat
|
high | — | https://access.redhat.com/security/cve/CVE-2025-31223 |
suse
|
high | CVE-2025-31223 severity important: SUSE including 88 source package names (WebKitGTK-4.0-lang-2.52.0-150400.4.137.3, WebKitGTK-4.0-lang-2.52.1-150600.12.63.1, …), 359 product×package rows across 24 product lines (SUSE Liberty Linux 8, SUSE Liberty Linux 9, … (24 product lines)): Fixed 341, First Fixed 18. | https://www.suse.com/security/cve/CVE-2025-31223/ |
ubuntu
|
medium | CVE-2025-31223 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, questing, upstream, xenial): ignored 14, DNE 9, needs-triage 4, released 4. | https://ubuntu.com/security/CVE-2025-31223 |
| Vendor | Product | Version | Raw CPE |
|---|---|---|---|
| apple | safari | < 18.5 | cpe:2.3:a:apple:safari:*:*:*:*:*:*:*:* |
| apple | ipados | < 18.5 | cpe:2.3:o:apple:ipados:*:*:*:*:*:*:*:* |
| apple | iphone_os | < 18.5 | cpe:2.3:o:apple:iphone_os:*:*:*:*:*:*:*:* |
| apple | macos | < 15.5 | cpe:2.3:o:apple:macos:*:*:*:*:*:*:*:* |
| apple | tvos | < 18.5 | cpe:2.3:o:apple:tvos:*:*:*:*:*:*:*:* |
| apple | visionos | < 2.5 | cpe:2.3:o:apple:visionos:*:*:*:*:*:*:*:* |
| apple | watchos | < 11.5 | cpe:2.3:o:apple:watchos:*:*:*:*:*:*:*:* |
| URL | Tags |
|---|---|
| https://support.apple.com/en-us/122404 | Release Notes Vendor Advisory |
| https://support.apple.com/en-us/122716 | Release Notes Vendor Advisory |
| https://support.apple.com/en-us/122719 | Release Notes Vendor Advisory |
| https://support.apple.com/en-us/122720 | Release Notes Vendor Advisory |
| https://support.apple.com/en-us/122721 | Release Notes Vendor Advisory |
| https://support.apple.com/en-us/122722 | Release Notes Vendor Advisory |
| http://seclists.org/fulldisclosure/2025/May/10 | |
| http://seclists.org/fulldisclosure/2025/May/12 | |
| http://seclists.org/fulldisclosure/2025/May/13 | |
| http://seclists.org/fulldisclosure/2025/May/5 | |
| http://seclists.org/fulldisclosure/2025/May/7 |