CVE-2025-30466

CRITICALNVD 9.89.8—

9.8

This issue was addressed through improved state management. This issue is fixed in Safari 18.4, iOS 18.4 and iPadOS 18.4, macOS Sequoia 15.4, visionOS 2.4. A website may be able to bypass Same Origin Policy.

CVSS v3: 9.8
EG Score: 9.8(medium)
EPSS: 31.4%
KEV: Not listed

Published

May 29, 2025

Last Modified

April 2, 2026

Advisory Details (4)

Auto-updated May 19, 2026

No patch confirmed yet.

generic

About the security content of Safari 18.4 - Apple Support

https://support.apple.com/en-us/122379

generic

About the security content of visionOS 2.4 - Apple Support

https://support.apple.com/en-us/122378

generic

About the security content of macOS Sequoia 15.4 - Apple Support

https://support.apple.com/en-us/122373

generic

About the security content of iOS 18.4 and iPadOS 18.4 - Apple Support

https://support.apple.com/en-us/122371

Weakness Classification(1)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

CWE-346Origin Validation Error

Data Freshness Timeline

(refreshed 12× in last 7d / 20× in last 30d)

Every time one of our enrichment pipelines (NVD, MITRE cvelistV5, EPSS, CISA KEV, GHSA, OSV, vendor advisories) ran against this CVE. Most recent first.

2026-06-02 20:12 UTCepss_batch
2026-06-01 13:51 UTCepss_batch
2026-06-01 13:51 UTCepss_batch
2026-05-31 22:30 UTCepss_batch
2026-05-31 22:30 UTCepss_batch
2026-05-31 00:16 UTCepss_batch
2026-05-31 00:16 UTCepss_batch
2026-05-29 13:44 UTCepss_batch
2026-05-28 13:44 UTCepss_batch
2026-05-28 13:44 UTCepss_batch
2026-05-28 13:44 UTCepss_batch
2026-05-28 13:44 UTCepss_batch
2026-05-27 13:40 UTCepss_batch
2026-05-27 13:40 UTCepss_batch
2026-05-27 13:40 UTCepss_batch
2026-05-27 13:40 UTCepss_batch
2026-05-27 13:40 UTCepss_batch
2026-05-26 13:43 UTCepss_batch
2026-05-26 13:43 UTCepss_batch
2026-05-26 13:43 UTCepss_batch

Frequently asked(5)

What is CVE-2025-30466?

CVE-2025-30466 is a critical vulnerability published on May 29, 2025. This issue was addressed through improved state management. This issue is fixed in Safari 18.4, iOS 18.4 and iPadOS 18.4, macOS Sequoia 15.4, visionOS 2.4. A website may be able to bypass Same Origin Policy.

When was CVE-2025-30466 disclosed?

CVE-2025-30466 was first published in the National Vulnerability Database on May 29, 2025, with the most recent update on April 2, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.

Is CVE-2025-30466 actively exploited?

CVE-2025-30466 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 31.4% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.

What is the CVSS score of CVE-2025-30466?

CVE-2025-30466 has a CVSS v3 base score of 9.8 (NVD).

How do I remediate CVE-2025-30466?

Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2025-30466, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

Dependency Blast Radius

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CVE-2025-30466

📅 Published

🔄 Last Modified

📋 Advisory Details (4)

About the security content of Safari 18.4 - Apple Support

About the security content of visionOS 2.4 - Apple Support

About the security content of macOS Sequoia 15.4 - Apple Support

About the security content of iOS 18.4 and iPadOS 18.4 - Apple Support

Weakness Classification(1)

Data Freshness Timeline

❓ Frequently asked(5)

Dependency Blast Radius

Is Your Infrastructure Affected by CVE-2025-30466?

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Last Modified

Advisory Details (4)

Frequently asked(5)

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