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Vulnerabilities

Security fix · CVE-2025-30466

This issue was addressed through improved state management.

Published May 29, 2025 · catalog updated Apr 2, 2026 · Apple Safari

Check if you run it

No confirmed exploitation is on record for CVE-2025-30466. EPSS is 0.30%. Act only if a listed version of Apple Safari is installed.

Gaps on this record

  • No vendor fix or required action is stored. Compare the linked advisory before you change production.
Severity
Critical9.8
Known exploitation
Not in CISA/VulnCheck KEV
EPSS
0.30%
Remediation
Version ranges on file
Affected products
vendor Apple Safari 0 <18.4

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.

Are you affected?

Enter the version you run. The result uses only the ranges stored on this record.

The check returns affected, not affected, or incomplete. It does not guess a version that is missing from the record.

  • vendor Apple Safari 0 <18.40 <18.4

How to fix CVE-2025-30466

What to do

Three questions, each answered from this record only. Confirm the vendor advisory before you patch.

Should you patch?

No confirmed exploitation is on record for CVE-2025-30466. EPSS is 0.30%. Act only if a listed version of Apple Safari is installed.

Which versions are affected?

Compare what you have installed with Apple Safari 0 <18.4 0 <18.4. Compare the installed version with the linked vendor advisory before you change production.

What should an analyst verify?

No weakness class is stored. EPSS 0.30%. There is no CISA KEV listing. No Exploit-DB or Metasploit reference is linked. Use the source links for the original advisory.

Code

The project this record applies to. Exploit listings stay in References.

No public source repository is identified for this product.

Timeline

Detection, updates, and resolution for this record.

  1. May 29, 2025 · EUVD

    Detected

    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.

  2. Apr 2, 2026 · EUVD

    Updated

    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.

Sources

  • CVE.orgVulnerability recordCVE-2025-30466

    Official CVE identifier

    cve.org
  • FIRST EPSSExploitation probabilityCVE-2025-30466

    30-day exploitation probability 0.3%

    first.org
  • EUVDVulnerability recordEUVD-2025-16423

    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.

    euvd.enisa.europa.eu

References

Freshness

Last verified in this catalog Oct 18, 2026. Significant claims (KEV, EPSS, CVSS, affected ranges) come from the source rows above — open the original publisher for the authoritative advisory.