CVE-2026-20665mediumCWE-693

CVE-2026-20665: medium-severity vulnerability in Apple Safari

Published 25 Mar 2026 · Updated 26 Oct 2026

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13Vexday Risk Score

No sign of exploitation. No public exploitation artifact known so far.

ssvc Trackcvss 6.5epss 0.6%

This issue was addressed through improved state management. This issue is fixed in Safari 26.4, iOS 18.7.7 and iPadOS 18.7.7, iOS 26.4 and iPadOS 26.4, macOS Tahoe 26.4, tvOS 26.4, visionOS 26.4, watchOS 26.4. Processing maliciously crafted web content may prevent Content Security Policy from being enforced.

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:L

Affected products

Apple · iOS and iPadOS Apple · macOS Apple · Safari Apple · tvOS Apple · visionOS Apple · watchOS

Related CVEs — Apple Safari

In the same product, most dangerous first.

CVE-2021-30860HIGHCVE-2021-30860EPSS 76.0%KEV CVE-2021-30657MEDIUMCVE-2021-30657EPSS 68.5%KEV CVE-2025-43300CRITICALCVE-2025-43300EPSS 65.2%KEV CVE-2023-41064HIGHCVE-2023-41064EPSS 53.4%KEV CVE-2023-32434HIGHCVE-2023-32434EPSS 51.5%KEV CVE-2021-30807HIGHCVE-2021-30807EPSS 28.8%KEV

References

https://support.apple.com/en-us/126792 https://support.apple.com/en-us/126793 https://support.apple.com/en-us/126794 https://support.apple.com/en-us/126797 https://support.apple.com/en-us/126798 https://support.apple.com/en-us/126799 https://support.apple.com/en-us/126800