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.
総合評価: CVE-2026-20665 は中リスク(42/100)。CVSS 深刻度は中。悪用される可能性が高い(EPSS 0.61%、44 パーセンタイル) 推奨対応: 影響資産を整理し、修補計画に組み込んでください。
リスクは変動します。再評価に基づき、本ページの表示内容を更新しています。
EPSS は日次で悪用されやすさの相対度合いを推定します。パーセンタイルは採点済み CVE の中での相対位置(高いほど相対的に深刻)を示します。
| # | 日付 | 旧 EPSS スコア | 新 EPSS スコア | Δ(新 − 旧) |
|---|---|---|---|---|
| 1 | 2026-06-15 | 0.16% | 0.61% | +0.45% |
| 2 | 2026-03-31 | 0.12% | 0.16% | +0.04% |
| 3 | 2026-03-26 | — | 0.12% | — |
EPSS の全履歴 (全 4 件)
この CVE の CVSS 指標。
| ベーススコア | バージョン | 深刻度 | ベクトル | 悪用しやすさ | 影響 | スコアの出典 |
|---|---|---|---|---|---|---|
| 6.5 | 3.1 | MEDIUM |
|
3.9 | 2.5 | 134c704f-9b21-4f2e-91b3-4a467353bcc0 |
| vendor | priority | summary | link |
|---|---|---|---|
debian
|
end-of-life | CVE-2026-20665 end-of-life priority: Debian including 2 source packages (webkit2gtk, wpewebkit), 10 status rows across 5 suites (bookworm, bullseye, forky, sid, trixie): open 5, resolved 5. | https://security-tracker.debian.org/tracker/CVE-2026-20665 |
redhat
|
medium | — | https://access.redhat.com/security/cve/CVE-2026-20665 |
suse
|
medium | — | https://www.suse.com/security/cve/CVE-2026-20665/ |
ubuntu
|
medium | CVE-2026-20665 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, needed 3, released 1. | https://ubuntu.com/security/CVE-2026-20665 |
| ベンダー | 製品 | バージョン | 生の CPE |
|---|---|---|---|
| apple | safari | < 26.4 | cpe:2.3:a:apple:safari:*:*:*:*:*:*:*:* |
| apple | ipados | < 18.7.7 | cpe:2.3:o:apple:ipados:*:*:*:*:*:*:*:* |
| apple | ipados | >= 26.0, < 26.4 | cpe:2.3:o:apple:ipados:*:*:*:*:*:*:*:* |
| apple | iphone_os | < 18.7.7 | cpe:2.3:o:apple:iphone_os:*:*:*:*:*:*:*:* |
| apple | iphone_os | >= 26.0, < 26.4 | cpe:2.3:o:apple:iphone_os:*:*:*:*:*:*:*:* |
| apple | macos | < 26.4 | cpe:2.3:o:apple:macos:*:*:*:*:*:*:*:* |
| apple | tvos | < 26.4 | cpe:2.3:o:apple:tvos:*:*:*:*:*:*:*:* |
| apple | visionos | < 26.4 | cpe:2.3:o:apple:visionos:*:*:*:*:*:*:*:* |
| apple | watchos | < 26.4 | cpe:2.3:o:apple:watchos:*:*:*:*:*:*:*:* |
| URL | タグ |
|---|---|
| https://support.apple.com/en-us/126792 | Release Notes Vendor Advisory |
| https://support.apple.com/en-us/126793 | Release Notes Vendor Advisory |
| https://support.apple.com/en-us/126794 | Release Notes Vendor Advisory |
| https://support.apple.com/en-us/126797 | Release Notes Vendor Advisory |
| https://support.apple.com/en-us/126798 | Release Notes Vendor Advisory |
| https://support.apple.com/en-us/126799 | Release Notes Vendor Advisory |
| https://support.apple.com/en-us/126800 | Release Notes Vendor Advisory |