A vulnerability was found in WebKit. The flaw is triggered when processing maliciously crafted web content that may lead to arbitrary code execution. Improved memory handling addresses the multiple memory corruption issues.
総合評価: CVE-2019-8720 は在野悪用が確認された重大脅威（82.8/100）。CVSS 深刻度は高。悪用される可能性が高い（EPSS 1.56%、72 パーセンタイル） 根拠: CISA KEV に登録（追加日 2022-05-23）。WebKitGTK / WebKitGTK が対象で、弱点分類 CWE-119の悪用が確認されています。未認証でリモート管理権限を奪取されるリスクが極めて高い。 推奨対応: CISA の対応期限を過ぎています。緊急のパッチ適用を最優先に検討してください。
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。
: WebKitGTK Memory Corruption Vulnerability · CISA KEV の詳細
: 2022-05-23
: 2022-06-13
: Apply updates per vendor instructions.
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 | 4.12% | 1.56% | -2.56% |
| 2 | 2026-06-03 | 3.08% | 4.12% | +1.04% |
| 3 | 2026-05-27 | — | 3.08% | — |
EPSS の全履歴 （全 22 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 |
|---|---|---|---|---|---|---|
| 8.8 | 3.1 | HIGH |
|
2.8 | 5.9 | [email protected] |
| 8.8 | 3.1 | HIGH |
|
2.8 | 5.9 | 134c704f-9b21-4f2e-91b3-4a467353bcc0 |
| vendor | priority | summary | link |
|---|---|---|---|
alpine
|
— | CVE-2019-8720: 1 source package rows (webkit2gtk); 5 state rows across 5 repos (3.17-community, 3.18-community, 3.19-community, 3.20-community, edge-community); fixed 5, open 0. | https://security.alpinelinux.org/vuln/CVE-2019-8720 |
debian
|
not yet assigned | CVE-2019-8720 not yet assigned priority: Debian including 1 source packages (webkit2gtk), 5 status rows across 5 suites (bookworm, bullseye, forky, sid, trixie): resolved 5. | https://security-tracker.debian.org/tracker/CVE-2019-8720 |
gentoo
|
normal | CVE-2019-8720: 1 GLSA(s) (202003-22), 1 atom(s) (net-libs/webkit-gtk); latest impact normal. | https://bugs.gentoo.org/buglist.cgi?quicksearch=CVE-2019-8720 |
redhat
|
medium | — | https://access.redhat.com/security/cve/CVE-2019-8720 |
suse
|
high | CVE-2019-8720 severity important: SUSE including 262 source package names (LibRaw-0.19.5-2.el8, PackageKit-1.1.12-6.el8, …), 414 product×package rows across 50 product lines (HPE Helion OpenStack 8, SUSE Enterprise Storage 5, … (50 product lines)): Fixed 411, Known Not Affected 3. | https://www.suse.com/security/cve/CVE-2019-8720/ |
ubuntu
|
medium | CVE-2019-8720 medium priority: Ubuntu including 5 source packages (qtwebkit, qtwebkit-opensource-src, qtwebkit-source, webkit2gtk, webkitgtk), 75 status rows across 15 suites (bionic, disco, eoan, focal, groovy, hirsute, impish, jammy, kinetic, lunar, mantic, noble, trusty, upstream, xenial): DNE 38, ignored 21, not-affected 10, needs-triage 3, released 3. | https://ubuntu.com/security/CVE-2019-8720 |
| ベンダー | 製品 | バージョン | 生の CPE |
|---|---|---|---|
| webkitgtk | webkitgtk | < 2.26.0 | cpe:2.3:a:webkitgtk:webkitgtk:*:*:*:*:*:*:*:* |
| wpewebkit | wpe_webkit | < 2.26.0 | cpe:2.3:a:wpewebkit:wpe_webkit:*:*:*:*:*:*:*:* |
| redhat | codeready_linux_builder | 8.0 | cpe:2.3:a:redhat:codeready_linux_builder:8.0:*:*:*:*:*:*:* |
| redhat | codeready_linux_builder_eus | 8.4 | cpe:2.3:a:redhat:codeready_linux_builder_eus:8.4:*:*:*:*:*:*:* |
| redhat | codeready_linux_builder_eus | 8.6 | cpe:2.3:a:redhat:codeready_linux_builder_eus:8.6:*:*:*:*:*:*:* |
| redhat | codeready_linux_builder_for_arm64_eus | 8.0 | cpe:2.3:a:redhat:codeready_linux_builder_for_arm64_eus:8.0:*:*:*:*:*:*:* |
| redhat | codeready_linux_builder_for_arm64_eus | 8.4 | cpe:2.3:a:redhat:codeready_linux_builder_for_arm64_eus:8.4:*:*:*:*:*:*:* |
| redhat | codeready_linux_builder_for_arm64_eus | 8.6 | cpe:2.3:a:redhat:codeready_linux_builder_for_arm64_eus:8.6:*:*:*:*:*:*:* |
| redhat | codeready_linux_builder_for_ibm_z_systems_eus | 8.0 | cpe:2.3:a:redhat:codeready_linux_builder_for_ibm_z_systems_eus:8.0:*:*:*:*:*:*:* |
| redhat | codeready_linux_builder_for_ibm_z_systems_eus | 8.4 | cpe:2.3:a:redhat:codeready_linux_builder_for_ibm_z_systems_eus:8.4:*:*:*:*:*:*:* |
| redhat | codeready_linux_builder_for_ibm_z_systems_eus | 8.6 | cpe:2.3:a:redhat:codeready_linux_builder_for_ibm_z_systems_eus:8.6:*:*:*:*:*:*:* |
| redhat | codeready_linux_builder_for_power_little_endian_eus | 8.0 | cpe:2.3:a:redhat:codeready_linux_builder_for_power_little_endian_eus:8.0:*:*:*:*:*:*:* |
| redhat | codeready_linux_builder_for_power_little_endian_eus | 8.4 | cpe:2.3:a:redhat:codeready_linux_builder_for_power_little_endian_eus:8.4:*:*:*:*:*:*:* |
| redhat | codeready_linux_builder_for_power_little_endian_eus | 8.6 | cpe:2.3:a:redhat:codeready_linux_builder_for_power_little_endian_eus:8.6:*:*:*:*:*:*:* |
| redhat | enterprise_linux | 8.0 | cpe:2.3:o:redhat:enterprise_linux:8.0:*:*:*:*:*:arm64:* |
| redhat | enterprise_linux_desktop | 7.0 | cpe:2.3:o:redhat:enterprise_linux_desktop:7.0:*:*:*:*:*:*:* |
| redhat | enterprise_linux_eus | 8.4 | cpe:2.3:o:redhat:enterprise_linux_eus:8.4:*:*:*:*:*:*:* |
| redhat | enterprise_linux_eus | 8.4 | cpe:2.3:o:redhat:enterprise_linux_eus:8.4:*:*:*:*:*:arm64:* |
| redhat | enterprise_linux_eus | 8.6 | cpe:2.3:o:redhat:enterprise_linux_eus:8.6:*:*:*:*:*:*:* |
| redhat | enterprise_linux_eus | 8.6 | cpe:2.3:o:redhat:enterprise_linux_eus:8.6:*:*:*:*:*:arm64:* |
| redhat | enterprise_linux_for_arm64_eus | 8.6 | cpe:2.3:o:redhat:enterprise_linux_for_arm64_eus:8.6:*:*:*:*:*:*:* |
| redhat | enterprise_linux_for_ibm_z_systems | 7.0 | cpe:2.3:o:redhat:enterprise_linux_for_ibm_z_systems:7.0:*:*:*:*:*:*:* |
| redhat | enterprise_linux_for_ibm_z_systems | 8.0 | cpe:2.3:o:redhat:enterprise_linux_for_ibm_z_systems:8.0:*:*:*:*:*:*:* |
| redhat | enterprise_linux_for_ibm_z_systems_eus | 8.4 | cpe:2.3:o:redhat:enterprise_linux_for_ibm_z_systems_eus:8.4:*:*:*:*:*:*:* |
| redhat | enterprise_linux_for_ibm_z_systems_eus | 8.6 | cpe:2.3:o:redhat:enterprise_linux_for_ibm_z_systems_eus:8.6:*:*:*:*:*:*:* |
| redhat | enterprise_linux_for_power_big_endian | 7.0 | cpe:2.3:o:redhat:enterprise_linux_for_power_big_endian:7.0:*:*:*:*:*:*:* |
| redhat | enterprise_linux_for_power_little_endian | 7.0 | cpe:2.3:o:redhat:enterprise_linux_for_power_little_endian:7.0:*:*:*:*:*:*:* |
| redhat | enterprise_linux_for_power_little_endian | 8.0 | cpe:2.3:o:redhat:enterprise_linux_for_power_little_endian:8.0:*:*:*:*:*:*:* |
| redhat | enterprise_linux_for_power_little_endian_eus | 8.4 | cpe:2.3:o:redhat:enterprise_linux_for_power_little_endian_eus:8.4:*:*:*:*:*:*:* |
| redhat | enterprise_linux_for_power_little_endian_eus | 8.6 | cpe:2.3:o:redhat:enterprise_linux_for_power_little_endian_eus:8.6:*:*:*:*:*:*:* |
| redhat | enterprise_linux_for_scientific_computing | 7.0 | cpe:2.3:o:redhat:enterprise_linux_for_scientific_computing:7.0:*:*:*:*:*:*:* |
| redhat | enterprise_linux_server | 7.0 | cpe:2.3:o:redhat:enterprise_linux_server:7.0:*:*:*:*:*:*:* |
| redhat | enterprise_linux_server_aus | 8.4 | cpe:2.3:o:redhat:enterprise_linux_server_aus:8.4:*:*:*:*:*:*:* |
| redhat | enterprise_linux_server_aus | 8.6 | cpe:2.3:o:redhat:enterprise_linux_server_aus:8.6:*:*:*:*:*:*:* |
| redhat | enterprise_linux_server_for_power_little_endian_update_services_for_sap_solutions | 8.4 | cpe:2.3:o:redhat:enterprise_linux_server_for_power_little_endian_update_services_for_sap_solutions:8.4:*:*:*:*:*:*:* |
| redhat | enterprise_linux_server_for_power_little_endian_update_services_for_sap_solutions | 8.6 | cpe:2.3:o:redhat:enterprise_linux_server_for_power_little_endian_update_services_for_sap_solutions:8.6:*:*:*:*:*:*:* |
| redhat | enterprise_linux_server_tus | 8.4 | cpe:2.3:o:redhat:enterprise_linux_server_tus:8.4:*:*:*:*:*:*:* |
| redhat | enterprise_linux_server_tus | 8.6 | cpe:2.3:o:redhat:enterprise_linux_server_tus:8.6:*:*:*:*:*:*:* |
| redhat | enterprise_linux_server_update_services_for_sap_solutions | 8.4 | cpe:2.3:o:redhat:enterprise_linux_server_update_services_for_sap_solutions:8.4:*:*:*:*:*:*:* |
| redhat | enterprise_linux_server_update_services_for_sap_solutions | 8.6 | cpe:2.3:o:redhat:enterprise_linux_server_update_services_for_sap_solutions:8.6:*:*:*:*:*:*:* |
| redhat | enterprise_linux_workstation | 7.0 | cpe:2.3:o:redhat:enterprise_linux_workstation:7.0:*:*:*:*:*:*:* |
| URL | タグ |
|---|---|
| https://bugzilla.redhat.com/show_bug.cgi?id=1876611 | Issue Tracking Third Party Advisory |
| https://webkitgtk.org/security/WSA-2019-0005.html | Vendor Advisory |
| https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2019-8720 | US Government Resource |