Integer overflows were discovered in the functions grub_cmd_initrd and grub_initrd_init in the efilinux component of GRUB2, as shipped in Debian, Red Hat, and Ubuntu (the functionality is not included in GRUB2 upstream), leading to a heap-based buffer overflow. These could be triggered by an extremely large number of arguments to the initrd command on 32-bit architectures, or a crafted filesystem with very large files on any architecture. An attacker could use this to execute arbitrary code and bypass UEFI Secure Boot restrictions. This issue affects GRUB2 version 2.04 and prior versions.
総合評価: CVE-2020-15707 は悪用リスクが高い（64.7/100）。CVSS 深刻度は中。悪用される可能性が高い（EPSS 1.59%、72 パーセンタイル） 根拠: 公開エクスプロイトが 1 件参照されています（Exploit-DB）。 直近 1 日で EPSS が +1.55% 上昇。悪用への関心が高まっている可能性があります。 推奨対応: 公開エクスプロイトが確認されています。影響範囲の確認、緩和策の適用、パッチ適用を優先してください。
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。
| EDB-ID | ソース | 種別 | 公開 | リンク |
|---|---|---|---|---|
| — | nvd_ref | exploit_tag | Exploit-DB ↗ |
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 | 0.04% | 1.59% | +1.55% |
| 2 | 2025-11-21 | 0.38% | 0.04% | -0.34% |
| 3 | 2025-11-18 | — | 0.38% | — |
EPSS の全履歴 （全 12 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 |
|---|---|---|---|---|---|---|
| 5.7 | 3.1 | MEDIUM |
|
0.5 | 5.2 | [email protected] |
| 6.4 | 3.1 | MEDIUM |
|
0.5 | 5.9 | [email protected] |
| 4.4 | 2.0 | MEDIUM |
|
3.4 | 6.4 | [email protected] |
| vendor | priority | summary | link |
|---|---|---|---|
alpine
|
medium | CVE-2020-15707: 1 source package rows (grub); 7 state rows across 7 repos (3.17-main, 3.18-main, 3.19-main, 3.20-main, 3.21-main, 3.22-main, edge-main); fixed 7, open 0. | https://security.alpinelinux.org/vuln/CVE-2020-15707 |
debian
|
not yet assigned | CVE-2020-15707 not yet assigned priority: Debian including 1 source packages (grub2), 5 status rows across 5 suites (bookworm, bullseye, forky, sid, trixie): resolved 5. | https://security-tracker.debian.org/tracker/CVE-2020-15707 |
gentoo
|
normal | CVE-2020-15707: 1 GLSA(s) (202104-05), 1 atom(s) (sys-devel/grub); latest impact normal. | https://bugs.gentoo.org/buglist.cgi?quicksearch=CVE-2020-15707 |
redhat
|
medium | — | https://access.redhat.com/security/cve/CVE-2020-15707 |
ubuntu
|
medium | CVE-2020-15707 medium priority: Ubuntu including 3 source packages (grub2, grub2-signed, grub2-unsigned), 43 status rows across 15 suites (bionic, focal, groovy, hirsute, jammy, kinetic, lunar, mantic, noble, oracular, plucky, questing, trusty, upstream, xenial): not-affected 30, released 8, needs-triage 3, DNE 1, needed 1. | https://ubuntu.com/security/CVE-2020-15707 |
| ベンダー | 製品 | バージョン | 生の CPE |
|---|---|---|---|
| gnu | grub2 | <= 2.04 | cpe:2.3:a:gnu:grub2:*:*:*:*:*:*:*:* |
| redhat | enterprise_linux_atomic_host | — | cpe:2.3:a:redhat:enterprise_linux_atomic_host:-:*:*:*:*:*:*:* |
| redhat | openshift_container_platform | 4.0 | cpe:2.3:a:redhat:openshift_container_platform:4.0:*:*:*:*:*:*:* |
| redhat | enterprise_linux | 7.0 | cpe:2.3:o:redhat:enterprise_linux:7.0:*:*:*:*:*:*:* |
| redhat | enterprise_linux | 8.0 | cpe:2.3:o:redhat:enterprise_linux:8.0:*:*:*:*:*:*:* |
| microsoft | windows_10 | — | cpe:2.3:o:microsoft:windows_10:-:*:*:*:*:*:*:* |
| microsoft | windows_10 | 1607 | cpe:2.3:o:microsoft:windows_10:1607:*:*:*:*:*:*:* |
| microsoft | windows_10 | 1709 | cpe:2.3:o:microsoft:windows_10:1709:*:*:*:*:*:*:* |
| microsoft | windows_10 | 1803 | cpe:2.3:o:microsoft:windows_10:1803:*:*:*:*:*:*:* |
| microsoft | windows_10 | 1809 | cpe:2.3:o:microsoft:windows_10:1809:*:*:*:*:*:*:* |
| microsoft | windows_10 | 1903 | cpe:2.3:o:microsoft:windows_10:1903:*:*:*:*:*:*:* |
| microsoft | windows_10 | 1909 | cpe:2.3:o:microsoft:windows_10:1909:*:*:*:*:*:*:* |
| microsoft | windows_10 | 2004 | cpe:2.3:o:microsoft:windows_10:2004:*:*:*:*:*:*:* |
| microsoft | windows_8.1 | — | cpe:2.3:o:microsoft:windows_8.1:-:*:*:*:*:*:*:* |
| microsoft | windows_rt_8.1 | — | cpe:2.3:o:microsoft:windows_rt_8.1:-:*:*:*:*:*:*:* |
| microsoft | windows_server_2012 | — | cpe:2.3:o:microsoft:windows_server_2012:-:*:*:*:*:*:*:* |
| microsoft | windows_server_2012 | r2 | cpe:2.3:o:microsoft:windows_server_2012:r2:*:*:*:*:*:*:* |
| microsoft | windows_server_2016 | — | cpe:2.3:o:microsoft:windows_server_2016:-:*:*:*:*:*:*:* |
| microsoft | windows_server_2016 | 1903 | cpe:2.3:o:microsoft:windows_server_2016:1903:*:*:*:*:*:*:* |
| microsoft | windows_server_2016 | 1909 | cpe:2.3:o:microsoft:windows_server_2016:1909:*:*:*:*:*:*:* |
| microsoft | windows_server_2016 | 2004 | cpe:2.3:o:microsoft:windows_server_2016:2004:*:*:*:*:*:*:* |
| microsoft | windows_server_2019 | — | cpe:2.3:o:microsoft:windows_server_2019:-:*:*:*:*:*:*:* |
| canonical | ubuntu_linux | 14.04 | cpe:2.3:o:canonical:ubuntu_linux:14.04:*:*:*:esm:*:*:* |
| canonical | ubuntu_linux | 16.04 | cpe:2.3:o:canonical:ubuntu_linux:16.04:*:*:*:esm:*:*:* |
| canonical | ubuntu_linux | 18.04 | cpe:2.3:o:canonical:ubuntu_linux:18.04:*:*:*:lts:*:*:* |
| canonical | ubuntu_linux | 20.04 | cpe:2.3:o:canonical:ubuntu_linux:20.04:*:*:*:lts:*:*:* |
| debian | debian_linux | 10.0 | cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:* |
| opensuse | leap | 15.1 | cpe:2.3:o:opensuse:leap:15.1:*:*:*:*:*:*:* |
| opensuse | leap | 15.2 | cpe:2.3:o:opensuse:leap:15.2:*:*:*:*:*:*:* |
| suse | suse_linux_enterprise_server | 11 | cpe:2.3:o:suse:suse_linux_enterprise_server:11:*:*:*:*:*:*:* |
| suse | suse_linux_enterprise_server | 12 | cpe:2.3:o:suse:suse_linux_enterprise_server:12:*:*:*:*:*:*:* |
| suse | suse_linux_enterprise_server | 15 | cpe:2.3:o:suse:suse_linux_enterprise_server:15:*:*:*:*:*:*:* |
| netapp | active_iq_unified_manager | >= 9.5 | cpe:2.3:a:netapp:active_iq_unified_manager:*:*:*:*:*:vmware_vsphere:*:* |