There had existed in one of the ISC BIND libraries a bug in a function that was used by dhcpd when operating in DHCPv6 mode. There was also a bug in dhcpd relating to the use of this function per its documentation, but the bug in the library function prevented this from causing any harm. All releases of dhcpd from ISC contain copies of this, and other, BIND libraries in combinations that have been tested prior to release and are known to not present issues like this. Some third-party packagers of ISC software have modified the dhcpd source, BIND source, or version matchup in ways that create the crash potential. Based on reports available to ISC, the crash probability is large and no analysis has been done on how, or even if, the probability can be manipulated by an attacker. Affects: Builds of dhcpd versions prior to version 4.4.1 when using BIND versions 9.11.2 or later, or BIND versions with specific bug fixes backported to them. ISC does not have access to comprehensive version lists for all repackagings of dhcpd that are vulnerable. In particular, builds from other vendors may also be affected. Operators are advised to consult their vendor documentation.
総合評価: CVE-2019-6470 は悪用リスクが高い（79.1/100）。CVSS 深刻度は中。悪用される可能性が高い（EPSS 8.81%、94 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 +8.61% 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 | 0.20% | 8.81% | +8.61% |
| 2 | 2026-05-09 | 0.27% | 0.20% | -0.06% |
| 3 | 2025-11-21 | — | 0.27% | — |
EPSS の全履歴 （全 14 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 |
|
2.8 | 3.6 | [email protected] |
| 7.5 | 3.1 | HIGH |
|
3.9 | 3.6 | [email protected] |
| 5.0 | 2.0 | MEDIUM |
|
10.0 | 2.9 | [email protected] |
| vendor | priority | summary | link |
|---|---|---|---|
alpine
|
high | CVE-2019-6470: 2 source package rows (bind, dhcp); 246 state rows across 10 repos (3.11-main, 3.12-main, 3.17-main, 3.18-main, 3.19-main, 3.20-main, 3.21-main, 3.22-main, 3.23-main, edge-main); fixed 246, open 0. | https://security.alpinelinux.org/vuln/CVE-2019-6470 |
debian
|
not yet assigned | CVE-2019-6470 not yet assigned priority: Debian including 1 source packages (isc-dhcp), 4 status rows across 4 suites (bookworm, bullseye, sid, trixie): resolved 4. | https://security-tracker.debian.org/tracker/CVE-2019-6470 |
redhat
|
medium | — | https://access.redhat.com/security/cve/CVE-2019-6470 |
ubuntu
|
medium | CVE-2019-6470 medium priority: Ubuntu including 1 source packages (isc-dhcp), 6 status rows across 6 suites (bionic, cosmic, disco, trusty, upstream, xenial): not-affected 3, released 2, needs-triage 1. | https://ubuntu.com/security/CVE-2019-6470 |
| ベンダー | 製品 | バージョン | 生の CPE |
|---|---|---|---|
| isc | dhcpd | < 4.4.1 | cpe:2.3:a:isc:dhcpd:*:*:*:*:*:*:*:* |
| redhat | enterprise_linux | 8.0 | cpe:2.3:o:redhat:enterprise_linux:8.0:*:*:*:*:*:*:* |
| redhat | enterprise_linux_desktop | 7.0 | cpe:2.3:o:redhat:enterprise_linux_desktop:7.0:*:*:*:*:*:*:* |
| redhat | enterprise_linux_eus | 8.1 | cpe:2.3:o:redhat:enterprise_linux_eus:8.1:*:*:*:*:*:*:* |
| redhat | enterprise_linux_eus | 8.2 | cpe:2.3:o:redhat:enterprise_linux_eus:8.2:*:*:*:*:*:*:* |
| redhat | enterprise_linux_eus | 8.4 | cpe:2.3:o:redhat:enterprise_linux_eus:8.4:*:*:*:*:*:*:* |
| redhat | enterprise_linux_eus | 8.6 | cpe:2.3:o:redhat:enterprise_linux_eus:8.6:*:*:*:*:*:*:* |
| redhat | enterprise_linux_eus | 8.8 | cpe:2.3:o:redhat:enterprise_linux_eus:8.8:*:*:*:*:*:*:* |
| redhat | enterprise_linux_for_arm_64 | 8.0 | cpe:2.3:o:redhat:enterprise_linux_for_arm_64:8.0:*:*:*:*:*:*:* |
| redhat | enterprise_linux_for_arm_64_eus | 8.1_aarch64 | cpe:2.3:o:redhat:enterprise_linux_for_arm_64_eus:8.1_aarch64:*:*:*:*:*:*:* |
| redhat | enterprise_linux_for_arm_64_eus | 8.2_aarch64 | cpe:2.3:o:redhat:enterprise_linux_for_arm_64_eus:8.2_aarch64:*:*:*:*:*:*:* |
| redhat | enterprise_linux_for_arm_64_eus | 8.4_aarch64 | cpe:2.3:o:redhat:enterprise_linux_for_arm_64_eus:8.4_aarch64:*:*:*:*:*:*:* |
| redhat | enterprise_linux_for_arm_64_eus | 8.6_aarch64 | cpe:2.3:o:redhat:enterprise_linux_for_arm_64_eus:8.6_aarch64:*:*:*:*:*:*:* |
| redhat | enterprise_linux_for_arm_64_eus | 8.8_aarch64 | cpe:2.3:o:redhat:enterprise_linux_for_arm_64_eus:8.8_aarch64:*:*:*:*:*:*:* |
| 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 | 8.1_s390x | cpe:2.3:o:redhat:enterprise_linux_for_ibm_z_systems_eus:8.1_s390x:*:*:*:*:*:*:* |
| redhat | enterprise_linux_for_ibm_z_systems_eus | 8.2_s390x | cpe:2.3:o:redhat:enterprise_linux_for_ibm_z_systems_eus:8.2_s390x:*:*:*:*:*:*:* |
| redhat | enterprise_linux_for_ibm_z_systems_eus | 8.4_s390x | cpe:2.3:o:redhat:enterprise_linux_for_ibm_z_systems_eus:8.4_s390x:*:*:*:*:*:*:* |
| redhat | enterprise_linux_for_ibm_z_systems_eus | 8.6_s390x | cpe:2.3:o:redhat:enterprise_linux_for_ibm_z_systems_eus:8.6_s390x:*:*:*:*:*:*:* |
| redhat | enterprise_linux_for_ibm_z_systems_eus | 8.8_s390x | cpe:2.3:o:redhat:enterprise_linux_for_ibm_z_systems_eus:8.8_s390x:*:*:*:*:*:*:* |
| 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 | 8.1_ppc64le | cpe:2.3:o:redhat:enterprise_linux_for_power_little_endian_eus:8.1_ppc64le:*:*:*:*:*:*:* |
| redhat | enterprise_linux_for_power_little_endian_eus | 8.2_ppc64le | cpe:2.3:o:redhat:enterprise_linux_for_power_little_endian_eus:8.2_ppc64le:*:*:*:*:*:*:* |
| redhat | enterprise_linux_for_power_little_endian_eus | 8.4_ppc64le | cpe:2.3:o:redhat:enterprise_linux_for_power_little_endian_eus:8.4_ppc64le:*:*:*:*:*:*:* |
| redhat | enterprise_linux_for_power_little_endian_eus | 8.6_ppc64le | cpe:2.3:o:redhat:enterprise_linux_for_power_little_endian_eus:8.6_ppc64le:*:*:*:*:*:*:* |
| redhat | enterprise_linux_for_power_little_endian_eus | 8.8_ppc64le | cpe:2.3:o:redhat:enterprise_linux_for_power_little_endian_eus:8.8_ppc64le:*:*:*:*:*:*:* |
| 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 | 8.2 | cpe:2.3:o:redhat:enterprise_linux_server_aus:8.2:*:*:*:*:*:*:* |
| 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 | 8.1 | cpe:2.3:o:redhat:enterprise_linux_server_for_power_little_endian_update_services_for_sap_solutions:8.1:*:*:*:*:*:*:* |
| redhat | enterprise_linux_server_for_power_little_endian_update_services_for_sap_solutions | 8.2 | cpe:2.3:o:redhat:enterprise_linux_server_for_power_little_endian_update_services_for_sap_solutions:8.2:*:*:*:*:*:*:* |
| 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_for_power_little_endian_update_services_for_sap_solutions | 8.8 | cpe:2.3:o:redhat:enterprise_linux_server_for_power_little_endian_update_services_for_sap_solutions:8.8:*:*:*:*:*:*:* |
| redhat | enterprise_linux_server_tus | 8.2 | cpe:2.3:o:redhat:enterprise_linux_server_tus:8.2:*:*:*:*:*:*:* |
| 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_tus | 8.8 | cpe:2.3:o:redhat:enterprise_linux_server_tus:8.8:*:*:*:*:*:*:* |
| redhat | enterprise_linux_update_services_for_sap_solutions | 8.1 | cpe:2.3:o:redhat:enterprise_linux_update_services_for_sap_solutions:8.1:*:*:*:*:*:*:* |
| redhat | enterprise_linux_update_services_for_sap_solutions | 8.2 | cpe:2.3:o:redhat:enterprise_linux_update_services_for_sap_solutions:8.2:*:*:*:*:*:*:* |
| redhat | enterprise_linux_update_services_for_sap_solutions | 8.4 | cpe:2.3:o:redhat:enterprise_linux_update_services_for_sap_solutions:8.4:*:*:*:*:*:*:* |
| redhat | enterprise_linux_update_services_for_sap_solutions | 8.6 | cpe:2.3:o:redhat:enterprise_linux_update_services_for_sap_solutions:8.6:*:*:*:*:*:*:* |
| redhat | enterprise_linux_update_services_for_sap_solutions | 8.8 | cpe:2.3:o:redhat:enterprise_linux_update_services_for_sap_solutions:8.8:*:*:*:*:*:*:* |
| redhat | enterprise_linux_workstation | 7.0 | cpe:2.3:o:redhat:enterprise_linux_workstation:7.0:*:*:*:*:*:*:* |
| opensuse | leap | 15.0 | cpe:2.3:o:opensuse:leap:15.0:*:*:*:*:*:*:* |
| opensuse | leap | 15.1 | cpe:2.3:o:opensuse:leap:15.1:*:*:*:*:*:*:* |
| URL | タグ |
|---|---|
| https://access.redhat.com/errata/RHSA-2019:2060 | Third Party Advisory |
| https://access.redhat.com/errata/RHSA-2019:3525 | Third Party Advisory |
| https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=896122 | Exploit Mailing List Third Party Advisory |
| https://lists.opensuse.org/opensuse-security-announce/2019-10/msg00048.html | Mailing List Third Party Advisory |
| https://lists.opensuse.org/opensuse-security-announce/2019-10/msg00049.html | Mailing List Third Party Advisory |