A flaw was found in Open vSwitch that allows ICMPv6 Neighbor Advertisement packets between virtual machines to bypass OpenFlow rules. This issue may allow a local attacker to create specially crafted packets with a modified or spoofed target IP address field that can redirect ICMPv6 traffic to arbitrary IP addresses.
総合評価: CVE-2023-5366 は低リスク（31.4/100）。CVSS 深刻度は高。悪用される可能性が高い（EPSS 0.03%、9 パーセンタイル） 推奨対応: 悪用情報と EPSS の推移を監視し、必要に応じて優先度を見直してください。
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。
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 | 2025-11-21 | 0.11% | 0.03% | -0.08% |
| 2 | 2025-11-18 | 0.02% | 0.11% | +0.10% |
| 3 | 2025-04-15 | — | 0.02% | — |
EPSS の全履歴 （全 7 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 |
|---|---|---|---|---|---|---|
| 7.1 | 3.1 | HIGH |
|
2.8 | 4.2 | [email protected] |
| 5.5 | 3.1 | MEDIUM |
|
1.8 | 3.6 | [email protected] |
| vendor | priority | summary | link |
|---|---|---|---|
alpine
|
— | CVE-2023-5366: 1 source package rows (openvswitch); 38 state rows across 7 repos (3.18-community, 3.19-community, 3.20-community, 3.21-community, 3.22-community, 3.23-community, edge-community); fixed 19, open 19. | https://security.alpinelinux.org/vuln/CVE-2023-5366 |
debian
|
not yet assigned | CVE-2023-5366 not yet assigned priority: Debian including 1 source packages (openvswitch), 5 status rows across 5 suites (bookworm, bullseye, forky, sid, trixie): resolved 5. | https://security-tracker.debian.org/tracker/CVE-2023-5366 |
redhat
|
medium | — | https://access.redhat.com/security/cve/CVE-2023-5366 |
suse
|
high | CVE-2023-5366 severity important: SUSE including 154 source package names (latest:selinux-policy-20230523+git27.6fee49569-1.1, latest:selinux-policy-targeted-20230523+git27.6fee49569-1.1, …), 476 product×package rows across 40 product lines (Container suse/sl-micro/6.0/baremetal-os-container, Image SLE-Micro, … (40 product lines)): Fixed 476. | https://www.suse.com/security/cve/CVE-2023-5366/ |
ubuntu
|
medium | CVE-2023-5366 medium priority: Ubuntu including 1 source packages (openvswitch), 12 status rows across 12 suites (bionic, focal, jammy, lunar, mantic, noble, oracular, plucky, questing, trusty, upstream, xenial): released 8, ignored 3, needed 1. | https://ubuntu.com/security/CVE-2023-5366 |
| ベンダー | 製品 | バージョン | 生の CPE |
|---|---|---|---|
| openvswitch | openvswitch | < 2023-02-28 | cpe:2.3:a:openvswitch:openvswitch:*:*:*:*:*:*:*:* |
| redhat | openshift_container_platform | 4.0 | cpe:2.3:a:redhat:openshift_container_platform:4.0:*:*:*:*:*:*:* |
| redhat | virtualization | 4.0 | cpe:2.3:a:redhat:virtualization:4.0:*:*:*:*:*:*:* |
| redhat | enterprise_linux | 7.0 | cpe:2.3:o:redhat:enterprise_linux:7.0:*:*:*:*:*:*:* |
| redhat | fast_datapath | — | cpe:2.3:a:redhat:fast_datapath:-:*:*:*:*:*:*:* |