The VMware vCenter Server contains an out-of-bounds read vulnerability in the implementation of the DCERPC protocol. A malicious actor with network access to vCenter Server may trigger an out-of-bounds read by sending a specially crafted packet leading to denial-of-service of certain services (vmcad, vmdird, and vmafdd).
総合評価: CVE-2023-20896 は中リスク（43/100）。CVSS 深刻度は中。悪用される可能性が高い（EPSS 0.90%、55 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 | 2026-06-23 | 0.80% | 0.90% | +0.10% |
| 2 | 2026-06-15 | 0.36% | 0.80% | +0.44% |
| 3 | 2026-03-17 | — | 0.36% | — |
EPSS の全履歴 （全 9 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 |
|---|---|---|---|---|---|---|
| 5.9 | 3.1 | MEDIUM |
|
2.2 | 3.6 | [email protected] |
| 7.5 | 3.1 | HIGH |
|
3.9 | 3.6 | [email protected] |
| ベンダー | 製品 | バージョン | 生の CPE |
|---|---|---|---|
| vmware | vcenter_server | >= 4.0, < 7.0 | cpe:2.3:a:vmware:vcenter_server:*:*:*:*:*:*:*:* |
| vmware | vcenter_server | 7.0 | cpe:2.3:a:vmware:vcenter_server:7.0:-:*:*:*:*:*:* |
| vmware | vcenter_server | 7.0 | cpe:2.3:a:vmware:vcenter_server:7.0:a:*:*:*:*:*:* |
| vmware | vcenter_server | 7.0 | cpe:2.3:a:vmware:vcenter_server:7.0:b:*:*:*:*:*:* |
| vmware | vcenter_server | 7.0 | cpe:2.3:a:vmware:vcenter_server:7.0:c:*:*:*:*:*:* |
| vmware | vcenter_server | 7.0 | cpe:2.3:a:vmware:vcenter_server:7.0:d:*:*:*:*:*:* |
| vmware | vcenter_server | 7.0 | cpe:2.3:a:vmware:vcenter_server:7.0:update1:*:*:*:*:*:* |
| vmware | vcenter_server | 7.0 | cpe:2.3:a:vmware:vcenter_server:7.0:update1a:*:*:*:*:*:* |
| vmware | vcenter_server | 7.0 | cpe:2.3:a:vmware:vcenter_server:7.0:update1c:*:*:*:*:*:* |
| vmware | vcenter_server | 7.0 | cpe:2.3:a:vmware:vcenter_server:7.0:update1d:*:*:*:*:*:* |
| vmware | vcenter_server | 7.0 | cpe:2.3:a:vmware:vcenter_server:7.0:update2:*:*:*:*:*:* |
| vmware | vcenter_server | 7.0 | cpe:2.3:a:vmware:vcenter_server:7.0:update2a:*:*:*:*:*:* |
| vmware | vcenter_server | 7.0 | cpe:2.3:a:vmware:vcenter_server:7.0:update2b:*:*:*:*:*:* |
| vmware | vcenter_server | 7.0 | cpe:2.3:a:vmware:vcenter_server:7.0:update2c:*:*:*:*:*:* |
| vmware | vcenter_server | 7.0 | cpe:2.3:a:vmware:vcenter_server:7.0:update2d:*:*:*:*:*:* |
| vmware | vcenter_server | 7.0 | cpe:2.3:a:vmware:vcenter_server:7.0:update3:*:*:*:*:*:* |
| vmware | vcenter_server | 7.0 | cpe:2.3:a:vmware:vcenter_server:7.0:update3a:*:*:*:*:*:* |
| vmware | vcenter_server | 7.0 | cpe:2.3:a:vmware:vcenter_server:7.0:update3c:*:*:*:*:*:* |
| vmware | vcenter_server | 7.0 | cpe:2.3:a:vmware:vcenter_server:7.0:update3d:*:*:*:*:*:* |
| vmware | vcenter_server | 7.0 | cpe:2.3:a:vmware:vcenter_server:7.0:update3e:*:*:*:*:*:* |
| vmware | vcenter_server | 7.0 | cpe:2.3:a:vmware:vcenter_server:7.0:update3f:*:*:*:*:*:* |
| vmware | vcenter_server | 7.0 | cpe:2.3:a:vmware:vcenter_server:7.0:update3g:*:*:*:*:*:* |
| vmware | vcenter_server | 7.0 | cpe:2.3:a:vmware:vcenter_server:7.0:update3h:*:*:*:*:*:* |
| vmware | vcenter_server | 7.0 | cpe:2.3:a:vmware:vcenter_server:7.0:update3i:*:*:*:*:*:* |
| vmware | vcenter_server | 7.0 | cpe:2.3:a:vmware:vcenter_server:7.0:update3j:*:*:*:*:*:* |
| vmware | vcenter_server | 7.0 | cpe:2.3:a:vmware:vcenter_server:7.0:update3k:*:*:*:*:*:* |
| vmware | vcenter_server | 7.0 | cpe:2.3:a:vmware:vcenter_server:7.0:update3l:*:*:*:*:*:* |
| vmware | vcenter_server | 8.0 | cpe:2.3:a:vmware:vcenter_server:8.0:-:*:*:*:*:*:* |
| vmware | vcenter_server | 8.0 | cpe:2.3:a:vmware:vcenter_server:8.0:a:*:*:*:*:*:* |
| vmware | vcenter_server | 8.0 | cpe:2.3:a:vmware:vcenter_server:8.0:b:*:*:*:*:*:* |
| vmware | vcenter_server | 8.0 | cpe:2.3:a:vmware:vcenter_server:8.0:c:*:*:*:*:*:* |
| vmware | vcenter_server | 8.0 | cpe:2.3:a:vmware:vcenter_server:8.0:update1:*:*:*:*:*:* |
| vmware | vcenter_server | 8.0 | cpe:2.3:a:vmware:vcenter_server:8.0:update1a:*:*:*:*:*:* |