A vulnerability in an API endpoint of multiple Cisco Unified Communications Products could allow an unauthenticated, remote attacker to cause high CPU utilization, which could impact access to the web-based management interface and cause delays with call processing. This API is not used for device management and is unlikely to be used in normal operations of the device. This vulnerability is due to improper API authentication and incomplete validation of the API request. An attacker could exploit this vulnerability by sending a crafted HTTP request to a specific API on the device. A successful exploit could allow the attacker to cause a denial of service (DoS) condition due to high CPU utilization, which could negatively impact user traffic and management access. When the attack stops, the device will recover without manual intervention.
総合評価: CVE-2023-20259 は中リスク(50.4/100)。CVSS 深刻度は高。悪用される可能性が高い(EPSS 0.61%、44 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 | 2026-06-15 | 0.17% | 0.61% | +0.45% |
| 2 | 2026-05-29 | 0.14% | 0.17% | +0.02% |
| 3 | 2025-07-27 | — | 0.14% | — |
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 |
|---|---|---|---|---|---|---|
| 8.6 | 3.1 | HIGH |
|
3.9 | 4.0 | [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 |
|---|---|---|---|
| cisco | emergency_responder | 14su3 | cpe:2.3:a:cisco:emergency_responder:14su3:*:*:*:*:*:*:* |
| cisco | prime_collaboration_deployment | 14su3 | cpe:2.3:a:cisco:prime_collaboration_deployment:14su3:*:*:*:*:*:*:* |
| cisco | unified_communications_manager | 12.5\(1\)su7 | cpe:2.3:a:cisco:unified_communications_manager:12.5\(1\)su7:*:*:*:*:*:*:* |
| cisco | unified_communications_manager | 12.5\(1\)su7 | cpe:2.3:a:cisco:unified_communications_manager:12.5\(1\)su7:*:*:*:session_management:*:*:* |
| cisco | unified_communications_manager | 14su3 | cpe:2.3:a:cisco:unified_communications_manager:14su3:*:*:*:*:*:*:* |
| cisco | unified_communications_manager | 14su3 | cpe:2.3:a:cisco:unified_communications_manager:14su3:*:*:*:session_management:*:*:* |
| cisco | unified_communications_manager_im_\&_presence_service | 12.5\(1\)su7 | cpe:2.3:a:cisco:unified_communications_manager_im_\&_presence_service:12.5\(1\)su7:*:*:*:*:*:*:* |
| cisco | unified_communications_manager_im_\&_presence_service | 14su3 | cpe:2.3:a:cisco:unified_communications_manager_im_\&_presence_service:14su3:*:*:*:*:*:*:* |
| cisco | unity_connection | 14su3 | cpe:2.3:a:cisco:unity_connection:14su3:*:*:*:*:*:*:* |