A vulnerability in Cisco Unified Communications Manager (Unified CM), Cisco Unified Communications Manager Session Management Edition (Unified CM SME), Cisco Unified Communications Manager IM & Presence Service (Unified CM IM&P), Cisco Unity Connection, and Cisco Webex Calling Dedicated Instance could allow an unauthenticated, remote attacker to execute arbitrary commands on the underlying operating system of an affected device. This vulnerability is due to improper validation of user-supplied input in HTTP requests. An attacker could exploit this vulnerability by sending a sequence of crafted HTTP requests to the web-based management interface of an affected device. A successful exploit could allow the attacker to obtain user-level access to the underlying operating system and then elevate privileges to root. Note: Cisco has assigned this security advisory a Security Impact Rating (SIR) of Critical rather than High as the score indicates. The reason is that exploitation of this vulnerability could result in an attacker elevating privileges to root.
総合評価: CVE-2026-20045 は在野悪用が確認された重大脅威（89.6/100）。CVSS 深刻度は高。悪用される可能性が高い（EPSS 4.31%、90 パーセンタイル） 根拠: CISA KEV に登録（追加日 2026-01-21）。Cisco / Unified Communications Manager が対象で、弱点分類 CWE-94の悪用が確認されています。未認証でリモート管理権限を奪取されるリスクが極めて高い。 推奨対応: CISA の対応期限を過ぎています。緊急のパッチ適用を最優先に検討してください。
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。
: Cisco Unified Communications Products Code Injection Vulnerability · CISA KEV の詳細
: 2026-01-21
: 2026-02-11
: Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.
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 | 3.93% | 4.31% | +0.38% |
| 2 | 2026-06-13 | 3.61% | 3.93% | +0.32% |
| 3 | 2026-06-12 | — | 3.61% | — |
EPSS の全履歴 （全 23 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 |
|---|---|---|---|---|---|---|
| 8.2 | 3.1 | HIGH |
|
3.9 | 4.2 | [email protected] |
| 9.8 | 3.1 | CRITICAL |
|
3.9 | 5.9 | [email protected] |
| ベンダー | 製品 | バージョン | 生の CPE |
|---|---|---|---|
| cisco | unified_communications_manager | >= 12.5, < 14su5 | cpe:2.3:a:cisco:unified_communications_manager:*:*:*:*:-:*:*:* |
| cisco | unified_communications_manager | >= 12.5, < 14su5 | cpe:2.3:a:cisco:unified_communications_manager:*:*:*:*:session_management:*:*:* |
| cisco | unified_communications_manager | >= 15.0, <= 15su3a | cpe:2.3:a:cisco:unified_communications_manager:*:*:*:*:-:*:*:* |
| cisco | unified_communications_manager | >= 15.0, <= 15su3a | cpe:2.3:a:cisco:unified_communications_manager:*:*:*:*:session_management:*:*:* |
| cisco | unified_communications_manager_im_and_presence_service | >= 12.5, < 14su5 | cpe:2.3:a:cisco:unified_communications_manager_im_and_presence_service:*:*:*:*:*:*:*:* |
| cisco | unified_communications_manager_im_and_presence_service | >= 15.0, <= 15su3a | cpe:2.3:a:cisco:unified_communications_manager_im_and_presence_service:*:*:*:*:*:*:*:* |
| cisco | unity_connection | >= 12.5, < 14su5 | cpe:2.3:a:cisco:unity_connection:*:*:*:*:*:*:*:* |
| cisco | unity_connection | >= 15.0, <= 15su3 | cpe:2.3:a:cisco:unity_connection:*:*:*:*:*:*:*:* |