CVE-2026-20045（cisco unified communications manager）の深刻度・悪用状況・対象バージョン
概要
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.
CISA の要求対応: Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.
影響を受ける製品
| ベンダー | 製品 | 対象バージョン |
|---|---|---|
| cisco | unified_communications_manager | ≥ 12.5 かつ < 14su5 |
| cisco | unified_communications_manager | ≥ 12.5 かつ < 14su5 |
| cisco | unified_communications_manager | ≥ 15.0 かつ ≤ 15su3a |
| cisco | unified_communications_manager | ≥ 15.0 かつ ≤ 15su3a |
| cisco | unified_communications_manager_im_and_presence_service | ≥ 12.5 かつ < 14su5 |
| cisco | unified_communications_manager_im_and_presence_service | ≥ 15.0 かつ ≤ 15su3a |
| cisco | unity_connection | ≥ 12.5 かつ < 14su5 |
| cisco | unity_connection | ≥ 15.0 かつ ≤ 15su3 |
基本情報
- 公開日
- 2026-01-21
- 最終更新
- 2026-06-17
- NVD の状態
- Analyzed
- 弱点の種類
- CWE-94
対策の進め方
- 上の表で、使っている製品とバージョンが対象か確認します。
- ベンダーの公式アドバイザリ（下の参考情報の「Vendor Advisory」「Patch」）で修正版・回避策を確認します。
- 悪用が確認されているため、パッチ適用までの間もアクセス制限・侵害の痕跡確認を検討します。
- 日本語の情報は JVN iPedia で CVE-2026-20045 を検索 できます。
参考情報
- https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-voice-rce-mORhqY4b Vendor Advisory
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2026-20045 US Government Resource
- NVD: CVE-2026-20045
- CVE.org: CVE-2026-20045
データ出典: NIST NVD、CISA KEV、FIRST EPSS。翻訳は参考情報で、正確性は原文を優先してください。