CVE-2026-20128（cisco catalyst sd-wan manager）の深刻度・悪用状況・対象バージョン
7.5 重要（CVSS 3.x） 悪用確認済み（CISA KEV） EPSS 取得中…
概要
A vulnerability in the Data Collection Agent (DCA) feature of Cisco Catalyst SD-WAN Manager could allow an unauthenticated, remote attacker to gain DCA user privileges on an affected system. This vulnerability is due to the presence of a credential file for the DCA user on an affected system. An attacker could exploit this vulnerability by sending a crafted HTTP request and reading the file that contains the DCA password from that affected system. A successful exploit could allow the attacker to access another affected system and gain DCA user privileges. Note: Cisco Catalyst SD-WAN Manager releases 20.18 and later are not affected by this vulnerability.
実際の攻撃で悪用されています。 CISA KEV への追加日: 2026-04-20。対象製品を使っている場合は最優先で対策してください。
CISA の要求対応: Please adhere to CISA’s guidelines to assess exposure and mitigate risks associated with Cisco SD-WAN devices as outlines in CISA’s Emergency Directive 26-03 (URL listed below in Notes) and CISA’s “Hunt & Hardening Guidance for Cisco SD-WAN Devices (URL listed below in Notes). Adhere to the applicable BOD 22-01 guidance for cloud services or discontinue use of the product if mitigations are not available.
CISA の要求対応: Please adhere to CISA’s guidelines to assess exposure and mitigate risks associated with Cisco SD-WAN devices as outlines in CISA’s Emergency Directive 26-03 (URL listed below in Notes) and CISA’s “Hunt & Hardening Guidance for Cisco SD-WAN Devices (URL listed below in Notes). Adhere to the applicable BOD 22-01 guidance for cloud services or discontinue use of the product if mitigations are not available.
影響を受ける製品
| ベンダー | 製品 | 対象バージョン |
|---|---|---|
| cisco | catalyst_sd-wan_manager | < 20.9.8.2 |
| cisco | catalyst_sd-wan_manager | ≥ 20.10 かつ < 20.12.5.3 |
| cisco | catalyst_sd-wan_manager | ≥ 20.13 かつ < 20.15.4.2 |
| cisco | catalyst_sd-wan_manager | ≥ 20.16 かつ < 20.18 |
| cisco | catalyst_sd-wan_manager | 20.12.6 |
基本情報
- 公開日
- 2026-02-25
- 最終更新
- 2026-06-17
- NVD の状態
- Analyzed
- 弱点の種類
- CWE-257
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-2026-20128 を検索 できます。
参考情報
- https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-sdwan-authbp-qwCX8D4v Vendor Advisory
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2026-20128 US Government Resource
- NVD: CVE-2026-20128
- CVE.org: CVE-2026-20128
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。