CVE-2026-96951(microsoft outlook web)の深刻度・悪用状況・対象バージョン
8.8 重要(CVSS 3.x) 悪用確認済み(CISA KEV) EPSS 取得中…
概要
Improper neutralization of special elements used in a command ('command injection') in Windows Shell allows an unauthorized attacker to bypass a security feature over a network.
実際の攻撃で悪用されています。 CISA KEV への追加日: 2026-10-13。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: Apply mitigations in accordance with vendor instructions, ensuring compliance with CISA’s BOD 26-04 Prioritizing Security Updates Based on Risk (see URL in Notes) guidance and CISA’s “Forensics Triage Requirements” (see URL in Notes). Follow applicable BOD 26-04 guidance for cloud services or discontinue use of the product if mitigations are unavailable. Stakeholders are responsible for evaluating each asset's internet exposure and ensuring adherence to BOD 26-04 patching guidelines.
CISA の要求対応: Apply mitigations in accordance with vendor instructions, ensuring compliance with CISA’s BOD 26-04 Prioritizing Security Updates Based on Risk (see URL in Notes) guidance and CISA’s “Forensics Triage Requirements” (see URL in Notes). Follow applicable BOD 26-04 guidance for cloud services or discontinue use of the product if mitigations are unavailable. Stakeholders are responsible for evaluating each asset's internet exposure and ensuring adherence to BOD 26-04 patching guidelines.
影響を受ける製品
| ベンダー | 製品 | 対象バージョン |
|---|---|---|
| microsoft | outlook_web | すべて/記載なし |
| microsoft | windows_10_1607 | < 10.0.14393.9612 |
| microsoft | windows_10_1607 | < 10.0.14393.9612 |
| microsoft | windows_10_1809 | < 10.0.17763.9376 |
| microsoft | windows_10_1809 | < 10.0.17763.9376 |
| microsoft | windows_10_21h2 | < 10.0.19044.7807 |
| microsoft | windows_10_21h2 | < 10.0.19044.7807 |
| microsoft | windows_10_21h2 | < 10.0.19044.7807 |
| microsoft | windows_10_22h2 | < 10.0.19045.7807 |
| microsoft | windows_10_22h2 | < 10.0.19045.7807 |
| microsoft | windows_10_22h2 | < 10.0.19045.7807 |
| microsoft | windows_11_23h2 | < 10.0.22631.7652 |
| microsoft | windows_11_23h2 | < 10.0.22631.7652 |
| microsoft | windows_11_24h2 | < 10.0.26100.9711 |
| microsoft | windows_11_24h2 | < 10.0.26100.9711 |
基本情報
- 公開日
- 2026-10-13
- 最終更新
- 2026-10-29
- NVD の状態
- Analyzed
- 弱点の種類
- CWE-77
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-2026-96951 を検索 できます。
参考情報
- https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-96951 PatchVendor Advisory
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2026-96951 US Government Resource
- NVD: CVE-2026-96951
- CVE.org: CVE-2026-96951
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。