📊 SecuPortal 日次脆弱性ダイジェスト

2026-09-20 19:58:49 生成 · 2026-09-14〜2026-09-20 (7日分)
新規 KEV 6 | 更新ソフト 0 | 対象期間 7日 | 生成 2026-09-20 19:58:49

📦 更新された主要ソフトウェア


主要ソフトの更新なし


非主要製品 の更新: 0件(OS ディストリ / Alpine 派生など、要対応度は低い)


🔴 ★★★ 要対応 CVE


本日の要対応該当なし


(今回のダイジェストに含まれる 6 件はいずれも is_major_product=false で、CVSS も 9.0 以上のものが無く、ransomware も Unknown のため ★★★ の条件を満たすものはありません)


🟠 ★★ 参考 CVE


展開して表示 (6件)
  • CVE-2025-39682 — Linux Kernel (CVSS 未公表, KEV) : TLS 受信パスでゼロ長レコードが recvmsg() のレコード種別処理を回避し、以降の TLS レコードが誤った zero-copy/キューイング前提で処理される可能性がある。KEV 登録済みだが自社運用対象は PRODUCTS 辞書の OSS 中心で、影響はホスト OS のカーネル版数次第。EoL/EoS 版が対象に含まれる旨の記載があるため、稼働カーネルが保守対象内かを公式アドバイザリで確認するのが妥当。
  • CVE-2025-39964 — Linux Kernel (CVSS 未公表, KEV) : 同一 AF_ALG ソケットへの並行書き込みによるレースコンディション。ローカルからの利用が前提と考えられ、リモート攻撃面は限定的な可能性がある。自社サーバで AF_ALG(カーネル暗号 API のユーザ空間インタフェース)を能動的に使う構成は一般的でなく、影響度は低いと見られる。
  • CVE-2026-53266 — Linux Kernel (CVSS 未公表, KEV, EPSS 0.00121) : ebtables SNAT ターゲットにおける境界外書き込み。ebtables(ブリッジ用フィルタ)を構成していること自体が前提となるため、通常の Web/DB サーバ構成では該当しない可能性が高い。EPSS も 0.1% 程度と低い。
  • CVE-2026-58704 — Google Pixel (CVSS 8.8, KEV, EPSS 0.00112) : セルラーモデムの認可不備による権限昇格。AV=A(隣接ネットワーク)で近接性が必要。自社の運用対象はサーバ/OSS ソフトウェアであり、Pixel 端末が業務利用されているかは端末管理側で確認が必要だが、インフラ側への影響はないと考えられる。
  • CVE-2026-76460 — Cisco Identity Services Engine (CVSS 未公表, KEV) : 特権 API の誤用により、未認証のリモート攻撃者が Web 管理インタフェースの認証を回避しデバイスへ不正アクセスできる可能性がある。未認証リモートという点で危険度は高いが、Cisco ISE / ISE-PIC は自社では使用していないエンタープライズ機器のため直接影響はない見込み。
  • CVE-2026-87886 — Acronis Backup (CVSS 未公表, KEV) : cPanel & WHM 用プラグイン / Plesk 用拡張の既定パーミッション不備による権限昇格。cPanel・Plesk といったホスティング管理パネルは自社運用構成に含まれないため、該当しない可能性が高い。


  • 📝 AI 全体サマリ


    展開して読む
  • 全体トレンド: 2026-09-14〜09-20 の期間は、新規 KEV 登録 6 件のみでソフトウェア更新情報の入力は 0 件でした。6 件中 3 件が Linux Kernel(TLS 受信パス、AF_ALG レース、ebtables 境界外書き込み)で、いずれもカーネル内サブシステムの実装不備に集中しています。残る 3 件は Google Pixel(モデム)、Cisco ISE、Acronis Backup プラグインで、自社の運用対象外の製品・機器に該当する可能性が高い構成です。
  • 特記事項: 今回の KEV 登録分は CVSS スコアが未公表のものが多く(6 件中 5 件)、機械的なスコア基準だけでは優先度を判断しきれません。KEV 登録という事実自体が実際の悪用を示すため、Linux Kernel 3 件については稼働中のカーネル版数と各ディストリのセキュリティアドバイザリ(Ubuntu USN / RHEL RHSA 等)の対応状況を照合しておくのが安全です。特に CVE-2025-39682 と CVE-2026-53266 は EoL/EoS 版が影響対象に含まれる旨の記載があるため、サポート期限切れのカーネルが残っていないかの棚卸しを推奨します。なお Cisco ISE の CVE-2026-76460 は未認証リモートでの管理インタフェース認証回避であり、自社では未使用ながら、取引先・グループ会社で利用がある場合は注意喚起の価値があると考えられます。
  • PoC 検証の推奨: 今回の 6 件はいずれもカーネル/ファームウェア/商用製品プラグインが対象で、コンテナ上での再現が困難(カーネル脆弱性はホストカーネルを共有するため Docker では検証不可)なため、PoC 検証環境の構築は推奨しません。もし Linux Kernel 3 件の挙動確認を行う場合は、Docker ではなく KVM/QEMU 等で使い捨ての VM を立て、対象版数のカーネルを入れた隔離環境で行う形が適切です。骨子としては「①ホストから隔離されたブリッジなし NAT ネットワークの VM を用意 → ②ディストリ公式リポジトリから脆弱版カーネルを取得して起動 → ③ebtables / AF_ALG / kTLS を有効化した最小構成を作り、パッチ前後でカーネルログの差異を観測」という範囲までに留め、攻撃コードの作成は行わない方針とします。実施可否は公式アドバイザリと社内の検証環境ポリシーで確認してください。


  • 原本データ (JSON) — 表示するにはクリック
    {
      "range": {
        "from": "2026-09-14",
        "to": "2026-09-20",
        "days": 7
      },
      "summary": {
        "total_kev_new": 6,
        "total_software_update": 0,
        "by_date": {
          "2026-09-19": {
            "kev_new": 3,
            "software_update": 0
          },
          "2026-09-17": {
            "kev_new": 3,
            "software_update": 0
          }
        }
      },
      "kev_new": [
        {
          "digest_date": "2026-09-19",
          "key": "CVE-2025-39682",
          "cve_id": "CVE-2025-39682",
          "vendor_project": "Linux",
          "product": "Kernel",
          "vulnerability_name": "Linux Kernel Improper Check for Unusual or Exceptional Conditions Vulnerability",
          "date_added": "2026-09-18",
          "short_description": "Linux Kernel contains an improper check for unusual or exceptional conditions vulnerability in the TLS receive path which allows a zero-length record retrieved from the rx_list to bypass the intended recvmsg() record-type handling, potentially causing subsequent TLS records to be processed using incorrect zero-copy and queuing assumptions. The impacted product(s) could be end-of-life (EoL) and/or end-of-service (EoS). Users are advised to discontinue use and/or transition to a supported version.",
          "required_action": "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.",
          "due_date": "2026-09-21",
          "known_ransomware": "Unknown",
          "cvss_score": null,
          "cvss_severity": null,
          "cvss_vector": null,
          "attack_vector": null,
          "is_remote": null,
          "is_major_product": false,
          "matched_product": null,
          "title_en": null,
          "epss_score": null
        },
        {
          "digest_date": "2026-09-19",
          "key": "CVE-2025-39964",
          "cve_id": "CVE-2025-39964",
          "vendor_project": "Linux",
          "product": "Kernel",
          "vulnerability_name": "Linux Kernel Race Condition Vulnerability",
          "date_added": "2026-09-18",
          "short_description": "Linux Kernel contains a race condition vulnerability which allows concurrent writes to the same AF_ALG socket causing data to be unpredictably interleaved and creating inconsistencies in the socket's internal state.",
          "required_action": "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.",
          "due_date": "2026-09-21",
          "known_ransomware": "Unknown",
          "cvss_score": null,
          "cvss_severity": null,
          "cvss_vector": null,
          "attack_vector": null,
          "is_remote": null,
          "is_major_product": false,
          "matched_product": null,
          "title_en": null,
          "epss_score": null
        },
        {
          "digest_date": "2026-09-19",
          "key": "CVE-2026-53266",
          "cve_id": "CVE-2026-53266",
          "vendor_project": "Linux",
          "product": "Kernel",
          "vulnerability_name": "Linux Kernel Out-of-Bounds Write Vulnerability",
          "date_added": "2026-09-18",
          "short_description": "Linux Kernel contains an out-of-bounds write vulnerability in the ebtables SNAT target which allows an ARP sender hardware address rewrite to write directly into a nonlinear socket-buffer fragment backed by a splice-imported file page. The impacted product(s) could be end-of-life (EoL) and/or end-of-service (EoS). Users are advised to discontinue use and/or transition to a supported version.",
          "required_action": "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.",
          "due_date": "2026-09-21",
          "known_ransomware": "Unknown",
          "cvss_score": null,
          "cvss_severity": null,
          "cvss_vector": null,
          "attack_vector": null,
          "is_remote": null,
          "is_major_product": false,
          "matched_product": null,
          "title_en": "In the Linux kernel, the following vulnerability has been resolved:\n\nnetfilter: bridge: make ebt_snat ARP rewrite writable\n\nThe ebtables SNAT target keeps the Ethernet source address rewrite\nbehind skb_ensure_writable(skb, 0).  This is intentional: at the bridge\nebtables hooks the Ethernet header is addressed through\nskb_mac_header()/eth_hdr(), while skb->data points at the Ethernet\npayload.  Asking skb_ensure_writable() for ETH_HLEN bytes would check\nthe payload, not the Ethernet header, and wo",
          "epss_score": 0.00121
        },
        {
          "digest_date": "2026-09-17",
          "key": "CVE-2026-58704",
          "cve_id": "CVE-2026-58704",
          "vendor_project": "Google",
          "product": "Pixel",
          "vulnerability_name": "Google Pixel Improper Authorization Vulnerability",
          "date_added": "2026-09-16",
          "short_description": "Google Pixel devices contain an improper authorization vulnerability in the cellular modem. A logic error may allow an attacker to bypass permission checks and escalate privileges.",
          "required_action": "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.",
          "due_date": "2026-09-19",
          "known_ransomware": "Unknown",
          "cvss_score": 8.8,
          "cvss_severity": "HIGH",
          "cvss_vector": "CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
          "attack_vector": "A",
          "is_remote": true,
          "is_major_product": false,
          "matched_product": null,
          "title_en": "In Cellular Modem, there is a possible permission bypass due to a logic error in the code. This could lead to remote (proximal/adjacent) escalation of privilege with no additional execution privileges needed. User interaction is not needed for exploitation.",
          "epss_score": 0.00112
        },
        {
          "digest_date": "2026-09-17",
          "key": "CVE-2026-76460",
          "cve_id": "CVE-2026-76460",
          "vendor_project": "Cisco",
          "product": "Identity Services Engine",
          "vulnerability_name": "Cisco Identity Services Engine Incorrect Use of Privileged APIs Vulnerability",
          "date_added": "2026-09-16",
          "short_description": "Cisco Identity Services Engine (ISE) and Cisco ISE Passive Identity Connector (ISE-PIC) contain an incorrect use of privileged APIs vulnerability that could allow an unauthenticated, remote attacker to gain unauthorized access to the affected device by bypassing the web-based management interface.",
          "required_action": "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.",
          "due_date": "2026-09-19",
          "known_ransomware": "Unknown",
          "cvss_score": null,
          "cvss_severity": null,
          "cvss_vector": null,
          "attack_vector": null,
          "is_remote": null,
          "is_major_product": false,
          "matched_product": null,
          "title_en": null,
          "epss_score": null
        },
        {
          "digest_date": "2026-09-17",
          "key": "CVE-2026-87886",
          "cve_id": "CVE-2026-87886",
          "vendor_project": "Acronis",
          "product": "Backup",
          "vulnerability_name": "Acronis Backup Incorrect Default Permissions Vulnerability",
          "date_added": "2026-09-16",
          "short_description": "Acronis Backup plugin for cPanel & WHM and extension for Plesk contains an incorrect default permissions vulnerability that could allow for privilege escalation.",
          "required_action": "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.",
          "due_date": "2026-09-19",
          "known_ransomware": "Unknown",
          "cvss_score": null,
          "cvss_severity": null,
          "cvss_vector": null,
          "attack_vector": null,
          "is_remote": null,
          "is_major_product": false,
          "matched_product": null,
          "title_en": null,
          "epss_score": null
        }
      ],
      "software_update": []
    }