최우선 대응긴급CISA KEV · 실제 악용 확인
CVE-2026-56164
Microsoft SharePoint Server Missing Authentication for Critical Function Vulnerability
- 대응 우선순위
- 최우선
- CVSS
- 9.8
- EPSS
- - 백분위 -
- CISA KEV
- 등록
- 조치 기한
- 2026.07.17
- 공개일
- 2026.07.15
최우선 대응 판단
CISA KEV에 등록된 실제 악용 확인 취약점
실제 악용확인
EPSS-
EPSS 백분위-
설명
Missing authentication for critical function in Microsoft Office SharePoint allows an unauthorized attacker to elevate privileges over a network.
영향 제품·버전
제품 Microsoft SharePoint Enterprise Server 2016, Microsoft SharePoint Server 2019, Microsoft SharePoint Server Subscription Edition
영향 버전 Microsoft SharePoint Enterprise Server 2016, Microsoft SharePoint Server 2019, Microsoft SharePoint Server Subscription Edition >= 16.0.0 < 16.0.5561.1001, >= 16.0.0 < 16.0.10417.20175, >= 16.0.0 < 16.0.19725.20434, < 16.0.19725.20434, 2016, 2019
수정 버전 Microsoft SharePoint Enterprise Server 2016, Microsoft SharePoint Server 2019, Microsoft SharePoint Server Subscription Edition 16.0.19725.20434
취약점 확인 및 조치방법
영향 여부, 우선 대응, 정식 해결과 결과 확인 절차를 요약합니다.
CISA 공식 요구조치
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.
조치 기한: 2026.07.17Microsoft SharePoint Enterprise Server 2016, Microsoft SharePoint Server 2019, Microsoft SharePoint Server Subscription Edition의 현재 전체 버전이 공식 영향 범위(Microsoft SharePoint Enterprise Server 2016, Microsoft SharePoint Server 2019, Microsoft SharePoint Server Subscription Edition >= 16.0.0 < 16.0.5561.1001, >= 16.0.0 < 16.0.10417.20175, >= 16.0.0 < 16.0.19725.20434, < 16.0.19725.20434, 2016, 2019)에 포함되는지 확인합니다. OS를 선택하면 해당 OS의 제품·패키지·KB·APAR 확인 명령만 표시됩니다.
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.
패치 후 같은 명령으로 전체 버전을 다시 확인해 Microsoft SharePoint Enterprise Server 2016, Microsoft SharePoint Server 2019, Microsoft SharePoint Server Subscription Edition 16.0.19725.20434 기준을 충족하는지 확인합니다. 이어서 인증 우회 관련 오류·공격 흔적이 새로 발생하지 않는지 확인합니다.
확인·조치·완료 확인제품·버전·노출 여부 확인부터 즉시 완화, 공식 조치와 완료 검증까지 실무 순서로 표시합니다.
취약점 확인 및 조치방법 보기 →기술 정보
CVSS 벡터 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CWE CWE-306
KEV 등록일 2026.07.14
랜섬웨어 캠페인 사용 미확인
CISA 비고 https://msrc.microsoft.com/update-guide/en-US/vulnerability/CVE-2026-56164 ; BOD 26-04: https://www.cisa.gov/news-events/directives/bod-26-04-prioritizing-security-updates-based-risk ; Forensics Triage Requirements: https://www.cisa.gov/news-events/directives/bod-26-04-implementation-guidance-prioritizing-security-updates-based-risk ; https://nvd.nist.gov/vuln/detail/CVE-2026-56164