CVE-2026-34909
Ubiquiti UniFi OS Path Traversal Vulnerability
- 대응 우선순위
- 최우선
- CVSS
- 10
- EPSS
- 2.27% 백분위 81.1% · 2026.07.17 기준
- CISA KEV
- 등록
- 조치 기한
- 2026.06.26
- 공개일
- 2026.05.22
CISA KEV에 등록된 실제 악용 확인 취약점
A malicious actor with access to the network could exploit a Path Traversal vulnerability found in UniFi OS devices to access files on the underlying system that could be manipulated to access an underlying account.
제품 Ubiquiti Inc UniFi OS Server, Express, UDM
영향 버전 Ubiquiti Inc UniFi OS Server, Express, UDM < 5.0.8, < 5.1.12, < 5.1.11, < 5.1.10, < 4.0.14
수정 버전 Ubiquiti Inc UniFi OS Server, Express, UDM 5.0.8, 5.1.12, 5.1.11, 5.1.10, 4.0.14
영향 여부, 우선 대응, 정식 해결과 결과 확인 절차를 요약합니다.
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: 2026.06.26Ubiquiti Inc UniFi OS Server, Express, UDM의 현재 전체 버전이 공식 영향 범위(Ubiquiti Inc UniFi OS Server, Express, UDM < 5.0.8, < 5.1.12, < 5.1.11, < 5.1.10, < 4.0.14)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 Ubiquiti Inc UniFi OS Server, Express, UDM 5.0.8, 5.1.12, 5.1.11, 5.1.10, 4.0.14 기준을 충족하는지 확인합니다. 이어서 경로 조작·임의 파일 접근 관련 오류·공격 흔적이 새로 발생하지 않는지 확인합니다.
CVSS 벡터 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H
CWE CWE-22
KEV 등록일 2026.06.23
랜섬웨어 캠페인 사용 미확인
CISA 비고 https://community.ui.com/releases/Security-Advisory-Bulletin-064-064/84811c09-4cf4-42ab-bd61-cc994445963b ; 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-2026-34909
EPSS 데이터 기준일 2026.07.17