CVE-2025-3935
ConnectWise ScreenConnect Improper Authentication Vulnerability
- 대응 우선순위
- 최우선
- CVSS
- 7.2
- EPSS
- 3.29% 백분위 86.9% · 2026.06.27 기준
- CISA KEV
- 등록
- 조치 기한
- 2025.06.23
- 공개일
- 2025.04.26
CISA KEV에 등록된 실제 악용 확인 취약점
ScreenConnect versions 25.2.3 and earlier versions may be susceptible to a ViewState code injection attack. ASP.NET Web Forms use ViewState to preserve page and control state, with data encoded using Base64 protected by machine keys. It is important to note that to obtain these machine keys, privileged system level access must be obtained. If these machine keys are compromised, attackers could create and send a malicious ViewState to the website, potentially leading to remote code execution on the server. The risk does not originate from a vulnerability introduced by ScreenConnect, but from...
공급사 ConnectWise
제품 ScreenConnect
영향 버전 <25.2.3, < 25.2.4
수정 버전 25.2.4
Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.
조치 기한: 2025.06.23CVSS 벡터 CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
CWE CWE-287, CWE-502
KEV 등록일 2025.06.02
랜섬웨어 캠페인 사용 미확인
CISA 비고 https://www.connectwise.com/company/trust/security-bulletins/screenconnect-security-patch-2025.4 ; https://nvd.nist.gov/vuln/detail/CVE-2025-3935
EPSS 데이터 기준일 2026.06.27