CVE-2021-27878
Veritas Backup Exec Agent Command Execution Vulnerability
- 대응 우선순위
- 최우선
- CVSS
- 8.8
- EPSS
- 24.0% 백분위 97.6% · 2026.06.27 기준
- CISA KEV
- 등록
- 조치 기한
- 2023.04.28
- 공개일
- 2021.03.02
CISA KEV에 등록된 실제 악용 확인 취약점
An issue was discovered in Veritas Backup Exec before 21.2. The communication between a client and an Agent requires successful authentication, which is typically completed over a secure TLS communication. However, due to a vulnerability in the SHA Authentication scheme, an attacker is able to gain unauthorized access and complete the authentication process. Subsequently, the client can execute data management protocol commands on the authenticated connection. The attacker could use one of these commands to execute an arbitrary command on the system using system privileges.
공급사 Veritas
제품 Backup Exec Agent
영향 버전 n/a, < 21.2
수정 버전 21.2
Apply updates per vendor instructions.
조치 기한: 2023.04.28CVSS 벡터 CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
CWE CWE-287
KEV 등록일 2023.04.07
랜섬웨어 캠페인 사용 확인됨
CISA 비고 https://www.veritas.com/support/en_US/security/VTS21-001; https://nvd.nist.gov/vuln/detail/CVE-2021-27878
EPSS 데이터 기준일 2026.06.27