최우선 대응긴급CISA KEV · 실제 악용 확인
CVE-2021-27877
Veritas Backup Exec Agent Improper Authentication Vulnerability
- 대응 우선순위
- 최우선
- CVSS
- 9.8
- EPSS
- 64.9% 백분위 99.1% · 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. It supports multiple authentication schemes: SHA authentication is one of these. This authentication scheme is no longer used in current versions of the product, but hadn't yet been disabled. An attacker could remotely exploit this scheme to gain unauthorized access to an Agent and execute privileged commands.
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:N/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-2021-27877
EPSS 데이터 기준일 2026.06.27