CVE-2023-28771
Zyxel Multiple Firewalls OS Command Injection Vulnerability
- 대응 우선순위
- 최우선
- CVSS
- 9.8
- EPSS
- 99.3% 백분위 99.9% · 2026.06.27 기준
- CISA KEV
- 등록
- 조치 기한
- 2023.06.21
- 공개일
- 2023.04.25
CISA KEV에 등록된 실제 악용 확인 취약점
Improper error message handling in Zyxel ZyWALL/USG series firmware versions 4.60 through 4.73, VPN series firmware versions 4.60 through 5.35, USG FLEX series firmware versions 4.60 through 5.35, and ATP series firmware versions 4.60 through 5.35, which could allow an unauthenticated attacker to execute some OS commands remotely by sending crafted packets to an affected device.
공급사 Zyxel
제품 Multiple Firewalls
영향 버전 4.60 through 4.73, 4.60 through 5.35, >= 4.60 < 5.36, >= 4.60 < 5.35, >= 4.60 < 4.73, 4.73
수정 버전 5.36, 5.35, 4.73
Apply updates per vendor instructions.
조치 기한: 2023.06.21CVSS 벡터 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CWE CWE-78
KEV 등록일 2023.05.31
랜섬웨어 캠페인 사용 미확인
CISA 비고 https://www.zyxel.com/global/en/support/security-advisories/zyxel-security-advisory-for-remote-command-injection-vulnerability-of-firewalls; https://nvd.nist.gov/vuln/detail/CVE-2023-28771
EPSS 데이터 기준일 2026.06.27