CVE-2020-9054
Zyxel Multiple NAS Devices OS Command Injection Vulnerability
- 대응 우선순위
- 최우선
- CVSS
- 9.8
- EPSS
- 100.0% 백분위 100.0% · 2026.06.27 기준
- CISA KEV
- 등록
- 조치 기한
- 2022.04.15
- 공개일
- 2020.03.05
CISA KEV에 등록된 실제 악용 확인 취약점
Multiple ZyXEL network-attached storage (NAS) devices running firmware version 5.21 contain a pre-authentication command injection vulnerability, which may allow a remote, unauthenticated attacker to execute arbitrary code on a vulnerable device. ZyXEL NAS devices achieve authentication by using the weblogin.cgi CGI executable. This program fails to properly sanitize the username parameter that is passed to it. If the username parameter contains certain characters, it can allow command injection with the privileges of the web server that runs on the ZyXEL device. Although the web server doe...
공급사 Zyxel
제품 Multiple Network-Attached Storage (NAS) Devices
영향 버전 V5.21(AAZF.7)C0, V5.21(AASZ.3)C0, V5.21(AATB.4)C0, V5.21(ABAG.4)C0, all, V4.75(AALH.2)C0, V4.75(AANV.2)C0, V4.81(AAAJ.1)C0, V4.81(AALS.1)C0, < 5.21\(aazf.7\)c0, < 5.21\(aasz.3\)c0, < 5.21\(aatb.4\)c0, < 5.21\(abag.4\)c0, >= 4.35 < 4.35\(abps.3\)c0, >= 4.35 < 4.35\(abfw.3\)c0, >= 4.35 < 4.35\(abfu.3\)c0, >= 4.35 < 4.35\(abiq.3\)c0, >= 4.35 < 4.35\(abaq.3\)c0, >= 4.35 < 4.35\(abar.3\)c0, >= 4.35 < 4.35\(aala.3\)c0
수정 버전 5.21\(aazf.7\)c0, 5.21\(aasz.3\)c0, 5.21\(aatb.4\)c0, 5.21\(abag.4\)c0, 4.35\(abps.3\)c0, 4.35\(abfw.3\)c0, 4.35\(abfu.3\)c0, 4.35\(abiq.3\)c0, 4.35\(abaq.3\)c0, 4.35\(abar.3\)c0, 4.35\(aala.3\)c0, 4.35\(aalb.3\)c0, 4.35\(aaky.3\)c0, 4.35\(aakz.3\)c0, 4.35\(aaph.3\)c0, 4.35\(aapi.3\)c0, 4.35\(aapj.3\)c0, 4.35\(aapk.3\)c0, 4.35\(aapl.3\)c0, 4.35\(abae.3\)c0
Apply updates per vendor instructions.
조치 기한: 2022.04.15CVSS 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 2022.03.25
랜섬웨어 캠페인 사용 미확인
CISA 비고 https://nvd.nist.gov/vuln/detail/CVE-2020-9054
EPSS 데이터 기준일 2026.06.27