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CVE-2020-9054: Zyxel Multiple NAS Devices OS Command Injection Vulnerability

criticalknown exploitedpublic exploitCVE-2020-9054
Actively exploited. At least one CVE in this advisory is listed in the CISA Known Exploited Vulnerabilities catalog — exploitation has been observed in the wild. Treat remediation as urgent.
Multiple Zyxel network-attached storage (NAS) devices contain a pre-authentication command injection vulnerability, which may allow a remote, unauthenticated attacker to execute arbitrary code.

CSIRTS triage

vendor: ZyxelRemote code execution
What
A pre-authentication command injection vulnerability allows remote, unauthenticated attackers to execute arbitrary code.
Who is affected
Users of multiple Zyxel network-attached storage devices.
Urgency
Immediate remediation is required due to active exploitation and critical severity.
Action
Apply the latest firmware updates for the affected Zyxel NAS devices.

AI-assisted analysis generated from the source advisory — verify against the original.

Details

Source
CISA Known Exploited Vulnerabilities (US · database · site)
Severity
critical
Published
2022-03-25
Exploitation
Observed in the wild (CISA KEV)

Original advisory: https://nvd.nist.gov/vuln/detail/CVE-2020-9054

Exploitation outlook

EPSS (FIRST.org) estimates each CVE’s probability of exploitation in the next 30 days — here is the CSIRTS.com read on those numbers.

Referenced CVEs

CVECSIRTS overviewExternal
CVE-2020-9054coverage & exploitation statusNVD · CVE.org

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