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CVE-2023-27992: Zyxel Multiple NAS Devices Command Injection Vulnerability

criticalknown exploitedCVE-2023-27992
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 that could allow an unauthenticated attacker to execute commands remotely via a crafted HTTP request.

CSIRTS triage

vendor: ZyxelRemote code execution
What
A pre-authentication command injection vulnerability allows unauthenticated attackers to execute commands remotely.
Who is affected
Users of multiple Zyxel NAS devices.
Urgency
Immediate remediation is necessary due to the critical nature and active exploitation of the vulnerability.
Action
Update the firmware of 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
2023-06-23
Exploitation
Observed in the wild (CISA KEV)

Original advisory: https://nvd.nist.gov/vuln/detail/CVE-2023-27992

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-2023-27992coverage & exploitation statusNVD · CVE.org

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