CVE-2023-27992

criticalknown exploitedcovered by 1 sourcefirst seen 2023-06-23

Actively exploited. CVE-2023-27992 is listed in the CISA Known Exploited Vulnerabilities catalog (added 2023-06-23) — exploitation has been observed in the wild, and US federal agencies are required to remediate it under BOD 22-01. Treat patching 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: Zyxel Remote 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.

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Exploitation outlook

Exploitation confirmedAlready exploited in the wild (CISA KEV) — the prediction phase is over. Patch now. Riskier than 100% of all EPSS-scored CVEs.

Advisory coverage (1)

criticalexploitedCVE-2023-27992: Zyxel Multiple NAS Devices Command Injection Vulnerabilitycisa-kev · 2023-06-23

External references

NVD record for CVE-2023-27992

CVE.org record

CISA KEV catalog

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