by Kastro
Paper/Archive/CVE-2023-27992

CVE-2023-27992

Zyxel NAS326 firmware — Zyxel Multiple NAS Devices Command Injection Vulnerability

KEV · due 14 JulEPSS 82%public exploitSSVC actCVSS 9.8
critical.is priorityof 100
99
CVSS 9.8 (CNA)9.8 / 10 × 3029.4In CISA KEV+3030.0EPSS percentile 99.7.997 × 2019.9Exploit: SSVC active+1010.0SSVC exploitation: active+1010.0
Description · from the CVE record

The pre-authentication command injection vulnerability in the Zyxel NAS326 firmware versions prior to V5.21(AAZF.14)C0, NAS540 firmware versions prior to V5.21(AATB.11)C0, and NAS542 firmware versions prior to V5.21(ABAG.11)C0 could allow an unauthenticated attacker to execute some operating system (OS) commands remotely by sending a crafted HTTP request.

Affected

ProductAffectedFixed inSource
NAS326 firmware< V5.21(AAZF.14)C0–CNA
NAS540 firmware< V5.21(AATB.11)C0–CNA
NAS542 firmware< V5.21(ABAG.11)C0–CNA

Scores by source

Zyxel (CNA)9.8CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CISA ADPSSVCExploitation: active · Automatable: yes · Technical impact: total

References

refzyxel.com/global/en/support/security-advisories/zyxel-security-advisory-for-pre-authentication-command-injection-vulnerability-in-nas-productsrefcisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2023-27992kevcisa.gov/known-exploited-vulnerabilities-catalog