RCE in Zyxel Atp100
CVE-2020-9054
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…
Vulnerability class: Command Injection (OS Command Injection)
EPSS: 1.000 (100.0th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.
Affected products
Weakness classification (CWE)
CISA KEV (Known Exploited Vulnerabilities)
This CVE is on the CISA KEV catalog, added on . CISA KEV inclusion means CISA has confirmed in-the-wild exploitation; US federal agencies are required to remediate within a published due date.
BOD 22-01 due date: .
Required action: Apply updates per vendor instructions.
Public proof-of-concept exploits
References
- cret@cert.org (Third Party Advisory, x_refsource_MISC)
- cret@cert.org (x_refsource_CONFIRM, Vendor Advisory)
- cret@cert.org (US Government Resource, x_refsource_CERT-VN, Third Party Advisory, third-party-advisory)
- cret@cert.org (US Government Resource, Third Party Advisory, x_refsource_MISC)
- cret@cert.org (Exploit, Third Party Advisory, x_refsource_MISC)
- 134c704f-9b21-4f2e-91b3-4a467353bcc0 (US Government Resource)
Frequently asked questions
- What is CVE-2020-9054?
- CVE-2020-9054 is a critical-severity vulnerability in Zyxel Atp100, classified under OS Command Injection. CVSS score: 9.8/10. Published 2020-03-04.
- How severe is CVE-2020-9054?
- Critical severity. CVSS v3 base score is 9.8 out of 10.
- Is CVE-2020-9054 known to be exploited?
- Yes. CVE-2020-9054 is listed in the CISA Known Exploited Vulnerabilities catalog (added 2022-03-25), indicating it is being actively exploited. 18 public proof-of-concept repositories are indexed.