CVE-2020-9054
CRITICALCVSS 9.8Known ExploitedCISA Known Exploited Vulnerability
https://nvd.nist.gov/vuln/detail/CVE-2020-9054
Remediation deadline: April 15, 2022
Description
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.
Timeline
Published:March 4th, 2020 8:15 PM
Last modified:October 7th, 2026 6:17 PM
Added to KEV:March 25th, 2022
CVSS Scoring
CVSS v3: 9.8 (CRITICAL)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CVSS v2: 10.0
Affected Software
From NVD CPE configuration data
Vendors
zyxel
Products
nas326_firmwarenas520_firmwarenas540_firmwarenas542_firmwareatp100_firmwareatp200_firmwareatp500_firmwareatp800_firmwareusg20-vpn_firmwareusg20w-vpn_firmwareusg40_firmwareusg40w_firmwareusg60_firmwareusg60w_firmwareusg110_firmwareusg210_firmwareusg310_firmwareusg1100_firmwareusg1900_firmwareusg2200_firmware
Weaknesses (CWE)
References & Reports
Advisories, patches, and third-party reports
- https://cwe.mitre.org/data/definitions/78.htmlThird Party Advisory
- https://kb.cert.org/artifacts/cve-2020-9054.htmlThird Party Advisory
- https://kb.cert.org/vuls/id/498544/Third Party Advisory
- https://krebsonsecurity.com/2020/02/zyxel-fixes-0day-in-network-storage-devices/Exploit
- https://www.zyxel.com/support/remote-code-execution-vulnerability-of-NAS-products.shtmlVendor Advisory
- https://cwe.mitre.org/data/definitions/78.htmlThird Party Advisory
- https://kb.cert.org/artifacts/cve-2020-9054.htmlThird Party Advisory
- https://kb.cert.org/vuls/id/498544/Third Party Advisory
- https://krebsonsecurity.com/2020/02/zyxel-fixes-0day-in-network-storage-devices/Exploit
- https://www.zyxel.com/support/remote-code-execution-vulnerability-of-NAS-products.shtmlVendor Advisory
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2020-9054US Government Resource
Source: NIST NVD · Data may lag official sources by up to one minute