Zyxel Communications Corp. USG FLEX 500

Name: Zyxel Communications Corp. USG FLEX 500
Brand: Zyxel Communications Corp.

productRU

A product tracked in the threat graph; the vulnerabilities below are known to affect it.

by severity

2critical3high2medium0low

updated 2026-10-27

vulnerabilities (8)

Related CVEs.

sort

ID	severity	EPSS	exploitable	patched	published	affected
CVE-2022-30525US	critical9.8OT critical	99.9% (100th)	KEV	no fix	2022-05-12	≤ 5.30
CVE-2023-28771US	—OT critical	99.3% (100th)	KEV	no fix	2023-04-25	4.60 → 5.36
CVE-2020-29583US	critical9.8OT critical	90.2% (100th)	KEV	no fix	2020-12-22	≤ 4.60
CVE-2022-30526US	high7.8	1.13% (66th)	Exploit	no fix	2022-07-19	4.50 → 5.31
CVE-2023-27991US	high8.8	1.45% (73rd)	—	no fix	2023-04-24	4.50 → 5.36
CVE-2022-2030US	medium6.5	1.35% (71st)	—	no fix	2022-07-19	4.50 → 5.31
CVE-2023-22913US	high8.1	1.29% (70th)	—	no fix	2023-04-24	4.50 → 5.35
CVE-2023-27990US	medium4.8	0.34% (27th)	—	no fix	2023-04-24	4.50 → 5.36

The flaw types (CWEs) most of these CVEs share.

CWE-78Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')3 CVEs
CWE-79Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')2 CVEs
CWE-22Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')1 CVEs
CWE-269Improper Privilege Management1 CVEs
CWE-312Cleartext Storage of Sensitive Information1 CVEs
CWE-522Insufficiently Protected Credentials1 CVEs
CWE-77Improper Neutralization of Special Elements used in a Command ('Command Injection')1 CVEs

Which sources assert this record, and when.

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