Zyxel USG20(W)-VPN series firmware

Name: Zyxel USG20(W)-VPN series firmware
Brand: Zyxel

productEU

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

EPSS ≥ 10%

by severity

1critical1high2medium0low

updated 2026-10-28

vulnerabilities (28)

Related CVEs.

sort

ID	severity	EPSS	exploitable	patched	published	affected
CVE-2024-11667US	critical9.8OT critical	2.93% (87th)	KEV	no fix	2024-11-27	≤ versions V5.10 through V5.38
CVE-2023-33012US	—	9.88% (96th)	Exploit	no fix	2023-07-17	≤ 5.10 through 5.36 Patch 2
CVE-2025-9133US	—OT elevated	5.46% (93rd)	—	no fix	2025-10-21	≤ versions from V4.16 through V5.40
CVE-2025-11730US	—	1.45% (73rd)	—	no fix	2026-02-05	≤ versions from V5.35 through V5.41
CVE-2025-8078US	—	1.45% (73rd)	—	no fix	2025-10-21	≤ versions from V4.16 through V5.40
CVE-2024-42060US	—	1.34% (71st)	—	no fix	2024-09-03	≤ versions V4.16 through V5.38
CVE-2024-42059US	—	1.34% (71st)	—	no fix	2024-09-03	≤ versions V5.00 through V5.38
CVE-2023-6398US	—	1.33% (71st)	—	no fix	2024-02-20	≤ version 4.16 through 5.37 Patch 1
CVE-2024-42057US	—	1.32% (71st)	—	no fix	2024-09-03	≤ versions V4.16 through V5.38
CVE-2023-6764US	—	0.89% (59th)	—	no fix	2024-02-20	2 versions
CVE-2023-4398US	high7.5	0.88% (59th)	—	no fix	2023-11-28	≤ versions 4.16 through 5.37
CVE-2023-34141US	—	0.68% (52nd)	—	no fix	2023-07-17	≤ 5.00 through 5.36 Patch 2
CVE-2023-34138US	—	0.68% (52nd)	—	no fix	2023-07-17	≤ 4.60 through 5.36 Patch 2
CVE-2023-6399US	medium6.5	0.65% (51st)	—	no fix	2024-02-20	≤ version 4.16 through 5.37 Patch 1
CVE-2024-42058US	—	0.62% (50th)	—	no fix	2024-09-03	≤ versions V5.20 through V5.38
CVE-2024-6343US	—	0.60% (49th)	—	no fix	2024-09-03	≤ versions V4.16 through V5.38
CVE-2026-14818US	—	0.57% (47th)	—	no fix	2026-08-04	≤ from V4.16 through V5.42 Patch 1
CVE-2023-35139US	medium6.1	0.46% (40th)	—	no fix	2023-11-28	≤ versions 5.10 through 5.37
CVE-2023-28767US	—	0.40% (34th)	—	no fix	2023-07-17	≤ 5.10 through 5.36
CVE-2023-33011US	—	0.34% (27th)	—	no fix	2023-07-17	≤ 5.10 through 5.36 Patch 2
CVE-2024-42061US	—	0.31% (24th)	—	no fix	2024-09-03	≤ versions V4.16 through V5.38
CVE-2023-34140US	—	0.30% (23rd)	—	no fix	2023-07-17	≤ 4.16 through 5.36 Patch 2
CVE-2023-35136US	—	0.24% (15th)	—	no fix	2023-11-28	≤ versions 4.16 through 5.37
CVE-2023-4397US	—	0.23% (14th)	—	no fix	2023-11-28	≤ 5.37
CVE-2023-37926US	—	0.22% (13th)	—	no fix	2023-11-28	≤ versions 4.16 through 5.37
CVE-2023-37925US	—	0.22% (12th)	—	no fix	2023-11-28	≤ versions 4.16 through 5.37
CVE-2023-5650US	—	0.21% (12th)	—	no fix	2023-11-28	≤ versions 4.16 through 5.37
CVE-2023-5797US	—	0.21% (11th)	—	no fix	2023-11-28	≤ versions 4.16 through 5.37

weaknesses (8)

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

CWE-78Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')10 CVEs
CWE-120Buffer Copy without Checking Size of Input ('Classic Buffer Overflow')4 CVEs
CWE-134Use of Externally-Controlled Format String3 CVEs
CWE-269Improper Privilege Management3 CVEs
CWE-119Improper Restriction of Operations within the Bounds of a Memory Buffer2 CVEs
CWE-22Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')2 CVEs
CWE-79Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')2 CVEs
CWE-190Integer Overflow or Wraparound1 CVEs

sources (1)

Which sources assert this record, and when.

EUEU Vulnerability Database (ENISA)28 CVEs

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