Zyxel VPN series Firmware

Name: Zyxel VPN series Firmware
Brand: Zyxel

productEU

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

by severity

4critical12high7medium0low

updated 2026-10-27

vulnerabilities (37)

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	≤ 4.60 through 5.21 Patch 1
CVE-2023-28771US	—OT critical	99.3% (100th)	KEV	no fix	2023-04-25	≤ 4.60 through 5.35
CVE-2023-33010US	critical9.8OT critical	29.0% (98th)	KEV	no fix	2023-05-24	≤ 4.30 through 5.36 Patch 1
CVE-2023-33009US	—OT critical	28.1% (98th)	KEV	no fix	2023-05-24	≤ 4.60 through 5.36 Patch 1
CVE-2023-33012US	—	9.88% (96th)	Exploit	no fix	2023-07-17	≤ 5.00 through 5.36 Patch 2
CVE-2022-30526US	high7.8	1.13% (66th)	Exploit	no fix	2022-07-19	≤ 4.30 through 5.30
CVE-2022-0342US	critical9.8	95.1% (100th)	—	no fix	2022-03-28	≤ 4.30 through 5.20
CVE-2022-0734US	medium6.1	9.40% (95th)	—	no fix	2022-05-24	≤ 4.35 through 5.20
CVE-2022-26531US	high7.8	6.17% (93rd)	—	no fix	2022-05-24	≤ 4.30 through 5.21
CVE-2022-26532US	high7.8	4.83% (92nd)	—	no fix	2022-05-24	≤ 4.30 through 5.21
CVE-2022-38547US	high7.2	2.83% (87th)	—	no fix	2023-02-07	≤ 4.30 through 5.32
CVE-2021-35029US	critical9.8	2.25% (83rd)	—	no fix	2021-07-02	≤ 4.35 through 5.01
CVE-2023-27991US	high8.8	1.45% (73rd)	—	no fix	2023-04-24	≤ 4.30 through 5.35
CVE-2022-2030US	medium6.5	1.35% (71st)	—	no fix	2022-07-19	≤ 4.30 through 5.30
CVE-2023-22913US	high8.1	1.29% (70th)	—	no fix	2023-04-24	≤ 4.30 through 5.35
CVE-2023-22915US	high7.5	1.05% (64th)	—	no fix	2023-04-24	≤ 4.30 through 5.35
CVE-2023-22914US	high7.2	1.03% (64th)	—	no fix	2023-04-24	≤ 4.30 through 5.35
CVE-2023-4398US	high7.5	0.88% (59th)	—	no fix	2023-11-28	≤ versions 4.30 through 5.37
CVE-2023-22917US	high7.5	0.88% (59th)	—	no fix	2023-04-24	≤ 5.00 through 5.35
CVE-2023-22918US	medium6.5	0.77% (55th)	—	no fix	2023-04-24	≤ 4.30 through 5.35
CVE-2023-34139US	high8.8	0.76% (55th)	—	no fix	2023-07-17	≤ 4.20 through 5.36 Patch 2
CVE-2022-0910US	medium6.5	0.73% (54th)	—	no fix	2022-05-24	≤ 4.32 through 5.21
CVE-2023-22916US	high8.1	0.69% (53rd)	—	no fix	2023-04-24	≤ 5.00 through 5.35
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-2023-35139US	medium6.1	0.46% (40th)	—	no fix	2023-11-28	≤ versions 5.00 through 5.37
CVE-2023-28767US	—	0.40% (34th)	—	no fix	2023-07-17	≤ 5.00 through 5.36
CVE-2022-40603US	medium6.1	0.39% (33rd)	—	no fix	2022-12-06	≤ 4.30 through 5.31
CVE-2023-27990US	medium4.8	0.34% (27th)	—	no fix	2023-04-24	≤ 4.30 through 5.35
CVE-2023-33011US	—	0.34% (27th)	—	no fix	2023-07-17	≤ 5.00 through 5.36 Patch 2
CVE-2023-34140US	—	0.30% (23rd)	—	no fix	2023-07-17	≤ 4.30 through 5.36 Patch 2
CVE-2023-35136US	—	0.24% (15th)	—	no fix	2023-11-28	≤ versions 4.30 through 5.37
CVE-2023-37926US	—	0.22% (13th)	—	no fix	2023-11-28	≤ versions 4.30 through 5.37
CVE-2023-5960US	—	0.22% (12th)	—	no fix	2023-11-28	≤ versions 4.30 through 5.37
CVE-2023-37925US	—	0.22% (12th)	—	no fix	2023-11-28	≤ versions 4.30 through 5.37
CVE-2023-5650US	—	0.21% (12th)	—	no fix	2023-11-28	≤ versions 4.30 through 5.37
CVE-2023-5797US	—	0.21% (11th)	—	no fix	2023-11-28	≤ versions 4.30 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')6 CVEs
CWE-269Improper Privilege Management5 CVEs
CWE-79Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')5 CVEs
CWE-20Improper Input Validation3 CVEs
CWE-287Improper Authentication3 CVEs
CWE-22Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')2 CVEs
CWE-119Improper Restriction of Operations within the Bounds of a Memory Buffer1 CVEs

sources (1)

Which sources assert this record, and when.

EUEU Vulnerability Database (ENISA)37 CVEs

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