CVE-2022-30526

highpriority · track · 41EPSS 0.011 · 66 %ileexploit · weaponizedEURUUS

grimoire priorityP1 · Urgent

Exploitable?

Public exploit

2 exploits · weaponized

Likely / severe?

1.13% (66th) EPSS

CVSS 7.8 · high

Is it mine?

44 products

Check your exposure

Who says so?

4 sources

cnnvd · enisa_euvd · fstec_bdu · nvd

EPSS · scored 2026-10-27

A privilege escalation vulnerability was identified in the CLI command of Zyxel USG FLEX 100(W) firmware versions 4.50 through 5.30, USG FLEX 200 firmware versions 4.50 through 5.30, USG FLEX 500 firmware versions 4.50 through 5.30, USG FLEX 700 firmware versions 4.50 through 5.30, USG FLEX 50(W) firmware versions 4.16 through 5.30, USG20(W)-VPN firmware versions 4.16 through 5.30, ATP series firmware versions 4.32 through 5.30, VPN series firmware versions 4.30 through 5.30, USG/ZyWALL series firmware versions 4.09 through 4.72, which could allow a local attacker to execute some OS commands with root privileges in some directories on a vulnerable device.

cvss

Technical severity, 0–10. One row per scoring source.

7.8

010

base score 0–10 · higher = more severe · hover a vector to decode

v3.17.8highCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:Hprimary · NVD / NIST USexploitability 1.8 · impact 5.9

v3.17.8highAV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:Hsecondary · FSTEC (BDU) RU

v3.17.8highCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:Hsecondary · ENISA EU

v3.17.8highCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:Hsecondary · security@zyxel.com.twexploitability 1.8 · impact 5.9

v3.17.6highCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:Fsecondary · CVSS-BT (t0sche)

weaknesses

The CWE weakness classes this flaw belongs to.

CWE-269USprimaryCWE-269US

exploits (2)

Public proof-of-concept and weaponised exploit code.

exploit/linux/local/zyxel_suid_cp_lpeZyxel Firewall SUID Binary Privilege Escalationweaponized · metasploit
greek0x0/CVE-2022-30526Metasploit exploit for CVE-2022-30526PoC · poc_in_github

affected products (44)

Products and version ranges known to be affected.

Zyxel ATP series firmware≤ 4.32 through 5.30enisa_euvdEU
Zyxel USG 20(W)-VPN firmware≤ 4.16 through 5.30enisa_euvdEU
Zyxel USG FLEX 100(W) firmware≤ 4.50 through 5.30enisa_euvdEU
Zyxel USG FLEX 200 firmware≤ 4.50 through 5.30enisa_euvdEU
Zyxel USG FLEX 50(W) firmware≤ 4.16 through 5.30enisa_euvdEU
Zyxel USG FLEX 500 firmware≤ 4.50 through 5.30enisa_euvdEU
Zyxel USG FLEX 700 firmware≤ 4.50 through 5.30enisa_euvdEU
Zyxel USG/Zywall series Firmware≤ 4.09 through 4.72enisa_euvdEU
Zyxel VPN series Firmware≤ 4.30 through 5.30enisa_euvdEU
Zyxel Communications Corp. ATP4.32 → 5.31fstec_bduRU
Zyxel Communications Corp. USG4.09 → 4.72fstec_bduRU
Zyxel Communications Corp. USG FLEX 100W4.50 → 5.31fstec_bduRU
Zyxel Communications Corp. USG FLEX 2004.50 → 5.31fstec_bduRU
Zyxel Communications Corp. USG FLEX 50(W)4.16 → 5.31fstec_bduRU
Zyxel Communications Corp. USG FLEX 5004.50 → 5.31fstec_bduRU
Zyxel Communications Corp. USG FLEX 7004.50 → 5.31fstec_bduRU
Zyxel Communications Corp. USG USG20(W)-VPN4.16 → 5.31fstec_bduRU
Zyxel Communications Corp. VPN4.30 → 5.31fstec_bduRU
Zyxel Communications Corp. ZyWALL4.09 → 4.72fstec_bduRU
zyxel atp100 firmware4.32 → 5.30nvdUScpe:2.3:o:zyxel:atp100_firmware:*:*:*:*:*:*:*:*

showing 20 of 44

also known as (4)

Other names and identifiers for this entity.

sources

Which sources assert this record, and when.

cnnvd enisa_euvd fstec_bdu nvd NVD CVE.org MITRE

published 2022-07-19modified 2026-06-17

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references (8)

External citations — patches, advisories, analysis.

scry

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