CVE-2022-30526

Home/CVE/A privilege escalation vulnerability was identified in the CLI command of Zyxel USG FLEX 100(W) firmware versions 4.50 t

CVE

A privilege escalation vulnerability was identified in the CLI command of Zyxel USG FLEX 100(W) firmware versions 4.50 t

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.

HIGH · CVSS 7.8 EPSS 0.02516

Act now

Public exploit or PoC is available
CVSS base score ≥ 7.0

Sigma rules0 YARA rules0

⬡

Weakness Classification

CWE-269Improper Privilege Management

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Affected Products & Versions

zyxel usg flex 100w firmware>= 4.50 and <= 5.30
zyxel usg flex 200 firmware>= 4.50 and <= 5.30
zyxel usg flex 500 firmware>= 4.50 and <= 5.30
zyxel usg flex 700 firmware>= 4.50 and <= 5.30
zyxel usg flex 50w firmware>= 4.16 and <= 5.30
zyxel usg20w-vpn firmware>= 4.16 and <= 5.30
zyxel atp800 firmware>= 4.32 and <= 5.30
zyxel atp700 firmware>= 4.32 and <= 5.30
Show all 25 affected productszyxel atp500 firmware>= 4.32 and <= 5.30
zyxel atp200 firmware>= 4.32 and <= 5.30
zyxel atp100w firmware>= 4.32 and <= 5.30
zyxel atp100 firmware>= 4.32 and <= 5.30
zyxel vpn1000 firmware>= 4.30 and <= 5.30
zyxel vpn300 firmware>= 4.30 and <= 5.30
zyxel vpn100 firmware>= 4.30 and <= 5.30
zyxel vpn50 firmware>= 4.30 and <= 5.30
zyxel usg20-vpn firmware>= 4.30 and <= 5.30
zyxel usg 2200-vpn firmware>= 4.30 and <= 5.30
zyxel zywall 110 firmware>= 4.30 and <= 5.30
zyxel zywall 310 firmware>= 4.30 and <= 5.30
zyxel zywall 1100 firmware>= 4.30 and <= 5.30
zyxel usg40 firmware>= 4.09 and <= 4.72
zyxel usg40w firmware>= 4.09 and <= 4.72
zyxel usg60 firmware>= 4.09 and <= 4.72
zyxel usg60w firmware>= 4.09 and <= 4.72

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Public Exploits & PoCs

pocpacketstormsecurity.com · Zyxel-Firewall-SUID-Binary-Privilege-Escalation.htmlpacketstormsecurity.com

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Scoring & Timeline

7.8

HIGH · CVSS v3.1 · security@zyxel.com.tw

View on NVD

Attack Vector

Network Adjacent Local Physical

Attack Complexity

Low High

Privileges Required

None Low High

User Interaction

None Required

Scope

Unchanged Changed

Confidentiality

None Low High

Integrity

None Low High

Availability

None Low High

Published to NVD19 Jul 2022 · 06:15 AM

CVSS VectorCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

🔗

References & Sources

Source URLs (vendor pages, mailing lists, write-ups). Exploit/PoC links are in their own section above to avoid duplication.

https://www.zyxel.com/support/Zyxel-security-advisory-authenticated-directory-traversal-vulnerabilities-of-firewalls.shtmlVendor Advisory

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