CVE-2023-33012

Home/CVE/A command injection vulnerability in the configuration parser of the Zyxel ATP series firmware versions 5.10 through 5.3

CVE

A command injection vulnerability in the configuration parser of the Zyxel ATP series firmware versions 5.10 through 5.3

A command injection vulnerability in the configuration parser of the Zyxel ATP series firmware versions 5.10 through 5.36 Patch 2, USG FLEX series firmware versions 5.00 through 5.36 Patch 2, USG FLEX 50(W) series firmware versions 5.10 through 5.36 Patch 2, USG20(W)-VPN series firmware versions 5.10 through 5.36 Patch 2, and VPN series firmware versions 5.00 through 5.36 Patch 2, could allow an unauthenticated, LAN-based attacker to execute some OS commands by using a crafted GRE configuration when the cloud management mode is enabled.

HIGH · CVSS 8.8 EPSS 0.08567

Schedule remediation

EPSS percentile: top 7% of all CVEs by exploitation likelihood
CVSS base score ≥ 7.0

Sigma rules0 YARA rules0

⬡

Weakness Classification

CWE-78Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')

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Affected Products & Versions

zyxel usg 20w-vpn firmware>= 5.10 and < 5.37
zyxel usg 2200-vpn firmware>= 5.00 and < 5.37
zyxel usg flex 100 firmware>= 5.00 and < 5.37
zyxel usg flex 100w firmware>= 5.00 and < 5.37
zyxel usg flex 200 firmware>= 5.00 and < 5.37
zyxel usg flex 50 firmware>= 5.00 and < 5.37
zyxel usg flex 500 firmware>= 5.00 and < 5.37
zyxel usg flex 50w firmware>= 5.00 and < 5.37
Show all 22 affected productszyxel usg flex 700 firmware>= 5.00 and < 5.37
zyxel zywall atp100 firmware>= 5.10 and < 5.37
zyxel zywall atp100w firmware>= 5.10 and < 5.37
zyxel zywall atp200 firmware>= 5.10 and < 5.37
zyxel zywall atp500 firmware>= 5.10 and < 5.37
zyxel zywall atp700 firmware>= 5.10 and < 5.37
zyxel zywall atp800 firmware>= 5.10 and < 5.37
zyxel zywall vpn100 firmware>= 5.00 and < 5.37
zyxel zywall vpn2s firmware>= 5.00 and < 5.37
zyxel zywall vpn300 firmware>= 5.00 and < 5.37
zyxel zywall vpn50 firmware>= 5.00 and < 5.37
zyxel zywall vpn 100 firmware>= 5.00 and < 5.37
zyxel zywall vpn 300 firmware>= 5.00 and < 5.37
zyxel zywall vpn 50 firmware>= 5.00 and < 5.37

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Scoring & Timeline

8.8

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 NVD17 Jul 2023 · 06:15 PM

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

SSVC triage · cisa-vulnrichment

Exploitation

none

Automatable

Technical impact

total

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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/global/en/support/security-advisories/zyxel-security-advisory-for-multiple-vulnerabilities-in-firewalls-and-wlan-controllersVendor Advisory

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