CVE-2023-6398

high-risk
Published 2024-02-20

A post-authentication command injection vulnerability in the file upload binary in Zyxel ATP series firmware versions from 4.32 through 5.37 Patch 1, USG FLEX series firmware versions from 4.50 through 5.37 Patch 1, USG FLEX 50(W) series firmware versions from 4.16 through 5.37 Patch 1, USG20(W)-VPN series firmware versions from 4.16 through 5.37 Patch 1, USG FLEX H series firmware versions from 1.10 through 1.10 Patch 1, NWA50AX firmware versions through 6.29(ABYW.3), WAC500 firmware versions through 6.65(ABVS.1), WAX300H firmware versions through 6.60(ACHF.1), and WBE660S firmware versions through 6.65(ACGG.1) could allow an authenticated attacker with administrator privileges to execute some operating system (OS) commands on an affected device via FTP.

Do I need to act?

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0.73% chance of exploitation
EPSS score — low exploit probability
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Not on CISA KEV list
No confirmed active exploitation reported to CISA
?
Patch status unknown
Check vendor advisories for fix availability and mitigation guidance
7
CVSS 7.2/10 High
NETWORK / LOW complexity

Affected Products (20)

Affected Vendors

Zyxel

References (2)

Vendor Advisory https://www.zyxel.com/global/en/support/security-advisories/zyxel-security-advis...
Vendor Advisory https://www.zyxel.com/global/en/support/security-advisories/zyxel-security-advis...
57
/ 100
high-risk
Severity 26/34 · High
Exploitability 2/34 · Minimal
Exposure 29/34 · Critical