CVE-2023-34139

A command injection vulnerability in the Free Time WiFi hotspot feature of the Zyxel USG FLEX series firmware versions 4.50 through 5.36 Patch 2 and VPN series firmware versions 4.20 through 5.36 Patch 2,could allow an unauthenticated, LAN-based attacker to execute some OS commands on an affected device.
OS Command Injection
ProviderTypeBase ScoreAtk. VectorAtk. ComplexityPriv. RequiredVector
NISTNIST
8.8 HIGH
ADJACENT_NETWORK
LOW
NONE
CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
ZyxelCNA
8.8 HIGH
ADJACENT_NETWORK
LOW
NONE
CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CVEADP
---
---
CISA-ADPADP
---
---
Base Score
CVSS 3.x
EPSS Score
Percentile: 44%
VendorProductVersion
zyxelusg_2200-vpn_firmware
4.20 ≤
𝑥
< 5.37
zyxelusg_flex_100_firmware
4.50 ≤
𝑥
< 5.37
zyxelusg_flex_100w_firmware
4.50 ≤
𝑥
< 5.37
zyxelusg_flex_200_firmware
4.50 ≤
𝑥
< 5.37
zyxelusg_flex_50_firmware
4.50 ≤
𝑥
< 5.37
zyxelusg_flex_500_firmware
4.50 ≤
𝑥
< 5.37
zyxelusg_flex_50w_firmware
4.50 ≤
𝑥
< 5.37
zyxelusg_flex_700_firmware
4.50 ≤
𝑥
< 5.37
zyxelzywall_vpn100_firmware
4.20 ≤
𝑥
< 5.37
zyxelzywall_vpn2s_firmware
4.20 ≤
𝑥
< 5.37
zyxelzywall_vpn300_firmware
4.20 ≤
𝑥
< 5.37
zyxelzywall_vpn50_firmware
4.20 ≤
𝑥
< 5.37
zyxelzywall_vpn_100_firmware
4.20 ≤
𝑥
< 5.37
zyxelzywall_vpn_300_firmware
4.20 ≤
𝑥
< 5.37
zyxelzywall_vpn_50_firmware
4.20 ≤
𝑥
< 5.37
𝑥
= Vulnerable software versions
Common Weakness Enumeration
References
https://www.zyxel.com/global/en/support/security-advisories/zyxel-security-advisory-for-multiple-vulnerabilities-in-firewalls-and-wlan-controllers
https://www.zyxel.com/global/en/support/security-advisories/zyxel-security-advisory-for-multiple-vulnerabilities-in-firewalls-and-wlan-controllers