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…
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (0.76%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
Description
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.
- CVSS 3.1
- 8.8 HIGHCVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
- EPSS
- 0.76% probability · 53th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-78
- Affected
- zyxel/usg 2200-vpn firmware · zyxel/usg flex 100 firmware · zyxel/usg flex 100w firmware · zyxel/usg flex 200 firmware · zyxel/usg flex 50 firmware · zyxel/usg flex 500 firmware · zyxel/usg flex 50w firmware · zyxel/usg flex 700 firmware · zyxel/zywall vpn100 firmware · zyxel/zywall vpn2s firmware · zyxel/zywall vpn300 firmware · zyxel/zywall vpn50 firmware · zyxel/zywall vpn 100 firmware · zyxel/zywall vpn 300 firmware · zyxel/zywall vpn 50 firmware
- Source
- security@zyxel.com.tw
References
- https://www.zyxel.com/global/en/support/security-advisories/zyxel-security-advisory-for-multiple-vulnerabilities-in-firewalls-and-wlan-controllersVendor Advisory
- https://www.zyxel.com/global/en/support/security-advisories/zyxel-security-advisory-for-multiple-vulnerabilities-in-firewalls-and-wlan-controllersVendor Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.