RCE in Zyxel Atp Series Firmware
CVE-2023-34138
A command injection vulnerability in the hotspot management feature of the Zyxel ATP series firmware versions 4.60 through 5.36 Patch 2, USG FLEX series firmware versions 4.60 through 5.36 Patch 2, USG FLEX 50(W) series firmware versions 4.60 through 5.36 Patch 2, USG20(W)-VPN series firmware versions 4.60 through 5.36 Patch 2, and VPN series firmware versions 4.60 through 5.36 Patch 2, could allow an unauthenticated, LAN-based attacker to execute some OS commands on an affected device if the attacker could trick an authorized administrator to add their IP address to the list of trusted RADIUS clients in advance.
Vulnerability class: Command Injection (OS Command Injection)
Published · last modified .
CVSS v3 metric
CVSS v3 base score 8.0 (High). Vector: CVSS:3.1/AV:A/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.007 (52.0th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 52nd percentile — 52.0% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.007 · newest: 0.007 · change: 0.000
Affected products
- Zyxel Atp Series Firmware — versions 4.60 through 5.36 Patch 2
- Zyxel Usg 20w-Vpn
- Zyxel Usg 20w-Vpn Firmware
- Zyxel Usg20(w)-Vpn Series Firmware — versions 4.60 through 5.36 Patch 2
- Zyxel Usg 2200-Vpn
- Zyxel Usg 2200-Vpn Firmware
- Zyxel Usg Flex 100
- Zyxel Usg Flex 100 Firmware
- Zyxel Usg Flex 100w
- Zyxel Usg Flex 100w Firmware
Weakness classification (CWE)
References
- www.zyxel.com/global/en/support/security-advisories/zyxel-security-advisory-for… (vendor-advisory, Vendor Advisory)
Frequently asked questions
- What is CVE-2023-34138?
- CVE-2023-34138 is a high-severity vulnerability in Zyxel Atp Series Firmware, classified under OS Command Injection. CVSS score: 8.0/10. Published 2023-07-17.
- How severe is CVE-2023-34138?
- High severity. CVSS v3 base score is 8.0 out of 10.