Vulnerability in Zyxel Atp Series Firmware
CVE-2023-6399
A format string vulnerability 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, U…
EPSS: 0.003 (54.1th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 5.7 (Medium). Vector: CVSS:3.1/AV:A/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H.
Affected products
- Zyxel Atp Series Firmware — versions version 4.32 through 5.37 Patch 1
- Zyxel Usg20(w)-vpn Series Firmware — versions version 4.16 through 5.37 Patch 1
- Zyxel Usg Flex 50(w) Series Firmware — versions version 4.16 through 5.37 Patch 1
- Zyxel Usg Flex H Series Firmware — versions version 1.10 through 1.10 Patch 1
- Zyxel Usg Flex Series Firmware — versions version 4.50 through 5.37 Patch 1
Weakness classification (CWE)
Public proof-of-concept exploits
References
Frequently asked questions
- What is CVE-2023-6399?
- CVE-2023-6399 is a medium-severity vulnerability in Zyxel Atp Series Firmware, classified under Use of Externally-Controlled Format String. CVSS score: 5.7/10. Published 2024-02-20.
- How severe is CVE-2023-6399?
- Medium severity. CVSS v3 base score is 5.7 out of 10.
- Is CVE-2023-6399 known to be exploited?
- 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.