Vulnerability in Zyxel Atp100
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, USG20(W)-VPN series firmware versions from 4.16 through 5.37 Patch 1, and USG FLEX H series firmware versions from 1.10 through 1.10 Patch 1 could allow an authenticated IPSec VPN user to cause DoS conditions against the “deviceid” daemon by sending a crafted hostname to an affected device if it has the “Device Insight” feature enabled.
Published · last modified .
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.
EPSS exploit prediction
EPSS: 0.006 (50.5th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 50th percentile — 50.5% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.006 · newest: 0.006 · change: 0.000
Affected products
- Zyxel Atp100
- Zyxel Atp100 Firmware — versions 5.37
- Zyxel Atp100w
- Zyxel Atp100w Firmware — versions 5.37
- Zyxel Atp200
- Zyxel Atp200 Firmware — versions 5.37
- Zyxel Atp500
- Zyxel Atp500 Firmware — versions 5.37
- Zyxel Atp700
- Zyxel Atp700 Firmware — versions 5.37
Weakness classification (CWE)
Public proof-of-concept exploits
References
- www.zyxel.com/global/en/support/security-advisories/zyxel-security-advisory-for… (vendor-advisory, Vendor Advisory)
Frequently asked questions
- What is CVE-2023-6399?
- CVE-2023-6399 is a medium-severity vulnerability in Zyxel Atp100, 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.