Buffer overflow in Zyxel Atp100
CVE-2023-37926
A buffer overflow vulnerability in the Zyxel ATP series firmware versions 4.32 through 5.37, USG FLEX series firmware versions 4.50 through 5.37, USG FLEX 50(W) series firmware versions 4.16 through 5.37, USG20(W)-VPN series firmware versions 4.16 through 5.37, and VPN series firmware versions 4.30 through 5.37, could allow an authenticated local attacker to cause denial-of-service (DoS) conditions by executing the CLI command to dump system logs on an affected device.
Vulnerability class: Buffer Overflow
Published · last modified .
CVSS v3 metric
CVSS v3 base score 5.5 (Medium). Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H.
EPSS exploit prediction
EPSS: 0.002 (11.4th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 11th percentile — 11.4% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.002 · newest: 0.002 · change: 0.000
Affected products
- Zyxel Atp100
- Zyxel Atp100w
- Zyxel Atp200
- Zyxel Atp500
- Zyxel Atp700
- Zyxel Atp800
- Zyxel Atp Series Firmware — versions versions 4.32 through 5.37
- Zyxel Usg 20w-Vpn
- Zyxel Usg20(w)-Vpn Series Firmware — versions versions 4.16 through 5.37
- Zyxel Usg Flex 100
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-2023-37926?
- CVE-2023-37926 is a medium-severity vulnerability in Zyxel Atp100, classified under Buffer Copy without Checking Size of Input (Classic Buffer Overflow). CVSS score: 5.5/10. Published 2023-11-28.
- How severe is CVE-2023-37926?
- Medium severity. CVSS v3 base score is 5.5 out of 10.