What is CVE-2023-28767?

CVE-2023-28767 is a high-severity vulnerability in Zyxel Atp Series Firmware, classified under OS Command Injection. CVSS score: 8.8/10. Published 2023-07-17.

How severe is CVE-2023-28767?

High severity. CVSS v3 base score is 8.8 out of 10.

RCE in Zyxel Atp Series Firmware

CVE-2023-28767

The configuration parser fails to sanitize user-controlled input in the Zyxel ATP series firmware versions 5.10 through 5.36, USG FLEX series firmware versions 5.00 through 5.36, USG FLEX 50(W) series firmware versions 5.10 through 5.36…

Vulnerability class: Command Injection (OS Command Injection)

EPSS: 0.001 (33.7th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 8.8 (High). Vector: CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

Affected products

Zyxel Atp Series Firmware — versions 5.10 through 5.36
Zyxel Usg20(w)-vpn Series Firmware — versions 5.10 through 5.36
Zyxel Usg Flex 50(w) Series Firmware — versions 5.10 through 5.36
Zyxel Usg Flex Series Firmware — versions 5.00 through 5.36
Zyxel Vpn Series Firmware — versions 5.00 through 5.36

Weakness classification (CWE)

CWE-78 — OS Command Injection

References

www.zyxel.com/global/en/support/security-advisories/zyxel-security-advisory-for… (vendor-advisory)

Frequently asked questions

What is CVE-2023-28767?: CVE-2023-28767 is a high-severity vulnerability in Zyxel Atp Series Firmware, classified under OS Command Injection. CVSS score: 8.8/10. Published 2023-07-17.
How severe is CVE-2023-28767?: High severity. CVSS v3 base score is 8.8 out of 10.