What is CVE-2023-27990?

CVE-2023-27990 is a medium-severity vulnerability in Zyxel Atp Series Firmware, classified under Cross-site Scripting. CVSS score: 4.8/10. Published 2023-04-24.

How severe is CVE-2023-27990?

Medium severity. CVSS v3 base score is 4.8 out of 10.

XSS in Zyxel Atp Series Firmware

CVE-2023-27990

The cross-site scripting (XSS) vulnerability in Zyxel ATP series firmware versions 4.32 through 5.35, USG FLEX series firmware versions 4.50 through 5.35, USG FLEX 50(W) firmware versions 4.16 through 5.35, USG20(W)-VPN firmware versions 4…

Vulnerability class: XSS (Cross-Site Scripting)

EPSS: 0.004 (59.1th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 4.8 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:L/A:N.

Affected products

Zyxel Atp Series Firmware — versions 4.32 through 5.35
Zyxel Usg20(w)-vpn Firmware — versions 4.16 through 5.35
Zyxel Usg Flex 50(w) Firmware — versions 4.16 through 5.35
Zyxel Usg Flex Series Firmware — versions 4.50 through 5.35
Zyxel Vpn Series Firmware — versions 4.30 through 5.35

Weakness classification (CWE)

CWE-79 — Cross-site Scripting

References

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

Frequently asked questions

What is CVE-2023-27990?: CVE-2023-27990 is a medium-severity vulnerability in Zyxel Atp Series Firmware, classified under Cross-site Scripting. CVSS score: 4.8/10. Published 2023-04-24.
How severe is CVE-2023-27990?: Medium severity. CVSS v3 base score is 4.8 out of 10.