CVE-2023-22920

9.8 criticalEPSS 0.8%

Critical (9.8) in zyxel. EPSS 0.8% chance of exploitation in the next 30 days.

A security misconfiguration vulnerability exists in the Zyxel LTE3316-M604 firmware version V2.00(ABMP.6)C0 due to a factory default misconfiguration intended for testing purposes. A remote attacker could leverage this vulnerability to access an affected device using Telnet.

Severity

CVSS 3.1

9.8 critical

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

EPSS: 0.8% chance of exploitation in the next 30 days; higher than 57% of CVEs (scores of 2026-10-31)
CWE: CWE-284
Published: 2023-02-21
Modified: 2026-06-17
Record from: the NVD, synced 2026-10-19

Affected

zyxel:lte3202-m437_firmware
zyxel:lte3316-m604_firmware

References

https://www.zyxel.com/global/en/support/security-advisories/zyxel-security-advisory-for-security-misconfiguration-vulnerability-of-4g-lte-indoor-routers
https://www.zyxel.com/global/en/support/security-advisories/zyxel-security-advisory-for-security-misconfiguration-vulnerability-of-4g-lte-indoor-routers

Check your stack JSON