CVE-2025-6599
HIGH WAF: Medium
CVSS 7.5
Published: 2025-11-18
CWE-400
An uncontrolled resource consumption vulnerability in the web server of Zyxel DX3301-T0 firmware version 5.50(ABVY.6.3)C0 and earlier could allow an attacker to perform Slowloris‑style denial‑of‑service (DoS) attacks. Such attacks may temporarily block legitimate HTTP requests and partially disrupt access to the web management interface, while other networking services remain unaffected.
WAF Coverage Analysis
Uncontrolled Resource Consumption
Medium WAF Coverage
OWASP: A05:2021 Security Misconfiguration
912xxx - DOS Protection
Affected Software
| Vendor | Product | Version |
|---|---|---|
| zyxel | lte3301-plus_firmware | up to 1.00\(abqu.7\)c0 |
| zyxel | nr5103_firmware | up to 4.19\(abyc.8\)c0 |
| zyxel | nr5103e_firmware | up to 1.00\(acdj.1\)c0 |
| zyxel | nr5309_firmware | up to 1.00\(ackp.1\)b3 |
| zyxel | nr7302_firmware | up to 5.00\(acha.5\)c0 |
| zyxel | nr7303_firmware | up to 1.00\(acei.1\)c0 |
| zyxel | nebula_fwa505_firmware | up to 1.19\(acko.0\)c0 |
| zyxel | nebula_fwa510_firmware | up to 1.20\(acgd.1\)c0 |
| zyxel | nebula_fwa515_firmware | up to 1.50\(acpz.0\)c0 |
| zyxel | nebula_fwa710_firmware | up to 1.20\(acgc.0\)c0 |
References
- www.zyxel.com (Vendor Advisory)