Auth bypass in ZTE Zxdsl 831cii
CVE-2017-16953
connoppp.cgi on ZTE ZXDSL 831CII devices does not require HTTP Basic Authentication, which allows remote attackers to modify the PPPoE configuration or set up a malicious configuration via a GET request.
Vulnerability class: Broken Authentication
EPSS: 0.113 (95.5th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 7.5 (High). Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N.
Affected products
- Zte Zxdsl_831cii
- Zte Zxdsl_831cii_firmware
- N/a — versions n/a
Weakness classification (CWE)
References
- cve@mitre.org (VDB Entry, Third Party Advisory, exploit, x_refsource_EXPLOIT-DB)
- cve@mitre.org (Exploit, VDB Entry, Third Party Advisory, x_refsource_MISC)
- cve@mitre.org (x_refsource_CONFIRM)
Frequently asked questions
- What is CVE-2017-16953?
- CVE-2017-16953 is a high-severity vulnerability in ZTE Zxdsl 831cii, classified under Improper Authentication. CVSS score: 7.5/10. Published 2017-12-01.
- How severe is CVE-2017-16953?
- High severity. CVSS v3 base score is 7.5 out of 10.