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
Published · last modified .
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.
EPSS exploit prediction
EPSS: 0.113 (95.8th percentile), scored .
Moderate probability of exploitation in the next 30 days — watch for active exploitation reports. 96th percentile — 95.8% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.113 · newest: 0.113 · change: 0.000
Affected products
Weakness classification (CWE)
References
- www.exploit-db.com/exploits/43188/ (VDB Entry, Third Party Advisory, exploit)
- packetstormsecurity.com/files/145121/ZTE-ZXDSL-831-Unauthorized-Configuration-A… (Exploit, VDB Entry, Third Party Advisory)
- support.zte.com.cn/support/news/LoopholeInfoDetail.aspx
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.