CVE-2017-16953 in the critical feed json
connoppp.cgi on ZTE ZXDSL 831CII devices does not require HTTP Basic Authentication, which allows remote attackers to modify the PPPoE conf…
published 2017-12-01 8 y ago modified 2026-06-17 4 mo ago also EUVD-2017-8122
- cvss
- 7.5
- version 3.0, NVD
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 11.3%
- EPSS 11.3% chance of exploitation in 30 days, percentile 95%
- public exploits
- 1
- Exploit-DB
Summary
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.
Timeline
- First public exploit (EDB-43188)
- Published
Exploit prediction
11.26% chance of exploitation in the next 30 days, higher than 95% of all scored CVEs (FIRST EPSS, 2026-11-08).
Exploits and checks
- EDB-43188 ZTE ZXDSL 831CII - Improper Access Restrictions webapps, 2017-11-27
- packetstormsecurity.com http://packetstormsecurity.com/files/145121/ZTE-ZXDSL-831-Unauthorized-Configuration-Access-Bypass.html referenced PoC, tagged "exploit" by a source, unverified
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| NVD | 3.0 | 7.5 | CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N |
| NVD | 2.0 | 5.0 | AV:N/AC:L/Au:N/C:N/I:P/A:N |
Classification
- Weakness
-
- CWE-287 Improper Authentication
References
-
exploit-db.com
/exploits/43188/
exploit, third-party-advisory, vdb-entry
-
packetstormsecurity.com
/files/145121/ZTE-ZXDSL-831-Unauthorized-Configuration-Access-Bypass.html
exploit, third-party-advisory, vdb-entry
- support.zte.com.cn /support/news/LoopholeInfoDetail.aspx?newsId=1008762
Sources
- CVE List CVE-2017-16953
- NVD CVE-2017-16953
Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.