What’s Vulnerable › Vulnerabilities

CVE-2017-16953

• Severity: high (CVSS 7.5 v3.0)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 11.3% probability of exploitation in the next 30 days
• Public exploit or detection template: yes
• Published: 2017-12-01 · updated 2026-06-17
• Weakness: CWE-287

Description

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.

Affected products

• ZTE Zxdsl 831Cii Firmware: all versions

References

• http://packetstormsecurity.com/files/145121/ZTE-ZXDSL-831-Unauthorized-Configuration-Access-Bypass.html
• http://support.zte.com.cn/support/news/LoopholeInfoDetail.aspx?newsId=1008762
• https://www.exploit-db.com/exploits/43188/
• http://packetstormsecurity.com/files/145121/ZTE-ZXDSL-831-Unauthorized-Configuration-Access-Bypass.html
• http://support.zte.com.cn/support/news/LoopholeInfoDetail.aspx?newsId=1008762
• https://www.exploit-db.com/exploits/43188/

Get alerted when CVE-2017-16953 or the next vulnerability affects your stack