Home / Vulnerabilities / CVE-2017-6884
HIGH SEVERITY Ransomware Linked
CVE-2017-6884 Zyxel · EMG2926 Routers

Zyxel EMG2926 Routers Command Injection Vulnerability

Critical Threat Advisory: This vulnerability is documented in active Ransomware campaigns. Immediate remediation required.

Technical Severity

CVSS v3.1 Metrics

HIGH
8.8 / 10
Minimal Risk Critical
Vector Specification
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Exploitation Likelihood

EPSS Prediction

91.06 %
Predictive Probability
Percentile Rank
99.6 th

Documented as more likely to be exploited than 99.6% of known CVEs.

Detection Date

Sep 18, 2023

Remediation Due

Oct 09, 2023

CISA Catalog Active

Threat Analysis

Zyxel EMG2926 routers contain a command injection vulnerability located in the diagnostic tools, specifically the nslookup function. A malicious user may exploit numerous vectors to execute malicious commands on the router, such as the ping_ip parameter to the expert/maintenance/diagnostic/nslookup URI.

Remediation Directive

Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.

External Intelligence

https://www.zyxel.com/global/en/support/security-advisories/zyxel-security-advisory-for-command-injection-vulnerability-in-emg2926-q10a-ethernet-cpe,

https://www.zyxel.com/global/en/support/security-advisories/zyxel-security-advisory-for-command-injection-vulnerability-in-emg2926-q10a-ethernet-cpe,
NVD

National Vulnerability Database

https://nvd.nist.gov/vuln/detail/CVE-2017-6884