Actively exploited · Published Apr 6, 2017 · Assigned by mitre
CVE-2017-6884
High 8.8 Exploited Ransomware
In plain English
A high-severity OS command injection in EMG2926 Routers from Zyxel. Attackers are actively exploiting it in the wild (listed by CISA on September 18, 2023). It has been used in ransomware campaigns. The chance it is exploited in the next 30 days is estimated at 33.0% (higher than 98% of all known vulnerabilities). Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.
CISA guidance
Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.
Federal agencies must remediate by Oct 9, 2023.
Official description
A command injection vulnerability was discovered on the Zyxel EMG2926 home router with firmware V1.00(AAQT.4)b8. The vulnerability is located in the diagnostic tools, specifically the nslookup function. A malicious user may exploit numerous vectors to execute arbitrary commands on the router, such as the ping_ip parameter to the expert/maintenance/diagnostic/nslookup URI.
Affected products (as reported)
Weakness: CWE-78 · Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
References
- 41782 exploit, x_refsource_EXPLOIT-DB
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2017-6884 government-resource