CVE-2017-6884
Actively exploited. CVE-2017-6884 is listed in the CISA Known Exploited Vulnerabilities catalog (added 2023-09-18) — exploitation has been observed in the wild, and US federal agencies are required to remediate it under BOD 22-01. Treat patching as urgent.
Public exploit code is available. Proof-of-concept or working exploit code for CVE-2017-6884 is indexed in Exploit-DB. Expect opportunistic scanning and exploitation attempts — prioritize remediation.
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.
CSIRTS triage
- What
- A command injection vulnerability in Zyxel EMG2926 routers allows execution of arbitrary commands.
- Who is affected
- Users of Zyxel EMG2926 routers are at risk of exploitation.
- Urgency
- Immediate remediation is necessary due to active exploitation and critical severity.
- Action
- Users should update their Zyxel EMG2926 routers to the latest firmware.
AI-assisted analysis generated from the source advisory — verify against the original.
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Exploitation outlook
- Exploitation confirmedAlready exploited in the wild (CISA KEV) — the prediction phase is over. Patch now. Riskier than 98% of all EPSS-scored CVEs.
Exploit availability
Public exploit or proof-of-concept code for CVE-2017-6884 is indexed in these free datasets. Available exploit code raises real-world risk independent of the CVSS score.
- Exploit-DBA public exploit is published in the Exploit-DB archive.look it up ↗
Advisory coverage (1)
- criticalexploitedCVE-2017-6884: Zyxel EMG2926 Routers Command Injection Vulnerabilitycisa-kev · 2023-09-18
External references
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