Used in attacks· fix by 2023-10-09Not scored yetUsed by ransomware gangs
Zyxel EMG2926 Routers
CVE-2017-6884
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.
What this means for your business
- It affects Zyxel EMG2926 Routers. It matters if your company, or a supplier that handles your data, runs it.
- Attackers are already using it. CISA added it to its list of flaws used in real attacks on 18 September 2023.
- Ransomware gangs are known to have used it.
- FIRST's prediction model gives it a 37% chance of attack attempts being seen in the next 30 days, ranking above 98% of all known flaws.
What to do
- 1Check whether your company or your suppliers run Zyxel EMG2926 Routers.
- 2If you do, follow CISA's required action below. No patch reference has been published yet.
- 3Treat it as urgent. US federal agencies must fix it by 9 October 2023. That deadline does not apply to private companies, but it shows how seriously CISA takes it.
- 4Because attackers have used it, check the affected systems for signs of a break-in, not only for the update.
Not sure if your company is exposed?
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Required action
Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.
CISA’s wording, unedited.
Scoring
- CVSS
- Not yet scored
Dates
- Published
- 2023-09-18
- Added to KEV
- 2023-09-18
- Remediation due
- 2023-10-09
- Sources
- CISA KEV