Known exploited vulnerability
CVE-2017-6884
The short answer
CVE-2017-6884 affects n/a n/a and is rated high (CVSS 8.8). CISA added it to the Known Exploited Vulnerabilities catalog on 2023-09-18: attackers are using it, so patch it first.
What it is
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.
Weakness: CWE-78.
Severity
8.8 high
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Exploited (CISA KEV)
Yes, since Sep 18, 2023
Federal due date Oct 9, 2023
EPSS, next 30 days
33%
Higher than 98% of scored CVEs
How it can be exploited
- Attack vector
- Network
- Attack complexity
- Low
- Privileges required
- Low
- User interaction
- None
- Scope
- Unchanged
- Confidentiality impact
- High
- Integrity impact
- High
- Availability impact
- High
What CISA says to do
Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.
Affected products
n/a. NVD's record lists the exact affected versions.
References
- www.exploit-db.com/exploits/41782/ ExploitThird Party AdvisoryVDB Entry
- www.exploit-db.com/exploits/41782/ ExploitThird Party AdvisoryVDB Entry
- www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2017-6884 US Government Resource
Questions
Is CVE-2017-6884 being exploited?
Yes. CISA added CVE-2017-6884 to its Known Exploited Vulnerabilities catalog on 2023-09-18, with a federal remediation due date of 2023-10-09. CISA lists it as used in ransomware campaigns.
How do I fix CVE-2017-6884?
CISA's required action: Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.
From NVD, CISA KEV, FIRST EPSS and OSV.dev, checked . Status on NVD: Analyzed. The description is NVD's text, quoted as published.
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