Vulnerability in Mikrotik Routeros
CVE-2019-3924
MikroTik RouterOS before 6.43.12 (stable) and 6.42.12 (long-term) is vulnerable to an intermediary vulnerability. The software will execute user defined network requests to both WAN and LAN clients. A remote unauthenticated attacker can use this vulnerability to bypass the router's firewall or for general network scanning activities.
EPSS: 0.157 (96.5th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N.
Affected products
- Mikrotik Routeros
- Tenable Mikrotik Routeros — versions RouterOS long-term 6.42.11 and below, RouterOS stable 6.43.11 and below
Weakness classification (CWE)
Public proof-of-concept exploits
References
- vulnreport@tenable.com (Exploit, VDB Entry, Third Party Advisory, exploit, x_refsource_EXPLOIT-DB)
- vulnreport@tenable.com (Exploit, Third Party Advisory, x_refsource_MISC)
- vulnreport@tenable.com (VDB Entry, Third Party Advisory, vdb-entry, x_refsource_BID)
Frequently asked questions
- What is CVE-2019-3924?
- CVE-2019-3924 is a high-severity vulnerability in Mikrotik Routeros, classified under Unintended Proxy or Intermediary (Confused Deputy). CVSS score: 7.5/10. Published 2019-02-20.
- How severe is CVE-2019-3924?
- High severity. CVSS v3 base score is 7.5 out of 10.
- Is CVE-2019-3924 known to be exploited?
- 2 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.