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TI-2019-02930 Aliases CVE-2019-3924GHSA-4qcw-5w3m-2hfg

MikroTik RouterOS before 6.43.12 (stable) and 6.42.12 (long-term) is vulnerable to an…

Priority MEDIUM 49CWE-441Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
None
Attack complexity
Low
Impact type
—
Confidentiality · integrity · availability
High · None · None
Fix status
No fix listed

Attack profile from CVSS 3.1 · NVD. Fix status from CNA.

Summary

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.

Why it matters now

EPSS 0.15697 96th percentileScored 2026-11-07
Public exploit Yes 2 exploit referencesTagged by the CNA and NVD
Fix No fix listed No fixed version in the sources yet

SSVC decision points

Not available: CISA has not published SSVC decision points for this record.

Affected products

VendorProductAffected versionsFixed inStatusSource
TenableMikroTik RouterOSRouterOS long-term 6.42.11 and below, RouterOS stable 6.43.11 and below—No fix listedCNA
  • MikroTik RouterOS VendorTenable Affected RouterOS long-term 6.42.11 and below, RouterOS stable 6.43.11 and below Fixed in — No fix listed CNA

CPE configurations NVD · 2

CPEVersionsRoleVendor
cpe:2.3:o:mikrotik:routeros:*:*:*:*:ltr:*:*:*before 6.42.12VulnerableMikroTik
cpe:2.3:o:mikrotik:routeros:*:*:*:*:-:*:*:*before 6.43.12VulnerableMikroTik
  • cpe:2.3:o:mikrotik:routeros:*:*:*:*:ltr:*:*:* Versions before 6.42.12 Vulnerable ·MikroTik
  • cpe:2.3:o:mikrotik:routeros:*:*:*:*:-:*:*:* Versions before 6.43.12 Vulnerable ·MikroTik

Remediation

No fixed version listed by the sources yet.

Timeline

  1. 2026-10-02 Threatist record created from CVE-2019-3924
  2. 2026-10-03 Alias added: GHSA-4qcw-5w3m-2hfg

References

Exploit 2

  • TI-2019-08259 Underflow in PHP-FPM can lead to RCE KEVCVSS 3.1CRITICAL 9.8
  • TI-2021-17490 mod_proxy SSRF KEVCVSS 3.1CRITICAL 9.0
  • TI-2021-02645 SM2 Decryption Buffer Overflow CVSS 3.1CRITICAL 9.8
  • TI-2020-08897 Potential XSS vulnerability in jQuery KEVCVSS 3.1MEDIUM 6.9
  • TI-2021-20274 Possible buffer overflow when parsing multipart content in mod_lua of Apache HTTP Server 2.4.51 and earlier CVSS 3.1CRITICAL 9.8
  • TI-2022-00687 Infinite loop in BN_mod_sqrt() reachable when parsing certificates CVSS 3.1HIGH 7.5
See all 217 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences