UpHeron
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Servers and applications

CVE-2018-1157

Mikrotik RouterOS before 6.42.7 and 6.40.9 is vulnerable to a memory exhaustion vulnerability. An authenticated remote attacker can crash the HTTP server and in some circumstances reboot the system via a crafted HTTP POST request.

Severity
Medium 6.5
Published
23 Aug 2018
Last changed
17 Jun 2026
Added to UpHeron
1 Nov 2026
Fixed in
6.40.9, 6.42.7
Exploit chance
4.4% in the next 30 daysHigher than 91% of CVEs. EPSS by FIRST, 10 Nov 2026
Sources
NVD

Affected software

SoftwareAffected versions
MikroTik RouterOSServers and applications · cpe:o:mikrotik:routeros
  • Every version before 6.40.9
  • Every version before 6.42.7

References

  • NVD https://nvd.nist.gov/vuln/detail/CVE-2018-1157
  • CVE.org https://www.cve.org/CVERecord?id=CVE-2018-1157