CVE-2018-1158
CVSS v3
6.5
MEDIUM
EPSS Score
2.5 %
exploit probability, as of 2026-10-05
CISA KEV
No
known exploited
Exploitation
—
SSVC status
Description
Mikrotik RouterOS before 6.42.7 and 6.40.9 is vulnerable to a stack exhaustion vulnerability. An authenticated remote attacker can crash the HTTP server via recursive parsing of JSON.
Technical details
- Published
- 2018-08-23
Frequently asked questions
What is CVE-2018-1158?
Mikrotik RouterOS before 6.42.7 and 6.40.9 is vulnerable to a stack exhaustion vulnerability. An authenticated remote attacker can crash the HTTP server via recursive parsing of JSON.
Is CVE-2018-1158 actively exploited?
Active exploitation of CVE-2018-1158 has not been confirmed. Its EPSS score was 2.5% on 2026-10-05, the estimated probability of exploitation in the next 30 days.
What is the CVSS score for CVE-2018-1158?
CVE-2018-1158 has a CVSS v3 base score of 6.5 (MEDIUM severity).
Is CVE-2018-1158 affecting your environment?
Use isMalicious to check if any of your IPs or domains are associated with this vulnerability's IOCs.
No credit card required · 50 free checks/month · Free API key
Other 2018 vulnerabilities worth triaging
Ranked by exploit probability (EPSS).