CVE-2018-11743
CVSS v3
9.8
CRITICAL
EPSS Score
2.2 %
exploit probability, as of 2026-09-25
CISA KEV
No
known exploited
Exploitation
—
SSVC status
Description
The init_copy function in kernel.c in mruby 1.4.1 makes initialize_copy calls for TT_ICLASS objects, which allows attackers to cause a denial of service (mrb_hash_keys uninitialized pointer and application crash) or possibly have unspecified other impact.
Technical details
- Published
- 2018-06-05
Frequently asked questions
What is CVE-2018-11743?
The init_copy function in kernel.c in mruby 1.4.1 makes initialize_copy calls for TT_ICLASS objects, which allows attackers to cause a denial of service (mrb_hash_keys uninitialized pointer and application crash) or possibly have unspecified other impact.
Is CVE-2018-11743 actively exploited?
Active exploitation of CVE-2018-11743 has not been confirmed. Its EPSS score was 2.2% on 2026-09-25, the estimated probability of exploitation in the next 30 days.
What is the CVSS score for CVE-2018-11743?
CVE-2018-11743 has a CVSS v3 base score of 9.8 (CRITICAL severity).
Is CVE-2018-11743 affecting your environment?
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