CVE-2019-16366
CVSS v3
9.8
CRITICAL
EPSS Score
1.4 %
exploit probability, as of 2026-09-25
CISA KEV
No
known exploited
Exploitation
—
SSVC status
Description
In XS 9.0.0 in Moddable SDK OS180329, there is a heap-based buffer overflow in fxBeginHost in xsAPI.c when called from fxRunDefine in xsRun.c, as demonstrated by crafted JavaScript code to xst.
Technical details
- Published
- 2019-09-16
Frequently asked questions
What is CVE-2019-16366?
In XS 9.0.0 in Moddable SDK OS180329, there is a heap-based buffer overflow in fxBeginHost in xsAPI.c when called from fxRunDefine in xsRun.c, as demonstrated by crafted JavaScript code to xst.
Is CVE-2019-16366 actively exploited?
Active exploitation of CVE-2019-16366 has not been confirmed. Its EPSS score was 1.4% on 2026-09-25, the estimated probability of exploitation in the next 30 days.
What is the CVSS score for CVE-2019-16366?
CVE-2019-16366 has a CVSS v3 base score of 9.8 (CRITICAL severity).
Is CVE-2019-16366 affecting your environment?
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