CVE-2018-14403
CVSS v3
9.8
CRITICAL
EPSS Score
2.6 %
exploit probability, as of 2026-09-25
CISA KEV
No
known exploited
Exploitation
—
SSVC status
Description
MP4NameFirstMatches in mp4util.cpp in MP4v2 2.0.0 mishandles substrings of atom names, leading to use of an inappropriate data type for associated atoms. The resulting type confusion can cause out-of-bounds memory access.
Technical details
- Published
- 2018-07-19
Frequently asked questions
What is CVE-2018-14403?
MP4NameFirstMatches in mp4util.cpp in MP4v2 2.0.0 mishandles substrings of atom names, leading to use of an inappropriate data type for associated atoms. The resulting type confusion can cause out-of-bounds memory access.
Is CVE-2018-14403 actively exploited?
Active exploitation of CVE-2018-14403 has not been confirmed. Its EPSS score was 2.6% on 2026-09-25, the estimated probability of exploitation in the next 30 days.
What is the CVSS score for CVE-2018-14403?
CVE-2018-14403 has a CVSS v3 base score of 9.8 (CRITICAL severity).
Is CVE-2018-14403 affecting your environment?
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