CVSS v3
9.8
CRITICAL
EPSS Score
1.8 %
exploit probability, as of 2026-09-25
CISA KEV
No
known exploited
Exploitation
—
SSVC status
Description
Fast C++ CSV Parser (aka fast-cpp-csv-parser) before 2018-07-06 has a heap-based buffer over-read in io::trim_chars in csv.h.
Technical details
- Published
- 2018-07-07
Frequently asked questions
What is CVE-2018-13421?
Fast C++ CSV Parser (aka fast-cpp-csv-parser) before 2018-07-06 has a heap-based buffer over-read in io::trim_chars in csv.h.
Is CVE-2018-13421 actively exploited?
Active exploitation of CVE-2018-13421 has not been confirmed. Its EPSS score was 1.8% on 2026-09-25, the estimated probability of exploitation in the next 30 days.
What is the CVSS score for CVE-2018-13421?
CVE-2018-13421 has a CVSS v3 base score of 9.8 (CRITICAL severity).
Is CVE-2018-13421 affecting your environment?
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