CVE-2021-23180
CVSS v3
7.8
HIGH
EPSS Score
1.4 %
exploit probability, as of 2026-09-25
CISA KEV
No
known exploited
Exploitation
—
SSVC status
Description
A flaw was found in htmldoc in v1.9.12 and before. Null pointer dereference in file_extension(),in file.c may lead to execute arbitrary code and denial of service.
Technical details
- Published
- 2022-03-02
Frequently asked questions
What is CVE-2021-23180?
A flaw was found in htmldoc in v1.9.12 and before. Null pointer dereference in file_extension(),in file.c may lead to execute arbitrary code and denial of service.
Is CVE-2021-23180 actively exploited?
Active exploitation of CVE-2021-23180 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-2021-23180?
CVE-2021-23180 has a CVSS v3 base score of 7.8 (HIGH severity).
Is CVE-2021-23180 affecting your environment?
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