CVE-2020-21843
CVSS v3
8.8
HIGH
EPSS Score
1.1 %
exploit probability, as of 2026-09-25
CISA KEV
No
known exploited
Exploitation
—
SSVC status
Description
A heap based buffer overflow vulnerability exits in GNU LibreDWG 0.10 via bit_read_RC ../../src/bits.c:318.
Technical details
- Published
- 2021-05-17
Frequently asked questions
What is CVE-2020-21843?
A heap based buffer overflow vulnerability exits in GNU LibreDWG 0.10 via bit_read_RC ../../src/bits.c:318.
Is CVE-2020-21843 actively exploited?
Active exploitation of CVE-2020-21843 has not been confirmed. Its EPSS score was 1.1% on 2026-09-25, the estimated probability of exploitation in the next 30 days.
What is the CVSS score for CVE-2020-21843?
CVE-2020-21843 has a CVSS v3 base score of 8.8 (HIGH severity).
Is CVE-2020-21843 affecting your environment?
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