CVE-2020-26148
CVSS v3
7.5
HIGH
EPSS Score
1.4 %
exploit probability, as of 2026-09-25
CISA KEV
No
known exploited
Exploitation
—
SSVC status
Description
md_push_block_bytes in md4c.c in md4c 0.4.5 allows attackers to trigger use of uninitialized memory, and cause a denial of service (e.g., assertion failure) via a malformed Markdown document.
Technical details
- Published
- 2020-09-30
Frequently asked questions
What is CVE-2020-26148?
md_push_block_bytes in md4c.c in md4c 0.4.5 allows attackers to trigger use of uninitialized memory, and cause a denial of service (e.g., assertion failure) via a malformed Markdown document.
Is CVE-2020-26148 actively exploited?
Active exploitation of CVE-2020-26148 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-2020-26148?
CVE-2020-26148 has a CVSS v3 base score of 7.5 (HIGH severity).
Is CVE-2020-26148 affecting your environment?
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