What’s Vulnerable › Vulnerabilities

CVE-2020-21836

• Severity: high (CVSS 8.8 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 1.1% probability of exploitation in the next 30 days
• Public exploit or detection template: yes
• Published: 2021-05-17 · updated 2026-07-09
• Weakness: CWE-787

Description

A heap based buffer overflow vulnerability exists in GNU LibreDWG 0.10 via read_2004_section_preview ../../src/decode.c:3175.

Affected products

• GNU LibreDWG: 0.10

References

• https://github.com/LibreDWG/libredwg/issues/188#issuecomment-574493437
• https://github.com/LibreDWG/libredwg/issues/188#issuecomment-574493437

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