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8.8

GNU LibreDWG 0.10 Heap Overflow Allows Malicious File Execution

CVE-2020-21833 · published 5 years ago
Summary

GNU LibreDWG, a library for reading DWG files, contains a vulnerability that could allow an attacker to execute malicious code if a specially crafted DWG file is opened. This could lead to unauthorized access or system compromise. Users should update to the latest version of GNU LibreDWG to ensure they have the latest security patches.

What to do

The CVE record does not list a fixed version. Check the vendor's site or the advisory links below - a fix may already be released.

Affected software
VendorProductAffected versions
gnu libredwg 0.10
cpe:2.3:a:gnu:libredwg:0.10:*:*:*:*:*:*:*
Original advisory text
A heap based buffer overflow vulnerability exits in GNU LibreDWG 0.10 via: read_2004_section_classes ../../src/decode.c:2440.
A heap based buffer overflow vulnerability exits in GNU LibreDWG 0.10 via: read_2004_section_classes ../../src/decode.c:2440.
References
Fix within
Internet-facing 14 days
Internal At next upgrade
  • Not known to be exploited
  • Needs hands-on effort to exploit (estimated)
  • Gives an attacker full control (estimated)
Severity
8.8 High
Exploitation
1% chance of attack within 30 days
Type
CWE-787Out-of-bounds Write
Timeline
Published17 May 2021
Updated4 Nov 2026
First seen5 Jul 2026
Sources
CVE-2020-21833 · NVD
CVE-2020-21833 · MITRE
CVE-2020-21833 · OSV
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