CVE-2021-45342 Memory corruption in n/a

What is CVE-2021-45342?

CVE-2021-45342 is a high-severity memory corruption vulnerability in Debian Debian Linux, published on 25 Jan 2022. It can only be exploited from the same machine or local network, and only if a user opens a file or follows a link.

Official description

A buffer overflow vulnerability in CDataList of the jwwlib component of LibreCAD 2.2.0-rc3 and older allows an attacker to achieve Remote Code Execution using a crafted JWW document.

Weakness: CWE-120

Which versions are affected by CVE-2021-45342?

It affects 3 products.

Products include Debian Debian Linux, Fedoraproject Fedora, Librecad Librecad.

How do I fix CVE-2021-45342?

Upgrade to a fixed version.

Upgrade to the fixed version. Memory-safe languages, compiler hardening and fuzzing prevent most new cases. More about Memory corruption.

Is CVE-2021-45342 being exploited?

There is no known exploitation of CVE-2021-45342 in the wild and no public exploit code.

Other vulnerabilities in Debian Debian Linux

• CVE-2015-3306 ProFTPD Improper Access Control Exploited Critical 10.0
• CVE-2025-49113 RoundCube Webmail Deserialization of Untrusted Data Exploited Critical 9.9
• CVE-2026-24061 GNU InetUtils Argument Injection Exploited Critical 9.8
• CVE-2025-39682 Linux Kernel Improper Check for Unusual or Exceptional Conditions Exploited Critical 9.8
• CVE-2024-9680 Mozilla Firefox Use-After-Free Exploited Critical 9.8

All Debian Debian Linux vulnerabilities

Sources

• CVE record
• NVD
• OSV
• GitHub advisory
• How this page is made

Also known as DEBIAN-CVE-2021-45342, GHSA-jvxq-fmg4-p4w2, UBUNTU-CVE-2021-45342.