The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available.

  - A code execution vulnerability exists in the dxfRW::processLType() functionality of LibreCad libdxfrw     2.2.0-rc2-19-ge02f3580. A specially-crafted .dxf file can lead to a use-after-free vulnerability. An     attacker can provide a malicious file to trigger this vulnerability. (CVE-2021-21900)

Note that Nessus relies on the presence of the package as reported by the vendor.

The remote host is affected by the vulnerability described in GLSA-202305-26 (LibreCAD: Multiple Vulnerabilities)

  - A code execution vulnerability exists in the dwgCompressor::decompress18() functionality of LibreCad     libdxfrw 2.2.0-rc2-19-ge02f3580. A specially-crafted .dwg file can lead to an out-of-bounds write. An     attacker can provide a malicious file to trigger this vulnerability. (CVE-2021-21898)

  - A code execution vulnerability exists in the dwgCompressor::copyCompBytes21 functionality of LibreCad     libdxfrw 2.2.0-rc2-19-ge02f3580. A specially-crafted .dwg file can lead to a heap buffer overflow. An     attacker can provide a malicious file to trigger this vulnerability. (CVE-2021-21899)

  - A code execution vulnerability exists in the dxfRW::processLType() functionality of LibreCad libdxfrw     2.2.0-rc2-19-ge02f3580. A specially-crafted .dxf file can lead to a use-after-free vulnerability. An     attacker can provide a malicious file to trigger this vulnerability. (CVE-2021-21900)

  - A buffer overflow vulnerability in CDataMoji 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. (CVE-2021-45341)

  - 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. (CVE-2021-45342)

  - In LibreCAD 2.2.0, a NULL pointer dereference in the HATCH handling of libdxfrw allows an attacker to     crash the application using a crafted DXF document. (CVE-2021-45343)

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

The remote Debian 10 / 11 host has packages installed that are affected by multiple vulnerabilities as referenced in the dsa-5077 advisory.

    Multiple security issues were discovered in LibreCAD, an application for computer aided design (CAD) which     could result in denial of service or the execution of arbitrary code if a malformed CAD file is opened.
    For the oldstable distribution (buster), these problems have been fixed in version 2.1.3-1.2+deb10u1. For     the stable distribution (bullseye), these problems have been fixed in version 2.1.3-1.3+deb11u1. We     recommend that you upgrade your librecad packages. For the detailed security status of librecad please     refer to its security tracker page at: https://security-tracker.debian.org/tracker/librecad

Tenable has extracted the preceding description block directly from the Debian security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

The remote Debian 9 host has packages installed that are affected by multiple vulnerabilities as referenced in the dla-2838 advisory.

  - A code execution vulnerability exists in the dwgCompressor::decompress18() functionality of LibreCad     libdxfrw 2.2.0-rc2-19-ge02f3580. A specially-crafted .dwg file can lead to an out-of-bounds write. An     attacker can provide a malicious file to trigger this vulnerability. (CVE-2021-21898)

  - A code execution vulnerability exists in the dwgCompressor::copyCompBytes21 functionality of LibreCad     libdxfrw 2.2.0-rc2-19-ge02f3580. A specially-crafted .dwg file can lead to a heap buffer overflow. An     attacker can provide a malicious file to trigger this vulnerability. (CVE-2021-21899)

  - A code execution vulnerability exists in the dxfRW::processLType() functionality of LibreCad libdxfrw     2.2.0-rc2-19-ge02f3580. A specially-crafted .dxf file can lead to a use-after-free vulnerability. An     attacker can provide a malicious file to trigger this vulnerability. (CVE-2021-21900)

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.

The remote SUSE Linux SUSE15 host has packages installed that are affected by multiple vulnerabilities as referenced in the openSUSE-SU-2022:0067-1 advisory.

  - A code execution vulnerability exists in the dwgCompressor::decompress18() functionality of LibreCad     libdxfrw 2.2.0-rc2-19-ge02f3580. A specially-crafted .dwg file can lead to an out-of-bounds write. An     attacker can provide a malicious file to trigger this vulnerability. (CVE-2021-21898)

  - A code execution vulnerability exists in the dwgCompressor::copyCompBytes21 functionality of LibreCad     libdxfrw 2.2.0-rc2-19-ge02f3580. A specially-crafted .dwg file can lead to a heap buffer overflow. An     attacker can provide a malicious file to trigger this vulnerability. (CVE-2021-21899)

  - A code execution vulnerability exists in the dxfRW::processLType() functionality of LibreCad libdxfrw     2.2.0-rc2-19-ge02f3580. A specially-crafted .dxf file can lead to a use-after-free vulnerability. An     attacker can provide a malicious file to trigger this vulnerability. (CVE-2021-21900)

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.

The remote Ubuntu 16.04 ESM / 18.04 ESM / 20.04 LTS host has packages installed that are affected by multiple vulnerabilities as referenced in the USN-5957-1 advisory.

    Cody Sixteen discovered that LibreCAD incorrectly handled memory when parsing DXF files. An attacker could     use this issue to cause LibreCAD to crash, leading to a denial of service. This issue only affected Ubuntu     16.04 ESM and Ubuntu 18.04 ESM. (CVE-2018-19105)

    Lilith of Cisco Talos discovered that LibreCAD incorrectly handled memory when parsing DWG files. An     attacker could use this issue to cause LibreCAD to crash, leading to a denial of service, or possibly     execute arbitrary code. (CVE-2021-21898, CVE-2021-21899)

    Lilith of Cisco Talos discovered that LibreCAD incorrectly handled memory when parsing DRW files. An     attacker could use this issue to cause LibreCAD to crash, leading to a denial of service, or possibly     execute arbitrary code. (CVE-2021-21900)

    Albin Eldstl-Ahrens discovered that LibreCAD incorrectly handled memory when parsing JWW files. An     attacker could use this issue to cause LibreCAD to crash, leading to a denial of service, or possibly     execute arbitrary code. (CVE-2021-45341, CVE-2021-45342)

    Albin Eldstl-Ahrens discovered that LibreCAD incorrectly handled memory when parsing DXF files. An     attacker could use this issue to cause LibreCAD to crash, leading to a denial of service. (CVE-2021-45343)

Tenable has extracted the preceding description block directly from the Ubuntu security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

ID	Name	Product	Family	Published	Updated	Severity
258585	Linux Distros Unpatched Vulnerability : CVE-2021-21900	Nessus	Misc.	8/30/2025	8/30/2025	high
176194	GLSA-202305-26 : LibreCAD: Multiple Vulnerabilities	Nessus	Gentoo Local Security Checks	5/21/2023	5/21/2023	high
158089	Debian DSA-5077-1 : librecad - security update	Nessus	Debian Local Security Checks	2/16/2022	1/24/2025	high
155848	Debian DLA-2838-1 : librecad - LTS security update	Nessus	Debian Local Security Checks	12/3/2021	11/22/2023	high
158642	openSUSE 15 Security Update : libdxfrw, librecad (openSUSE-SU-2022:0067-1)	Nessus	SuSE Local Security Checks	3/5/2022	11/6/2023	high
172590	Ubuntu 16.04 ESM / 18.04 ESM / 20.04 LTS : LibreCAD vulnerabilities (USN-5957-1)	Nessus	Ubuntu Local Security Checks	3/15/2023	9/3/2025	high

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