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Vulnerability record · CVE-2021-45341 · published 25 January 2022

CVE-2021-45341: Librecad classic buffer overflow vulnerability

Librecad · Librecad

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.

8.8 CVSS 3.1 High EPSS 6.6% · top 6.4% CWE-120 · Classic buffer overflow
8.8CVSS 3.1 base score, v2 9.3
6.6%EPSS exploitation probability, 30 days
NoNot in CISA KEV
3Affected product versions listed by NVD
10References, 2 tagged exploit
17 Jun 2026Last modified by NVD

Description

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.

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

Affected products

3 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
https://github.com/LibreCAD/LibreCAD/issues/1462 ExploitIssue TrackingThird Party Advisory
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/FCC2FZ6HZOIK3775K4MTCOU
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/VUMH3CWGVSMR2UIZEA35Q5U
https://security.gentoo.org/glsa/202305-26
https://www.debian.org/security/2022/dsa-5077 Third Party Advisory
https://github.com/LibreCAD/LibreCAD/issues/1462 ExploitIssue TrackingThird Party Advisory
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/FCC2FZ6HZOIK3775K4MTCOU
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/VUMH3CWGVSMR2UIZEA35Q5U
https://security.gentoo.org/glsa/202305-26
https://www.debian.org/security/2022/dsa-5077 Third Party Advisory

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Source: NIST National Vulnerability Database (record CVE-2021-45341), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.