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CVE-2021-45342

27
FAUCET Score

CVE-2021-45342 is a buffer overflow vulnerability in the CDataList component of LibreCAD versions 2.2.0-rc3 and older. This flaw allows an unauthenticated attacker to achieve Remote Code Execution by tricking a user into opening a specially crafted JWW document. Rated with a CVSS score of 7.8 (High), this vulnerability requires user interaction (UI:R) and local access (AV:L) but can lead to high impact on confidentiality, integrity, and availability (C:H/I:H/A:H). The attack complexity is low (AC:L), making it relatively easy to exploit once the user interaction prerequisite is met. Currently, there is no evidence of active exploitation, and no public exploit code or Metasploit modules are available. Community discussion and media coverage for this CVE are minimal, indicating a low level of public awareness or attention.

Impacted Technologies

VendorProductVersion(s)CPE
<= 2.1.3CPE matchmatch criteria
cpe:2.3:a:librecad:librecad:*:*:*:*:*:*:*:*
2.2.0CPE matchmatch criteria
cpe:2.3:a:librecad:librecad:2.2.0:alpha:*:*:*:*:*:*
2.2.0CPE matchmatch criteria
cpe:2.3:a:librecad:librecad:2.2.0:rc1:*:*:*:*:*:*
2.2.0CPE matchmatch criteria
cpe:2.3:a:librecad:librecad:2.2.0:rc2:*:*:*:*:*:*
2.2.0CPE matchmatch criteria
cpe:2.3:a:librecad:librecad:2.2.0:rc3:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

7.8HIGH

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

Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
REQUIRED
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
Exploitability Score
1.8
Impact Score
5.9
CvssVersion
3.1

Exploit Intelligence

EPSS Score
1.93%
Probability of exploitation in next 30 days
EPSS Percentile
77.9%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0193 is in the 76th percentile among its peer group of 11,617 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.1 Bluesky, 0.0 Mastodon, and 0.2 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.3 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Remediation records are not available for this CVE.

References

github.com / LibreCAD/LibreCAD/issues/1464
ExploitIssue TrackingThird Party Advisory
lists.fedoraproject.org / archives/list/package-announce%40lists.fedoraproject.org/message/FCC2FZ6HZOIK3775K4MTCOUHX6PLGPEL
lists.fedoraproject.org / archives/list/package-announce%40lists.fedoraproject.org/message/VUMH3CWGVSMR2UIZEA35Q5UB7PDVVVYS
security.gentoo.org / glsa/202305-26
debian.org / security/2022/dsa-5077
Third Party Advisory