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CVE-2021-45343

21
FAUCET Score

CVE-2021-45343 describes a NULL pointer dereference vulnerability in LibreCAD 2.2.0, specifically within the HATCH handling of the libdxfrw library, which can lead to application crashes when processing a specially crafted DXF document. This vulnerability has a CVSS score of 5.5 (Medium), indicating a local attack vector requiring user interaction, with the primary impact being a denial of service. There is currently no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
2.2.0CPE matchmatch criteria
cpe:2.3:a:librecad:librecad:2.2.0:*:*:*:*:*:*:*
34CPE matchmatch criteria
cpe:2.3:o:fedoraproject:fedora:34:*:*:*:*:*:*:*
35CPE matchmatch criteria
cpe:2.3:o:fedoraproject:fedora:35:*:*:*:*:*:*:*
10.0CPE matchmatch criteria
cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:*
11.0CPE matchmatch criteria
cpe:2.3:o:debian:debian_linux:11.0:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

5.5MEDIUM

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

Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
REQUIRED
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
HIGH
Exploitability Score
1.8
Impact Score
3.6
CvssVersion
3.1

Exploit Intelligence

EPSS Score
0.90%
Probability of exploitation in next 30 days
EPSS Percentile
56.0%
Percentile rank of EPSS score among Peer Group
As of 2026-07-26
Model: v2026.06.15
This CVE's current EPSS score of 0.0090 is in the 66th percentile among its peer group of 5,758 CVEs.

Social Chatter

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

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (1)

github_advisorypatch availablevia nvd_reference
View patch

References

github.com / LibreCAD/LibreCAD/issues/1468
ExploitIssue TrackingPatchThird 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