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CVE-2021-45341

32
FAUCET Score

CVE-2021-45341 is a high-severity buffer overflow vulnerability in the jwwlib component of LibreCAD 2.2.0-rc3 and older, specifically within the CDataMoji function, affecting various Debian and Fedora LibreCAD distributions. An unauthenticated attacker can achieve Remote Code Execution by tricking a user into opening a specially crafted JWW document. While the CVSS score is 8.8 (HIGH), indicating a critical impact with high confidentiality, integrity, and availability compromise, there is currently no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage.

Impacted Technologies

VendorProductVersion(s)CPE
< 2.2.0CPE matchmatch criteria
cpe:2.3:a:librecad:librecad:*:*:*:*:*:*:*:*
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:*:*:*:*:*:*
34CPE matchmatch criteria
cpe:2.3:o:fedoraproject:fedora:34:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

8.8HIGH

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

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
REQUIRED
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
Exploitability Score
2.8
Impact Score
5.9
CvssVersion
3.1

Exploit Intelligence

EPSS Score
6.62%
Probability of exploitation in next 30 days
EPSS Percentile
93.1%
Percentile rank of EPSS score among Peer Group
As of 2026-07-26
Model: v2026.06.15
This CVE's current EPSS score of 0.0662 is in the 93rd percentile among its peer group of 14,848 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.2 Bluesky, 0.1 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 0.1 Security Researcher mentions.

Remediation

Patch Available

Remediation records are not available for this CVE.

References

github.com / LibreCAD/LibreCAD/issues/1462
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