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CVE-2021-21897

A code execution vulnerability exists in the DL_Dxf::handleLWPolylineData functionality of...

8.8 HighFix available

A code execution vulnerability exists in the DL_Dxf::handleLWPolylineData functionality of Ribbonsoft dxflib 3.17.0. A specially-crafted .dxf file can lead to a heap buffer overflow. An attacker can provide a malicious file to trigger this vulnerability.

Attack profile

How easy it is to exploit

Attack vector
Network
Complexity
Low
Privileges needed
None
User interaction
Required

What an attacker can affect

Confidentiality
High
Integrity
High
Availability
High

Exploit likelihood

2.89%Up 2.2 points since Sep 9, 2021
90%50%10%1%

What each source reports

CVE List Score used 8.8

A code execution vulnerability exists in the DL_Dxf::handleLWPolylineData functionality of Ribbonsoft dxflib 3.17.0. A specially-crafted .dxf file can lead to a heap buffer overflow. An attacker can provide a malicious file to trigger this vulnerability.

Record
CVE-2021-21897
CVSS 3.0
8.8 HighCVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Weakness
CWE-191
Updated
2026-11-02
EUVDEUVD-2021-9068 8.8

A code execution vulnerability exists in the DL_Dxf::handleLWPolylineData functionality of Ribbonsoft dxflib 3.17.0. A specially-crafted .dxf file can lead to a heap buffer overflow. An attacker can provide a malicious file to trigger this vulnerability.

Record
EUVD-2021-9068
CVSS 3.0
8.8 HighCVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Updated
2026-11-03
GitHub AdvisoriesGHSA-ghgg-v38h-7v7m 8.8

A code execution vulnerability exists in the DL_Dxf::handleLWPolylineData functionality of...

A code execution vulnerability exists in the DL_Dxf::handleLWPolylineData functionality of Ribbonsoft dxflib 3.17.0. A specially-crafted .dxf file can lead to a heap buffer overflow. An attacker can provide a malicious file to trigger this vulnerability.

Record
GHSA-ghgg-v38h-7v7m
CVSS 3.1
8.8 HighCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Weakness
CWE-191, CWE-787
Updated
2026-11-02
NVD 8.8

A code execution vulnerability exists in the DL_Dxf::handleLWPolylineData functionality of Ribbonsoft dxflib 3.17.0. A specially-crafted .dxf file can lead to a heap buffer overflow. An attacker can provide a malicious file to trigger this vulnerability.

Record
CVE-2021-21897
CVSS 3.1
8.8 HighCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
CVSS 3.0
8.8 HighCVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
CVSS 2.0
6.8 MediumAV:N/AC:M/Au:N/C:P/I:P/A:P
Weakness
CWE-191, CWE-787
Updated
2026-11-02
OSV 8.8

A code execution vulnerability exists in the DL_Dxf::handleLWPolylineData functionality of Ribbonsoft dxflib 3.17.0. A specially-crafted .dxf file can lead to a heap buffer overflow. An attacker can provide a malicious file to trigger this vulnerability.

Record
CVE-2021-21897
CVSS 3.1
8.8 HighCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Updated
2026-11-02
OSVDEBIAN-CVE-2021-21897 8.8

A code execution vulnerability exists in the DL_Dxf::handleLWPolylineData functionality of Ribbonsoft dxflib 3.17.0. A specially-crafted .dxf file can lead to a heap buffer overflow. An attacker can provide a malicious file to trigger this vulnerability.

Record
DEBIAN-CVE-2021-21897
CVSS 3.1
8.8 HighCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Updated
2026-11-02
OSVUBUNTU-CVE-2021-21897 8.8

A code execution vulnerability exists in the DL_Dxf::handleLWPolylineData functionality of Ribbonsoft dxflib 3.17.0. A specially-crafted .dxf file can lead to a heap buffer overflow. An attacker can provide a malicious file to trigger this vulnerability.

Record
UBUNTU-CVE-2021-21897
CVSS 3.1
8.8 HighCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
CVSS 3.0
8.8 HighCVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Updated
2026-11-02
OSVopenSUSE-SU-2024:10730-1 No score

dxflib-devel-3.26.4-1.1 on GA media

These are all security issues fixed in the dxflib-devel-3.26.4-1.1 package on the GA media of openSUSE Tumbleweed.

Record
openSUSE-SU-2024:10730-1
Updated
2026-11-02

Affected products

Affected packages

Affected packages
PackageAffectedFixed
cloudcompare
Debian:12
 before 2.11.3-7.1
2.11.3-7.1
cloudcompare
Debian:13
 before 2.11.3-7.1
2.11.3-7.1
cloudcompare
Debian:14
 before 2.11.3-7.1
2.11.3-7.1
dxflib
Debian:12
 before 3.26.4-1
3.26.4-1
dxflib
Debian:13
 before 3.26.4-1
3.26.4-1
dxflib
Debian:14
 before 3.26.4-1
3.26.4-1
horizon-eda
Debian:12
 All versions, plus listed versions
2.4.0-12.4.0-1.12.5.0-12.6.0-12.6.0-2
Show 4 moreShow less
2.6.0-2.12.6.0-2.22.6.0-2.32.6.0-3
 None known
horizon-eda
Debian:13
 All versions, plus listed versions
2.6.0-2.22.6.0-2.32.6.0-3
 None known
horizon-eda
Debian:14
 All versions, plus listed versions
2.6.0-2.22.6.0-2.32.6.0-3
 None known
librecad
Debian:12
 All versions, plus listed versions
2.2.0-12.2.0.2-12.2.0.2-22.2.0.2-3
 None known
Show 12 moreShow less
Affected packages
PackageAffectedFixed
librecad
Debian:13
 All versions, plus listed versions
2.2.0.2-12.2.0.2-22.2.0.2-3
 None known
librecad
Debian:14
 All versions, plus listed versions
2.2.0.2-12.2.0.2-22.2.0.2-3
 None known
librecad
Debian:9
 before 2.1.2-1+deb9u4, plus listed versions
2.1.2-12.1.2-1+deb9u12.1.2-1+deb9u22.1.2-1+deb9u3
2.1.2-1+deb9u4
dxflib
Ubuntu:16.04:LTS
 All versions, plus listed versions
2.5.0.0-32.5.0.0-4
 None known
dxflib
Ubuntu:18.04:LTS
 All versions, plus listed versions
3.17.0-2
 None known
dxflib
Ubuntu:20.04:LTS
 All versions, plus listed versions
3.17.0-33.17.0-3build1
 None known
dxflib
Ubuntu:22.04:LTS
 All versions, plus listed versions
3.17.0-3build13.26.4-1
 None known
dxflib
Ubuntu:24.04:LTS
 All versions, plus listed versions
3.26.4-13.26.4-1build1
 None known
dxflib
Ubuntu:25.10
 All versions, plus listed versions
3.26.4-2
 None known
dxflib
Ubuntu:26.10
 All versions, plus listed versions
3.26.4-2build13.26.4-3
 None known
dxflib
Ubuntu:26.04:LTS
 All versions, plus listed versions
3.26.4-23.26.4-2build1
 None known
dxflib
openSUSE:Tumbleweed
 before 3.26.4-1.1
3.26.4-1.1

History

History
RecordedChangedSources
aliasesEUVD
first indexedCVE List, GitHub Advisories, NVD, OSV

Dates are when Every CVE recorded each change. Upstream dates may differ.

In short

CVE-2021-21897 is a high vulnerability (CVSS 8.8) in Ribbonsoft Dxflib, published September 8, 2021. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 2.89%, the 86th percentile. Fixed in cloudcompare 2.11.3-7.1.

References

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