No exploitation reportedFix available

CVE-2021-43336

Q: Is CVE-2021-43336 actively exploited?

Active exploitation of CVE-2021-43336 has not been confirmed. Its EPSS score was 1.7% on 2026-10-22, the estimated probability of exploitation in the next 30 days.

Q: What is the CVSS score for CVE-2021-43336?

CVE-2021-43336 has a CVSS v3 base score of 7.8 (HIGH severity), with vector string CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H.

No exploitation reported by the sources we read.

Published2021-11-14
Fixed in13.3.0.1 · 12.4.0.13
WeaknessCWE-787

Am I affected?

With a domain, we read the version its public headers and pages expose. A distribution build can carry the fix under an older number.

Description

An Out-of-Bounds Write vulnerability exists when reading a DXF or DWG file using Open Design Alliance Drawings SDK before 2022.11. The specific issue exists within the parsing of DXF and DWG files. Crafted data in a DXF or DWG file (an invalid number of properties) can trigger a write operation past the end of an allocated buffer. An attacker can leverage this vulnerability to execute code in the context of the current process.

Timeline

dates in UTC

2021-11-1421:15CVE publishedNVD

Observed activity

isMalicious corpus · updated 2026-10-23 18:48 UTC

Indicators tagged with this CVE, per day0 indicators over 7 days

Block these indicators

Firewall list (EDL, text): https://api.ismalicious.com/edl/cve/CVE-2021-43336?format=txt
CSV export: https://api.ismalicious.com/edl/cve/CVE-2021-43336?format=csv
TAXII collection of exploited CVEs
The EDL and CSV take an API key on the Pro plan.

Versions per branch

NVD

Siemens teamcenter visualization

Branch	Affected	Fixed in	Source
13.x	≥ 13.2.0, < 13.3.0.1	13.3.0.1	NVD
12.4	≥ 12.4.0, < 12.4.0.13	12.4.0.13	NVD
13.1	= 13.1.0	no fix published	NVD

Opendesign drawings software development kit

Branch	Affected	Fixed in	Source
2022.11	< 2022.11	2022.11	NVD

Siemens jt2go

Branch	Affected	Fixed in	Source
—	all versions	no fix published	NVD

1 more product in the sources.

as publishedRanges as NVD and OSV publish them; a distribution’s build can be fixed under an older number.

Distribution builds and vendor advisories

Packages from OSV.dev and products from the vendors' CSAF advisories.

version not verifiedVersions not verified: read as OSV.dev and the vendors publish them, not checked against each vendor's release list.

Vendor advisories

ICSA-23-047-01 CISA1 known affected
Siemens Solid Edge
Solid Edge SE2022
ICSA-22-041-07 CISA5 known affected
Siemens Solid Edge, JT2Go, and Teamcenter Visualization
JT2Go · Teamcenter Visualization V12.4 · Teamcenter Visualization V13.1 · +2 more

Full record on NVD

Fix

Update Siemens teamcenter visualization to 13.3.0.1 · 12.4.0.13
Vendor fix CISA ICSA-23-047-01 · 1 productUpdate to V222.0MP12 or later version
Vendor fix CISA ICSA-22-041-07 · 1 productUpdate to V13.2.0.7 or later version
Vendor fix CISA ICSA-22-041-07 · 1 productUpdate to V12.4.0.13 or later version
Vendor fix CISA ICSA-22-041-07 · 1 productUpdate to V13.1.0.9 or later version
Vendor fix CISA ICSA-22-041-07 · 1 productUpdate to V13.3.0.1 or later version
Mitigation from the vendor CISA ICSA-23-047-01 · 1 productDo not open untrusted X_B, DWG, DXF, STL, STP, SLDPRT and PAR files in Solid Edge

Advisories and patches

www.opendesign.comVendor Advisory

Detection

Nuclei template: none so far
Exploit-DB: no entry
Proof-of-concept repositories: none listed

Sources

NVDCVSS 3.17.8read 2026-10-23
NVDCVSS 2.06.8read 2026-10-23
NVDweakness (CWE)CWE-787read 2026-10-23
FIRST EPSSEPSS score1.7 %2026-10-22

Technical details

CVSS v3 Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Published: 2021-11-14
Last Modified: 2026-06-17
NVD status: Modified

Frequently asked questions

What is CVE-2021-43336?

Is CVE-2021-43336 actively exploited?

Active exploitation of CVE-2021-43336 has not been confirmed. Its EPSS score was 1.7% on 2026-10-22, the estimated probability of exploitation in the next 30 days.

What is the CVSS score for CVE-2021-43336?

CVE-2021-43336 has a CVSS v3 base score of 7.8 (HIGH severity), with vector string CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H.

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