CVE-2021-43273

Name: CVE-2021-43273
Creator: NVD / NIST
Published: 2021-11-14T21:15:07.9+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

LOWCVSS 3.3/10EPSS 1.41%

Last modified Jun 17, 2026

CVE-2021-43273 is a low-severity vulnerability rated 3.3/10 on the CVSS scale. An Out-of-bounds Read vulnerability exists in the DGN file reading procedure in Open Design Alliance Drawings SDK before 2022.11. Crafted data in a DGN file and lack of verification of input data can trigger a read past the end of an allocated buffer. EPSS estimates a 1.41% chance of exploitation in the next 30 days.

Description

An Out-of-bounds Read vulnerability exists in the DGN file reading procedure in Open Design Alliance Drawings SDK before 2022.11. Crafted data in a DGN file and lack of verification of input data can trigger a read past the end of an allocated buffer. An attacker can leverage this vulnerability to execute code in the context of the current process.

Metrics

CVSS 3.1

3.3/10

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

EPSS Probability

1.41%

69.2th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-125

Affected Software

Vendor	Product	Versions
Opendesign	Drawings Sdk	< 2022.11

References

https://www.opendesign.com/security-advisoriesVendor Advisory
https://www.zerodayinitiative.com/advisories/ZDI-21-1281/Third Party Advisory, VDB Entry
https://www.zerodayinitiative.com/advisories/ZDI-21-1291/Third Party Advisory, VDB Entry
https://www.zerodayinitiative.com/advisories/ZDI-21-1351/Third Party Advisory, VDB Entry
https://www.zerodayinitiative.com/advisories/ZDI-21-1357/Third Party Advisory, VDB Entry
https://www.opendesign.com/security-advisoriesVendor Advisory
https://www.zerodayinitiative.com/advisories/ZDI-21-1281/Third Party Advisory, VDB Entry
https://www.zerodayinitiative.com/advisories/ZDI-21-1291/Third Party Advisory, VDB Entry
https://www.zerodayinitiative.com/advisories/ZDI-21-1351/Third Party Advisory, VDB Entry
https://www.zerodayinitiative.com/advisories/ZDI-21-1357/Third Party Advisory, VDB Entry

Timeline

Published: Nov 14, 2021
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2021-43273?

How severe is CVE-2021-43273?

CVE-2021-43273 has a CVSS score of 3.3/10 (LOW severity). The EPSS model estimates a 1.41% probability of exploitation in the next 30 days.

How do I fix CVE-2021-43273?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2021-43273?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST