CVE-2021-43280

Name: CVE-2021-43280
Creator: NVD / NIST
Published: 2021-11-14T21:15:08.22+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 7.8/10EPSS 1.84%

Last modified Jun 17, 2026

CVE-2021-43280 is a high-severity vulnerability rated 7.8/10 on the CVSS scale. A stack-based buffer overflow vulnerability exists in the DWF file reading procedure in Open Design Alliance Drawings SDK before 2022.8. The issue results from the lack of proper validation of the length of user-supplied data before copying it to a stack-based buffer. EPSS estimates a 1.84% chance of exploitation in the next 30 days.

Description

A stack-based buffer overflow vulnerability exists in the DWF file reading procedure in Open Design Alliance Drawings SDK before 2022.8. The issue results from the lack of proper validation of the length of user-supplied data before copying it to a stack-based buffer. An attacker can leverage this vulnerability to execute code in the context of the current process.

Metrics

CVSS 3.1

7.8/10

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

EPSS Probability

1.84%

76.2th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-787

Affected Software

Vendor	Product	Versions
Opendesign	Drawings Software Development Kit	< 2022.8

References

https://www.opendesign.com/security-advisoriesVendor Advisory
https://www.zerodayinitiative.com/advisories/ZDI-21-1340/Third Party Advisory, VDB Entry
https://www.zerodayinitiative.com/advisories/ZDI-21-1341/Third Party Advisory, VDB Entry
https://www.zerodayinitiative.com/advisories/ZDI-21-1342/Third Party Advisory, VDB Entry
https://www.zerodayinitiative.com/advisories/ZDI-21-1343/Third Party Advisory, VDB Entry
https://www.zerodayinitiative.com/advisories/ZDI-21-1345/Third Party Advisory, VDB Entry
https://www.zerodayinitiative.com/advisories/ZDI-21-1355/Third Party Advisory, VDB Entry
https://www.zerodayinitiative.com/advisories/ZDI-21-1356/Third Party Advisory, VDB Entry
https://www.opendesign.com/security-advisoriesVendor Advisory
https://www.zerodayinitiative.com/advisories/ZDI-21-1340/Third Party Advisory, VDB Entry
https://www.zerodayinitiative.com/advisories/ZDI-21-1341/Third Party Advisory, VDB Entry
https://www.zerodayinitiative.com/advisories/ZDI-21-1342/Third Party Advisory, VDB Entry
https://www.zerodayinitiative.com/advisories/ZDI-21-1343/Third Party Advisory, VDB Entry
https://www.zerodayinitiative.com/advisories/ZDI-21-1345/Third Party Advisory, VDB Entry
https://www.zerodayinitiative.com/advisories/ZDI-21-1355/Third Party Advisory, VDB Entry
https://www.zerodayinitiative.com/advisories/ZDI-21-1356/Third Party Advisory, VDB Entry

Timeline

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

Frequently Asked Questions

What is CVE-2021-43280?

How severe is CVE-2021-43280?

CVE-2021-43280 has a CVSS score of 7.8/10 (HIGH severity). The EPSS model estimates a 1.84% probability of exploitation in the next 30 days.

How do I fix CVE-2021-43280?

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-2021-43280?

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

Scan your code now

Source: NVD / NIST