CVE-2021-43390 json
An Out-of-Bounds Write vulnerability exists when reading a DGN file using Open Design Alliance Drawings SDK before 2022.11.
published 2021-11-14 4 y ago modified 2026-06-17 4 mo ago also EUVD-2021-30325
- cvss
- 7.8
- version 3.1, NVD
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 1.7%
- EPSS 1.7% chance of exploitation in 30 days, percentile 77%
- public exploits
- 0
- none known
Summary
An Out-of-Bounds Write vulnerability exists when reading a DGN file using Open Design Alliance Drawings SDK before 2022.11. The specific issue exists within the parsing of DGN files. Crafted data in a DGN file and lack of proper validation of input data 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.
Patch / fix
- opendesign drawings_software_development_kit 2022.11
Exploit prediction
1.70% chance of exploitation in the next 30 days, higher than 77% of all scored CVEs (FIRST EPSS, 2026-11-08).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| NVD | 3.1 | 7.8 | CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H |
| NVD | 2.0 | 6.8 | AV:N/AC:M/Au:N/C:P/I:P/A:P |
Classification
- Weakness
-
- CWE-787 Out-of-bounds Write
References
-
opendesign.com
/security-advisories
vendor-advisory
-
zerodayinitiative.com
/advisories/ZDI-21-1348/
third-party-advisory, vdb-entry
-
zerodayinitiative.com
/advisories/ZDI-21-1347/
third-party-advisory, vdb-entry
-
zerodayinitiative.com
/advisories/ZDI-21-1362/
third-party-advisory, vdb-entry
Sources
- CVE List CVE-2021-43390
- NVD CVE-2021-43390
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