CVE-2021-38406
HighExploitedPublic exploitDelta Electronic DOPSoft 2 (Version 2.00.07 and prior) lacks proper validation of user-supplied data when parsing specific project files.
Published Sep 10, 2021 · Updated Oct 21, 2025
Key Facts
Patch immediately- CVE-2021-38406 is a high-severity vulnerability (CVSS 7.8 v3.1) affecting Dopsoft (Deltaww), DOPSoft 2.
- It is exploited in the wild, listed in CISA KEV, Industry KEV feed, CIRCL KEV, ENISA EUVD since Aug 25, 2022. Public exploit code is available.
- EPSS estimates a 76% probability of exploitation in the next 30 days.
- Fixed versions are available, including Dopsoft <=2.00.07, Dopsoft 2.00.07.
- Brandefense priority: patch immediately, because it is listed as exploited in the wild.
CVSS v3.1
7.8
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
EPSS (30-day exploit likelihood)
76%
Higher than 99.5% of all scored CVEs
Exploited in the wild
Yes
4 catalog listings
Public exploit code
Available
Proof-of-concept or weaponized module
Get the full CVE-2021-38406 brief as a PDF
Every affected product and fixed release, exploitation status and a first 24 hours response checklist, emailed within minutes.
Description
Delta Electronic DOPSoft 2 (Version 2.00.07 and prior) lacks proper validation of user-supplied data when parsing specific project files. This could result in multiple out-of-bounds write instances. An attacker could leverage this vulnerability to execute code in the context of the current process.
Known-Exploited Catalog Listings
| Catalog | Added | Remediation due | Ransomware use |
|---|---|---|---|
| CISA KEV | Aug 25, 2022 | Sep 15, 2022 | Not reported |
| Industry KEV feed | Aug 25, 2022 | Sep 15, 2022 | Not reported |
| CIRCL KEV | Aug 25, 2022 | Sep 15, 2022 | Not reported |
| ENISA EUVD | Aug 25, 2022 | n/a | Not reported |
Required action: The impacted product is end-of-life and should be disconnected if still in use.
Affected Products
2 affected entries in total| Product | Affected versions | Fixed in |
|---|---|---|
| DopsoftDeltaww | See advisory | 2.00.07 |
| DOPSoft 2 | >= unspecified | n/a |
Patched Releases
Dopsoft
<=2.00.07
Timeline
Publicly disclosed
Sep 10, 2021
Added to CISA KEV
Aug 25, 2022
Added to Industry KEV feed
Aug 25, 2022
Added to CIRCL KEV
Aug 25, 2022
Added to ENISA EUVD
Aug 25, 2022
Last updated
Oct 21, 2025
Weakness Type
- CWE-787 Out-of-bounds Write
References
- advisoryhttps://us-cert.cisa.gov/ics
- advisoryhttps://us-cert.cisa.gov/ics/advisories/icsa-21-252-02
- advisoryhttps://us-cert.cisa.gov/report
- advisoryhttps://www.first.org/cvss/calculator/3.0#CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
- advisoryUSOM advisory
FAQ
Common Questions.
Delta Electronic DOPSoft 2 (Version 2.00.07 and prior) lacks proper validation of user-supplied data when parsing specific project files.
Affected: Dopsoft (Deltaww); DOPSoft 2 versions >= unspecified. The full list is in the CVE brief.
It is exploited in the wild, listed in CISA KEV, Industry KEV feed, CIRCL KEV, ENISA EUVD since Aug 25, 2022.
Yes. It was added on Aug 25, 2022 with a federal remediation due date of Sep 15, 2022.
Public exploit code is available.
Fixed versions are available, including Dopsoft <=2.00.07, Dopsoft 2.00.07.
Brandefense priority: patch immediately, because it is listed as exploited in the wild.
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