Skip to main content
ExploitedIn CISA KEVFix available

CVE-2021-38406

Exploitation confirmed. First attested on 2022-08-25 by CISA-ADP, CISA KEV, GCVE · kevintel.

  • Published2021-09-17
  • 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

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.

Timeline

dates in UTC
  1. 2021-09-1719:15CVE publishedNVD
  2. 2022-08-25Added to the CISA KEV catalogCISA KEV
  3. 2022-08-25Listed as exploited by GCVEGCVE
  4. 2022-08-25Exploitation first reportedCISA KEV
  5. 2025-02-0414:44SSVC exploitation set to activeCISA-ADP

Observed activity

isMalicious corpus · updated 2026-11-03 15:37 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-2021-38406?format=txt
  • CSV export: https://api.ismalicious.com/edl/cve/CVE-2021-38406?format=csv
  • TAXII collection of exploited CVEs
  • The EDL and CSV take an API key on the Pro plan.

Versions per branch

NVD
Deltaww dopsoft
BranchAffectedFixed in
2.0≥ 2.00, ≤ 2.00.07no fix published

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

Products declared by the CNA1 product

As icscert, the CNA that assigned this CVE, declared them in the CVE record; versions as written.

  • Delta Electronics DOPSoft 2
    Affected
    • ≤ 2.00.07no fix statedcustom

Source: the CNA record (CVE Program), © The MITRE Corporation,CVE Terms of UseCVE recordupdated 2021-09-17

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-21-252-02 CISA1 known affected

    Delta Electronics DOPSoft 2 (Update A)

    DOPSoft 2: Version 2.00.07 and prior

Full record on NVD

Fix

  1. CISA’s required action: The impacted product is end-of-life and should be disconnected if still in use.due 2022-09-15
  2. Vendor fix CISA ICSA-21-252-02 · 1 productDOPSoft 2 will not receive an update to mitigate these vulnerabilities because it is an end-of-life product. Delta Electronics recommends users switch HMI devices to the DOP-100 family and then switch the software to DIAScreen in DIAStudio v1.1.2 (or later) (login required).
  3. Vendor fix CISA ICSA-21-252-02 · 1 productDOPSoft 2 will not receive an update to mitigate these vulnerabilities because it is an end-of-life product. Delta Electronics recommends users to switch to the replacement software when available.

Detection

Nuclei template
none so far
ProjectDiscovery
Exploit-DB
no entry
Exploit-DB
Proof-of-concept repositories
none listed
PoC-in-GitHub
Metasploit modules
none listed
Metasploit Framework

CISA Known Exploited Vulnerability

Date Added
2022-08-25
Patch Due Date
2022-09-15
Ransomware Use
Unknown
Required Action
The impacted product is end-of-life and should be disconnected if still in use.

Sources

Identifiers

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
2021-09-17
Last Modified
2026-06-17
NVD status
Analyzed
GitHub Advisory
GHSA-j3xh-c39x-qghw

Frequently asked questions

What is CVE-2021-38406?

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.

Is CVE-2021-38406 actively exploited?

Yes. CVE-2021-38406 is on the CISA Known Exploited Vulnerabilities (KEV) catalog, meaning it has been confirmed as actively exploited in the wild. CISA requires federal agencies to patch by 2022-09-15.

What is the CVSS score for CVE-2021-38406?

CVE-2021-38406 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.

Hear about the next vulnerability in your software

Surveillance reads the versions in your stack — a domain, a lockfile or a list — checks each CVE against the ranges its sources publish, and alerts you when one you run is exploited or enters CISA KEV. A version it cannot read stays « version not verified ».

Get alerts for this productCISA KEV additions, August 2022Search CVEs

No credit card required · No monthly cap on website lookups · 250 API requests/month

Go further

Related vulnerabilities

Same product first, then the same vendor advisory and the same publication week.

Back to CVE Database

Sources for this record