November 13, 2026 Follow Egret
CVE-2021-38406 · CVE record: PUBLISHED

Delta Electronics DOPSoft 2 Out-of-Bounds Write

Delta Electronics DOPSoft 2

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.

Exploitation evidence

Known exploited · CISA KEV listed

Added 2022-08-25. Ransomware campaign use: Unknown.

CISA required action: The impacted product is end-of-life and should be disconnected if still in use.

CISA due date: 2022-09-15. This is the catalog’s deadline, not an assessment of your organization’s exposure.

KEV checked 13 Nov 2026, 00:20 Jerusalem · Original catalog ↗

Reported products and versions

Delta Electronics / DOPSoft 2

Default status: Not specified

  • affected: unspecified to ≤ 2.00.07 (custom)

Fixes and workarounds

DOPSoft 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

Sources and related reporting

CVE Program record ↗ · Download tracked evidence as JSON

Observed change timeline

History begins when Egret first downloads each source. It is not the complete upstream CVE history.

12 Nov 2026, 18:20 Jerusalem · EPSS observation updated

Stored EPSS snapshot at this observation.

{
  "date": "2026-11-12",
  "epss": 0.76428,
  "percentile": 0.99547
}
10 Nov 2026, 18:20 Jerusalem · EPSS observation updated

Stored EPSS snapshot at this observation.

{
  "date": "2026-11-10",
  "epss": 0.76428,
  "percentile": 0.99544
}
09 Nov 2026, 18:20 Jerusalem · EPSS observation updated

Stored EPSS snapshot at this observation.

{
  "date": "2026-11-09",
  "epss": 0.76428,
  "percentile": 0.99544
}
08 Nov 2026, 18:20 Jerusalem · EPSS observation updated

Stored EPSS snapshot at this observation.

{
  "date": "2026-11-08",
  "epss": 0.76428,
  "percentile": 0.99543
}
07 Nov 2026, 18:20 Jerusalem · EPSS observation updated

Stored EPSS snapshot at this observation.

{
  "date": "2026-11-07",
  "epss": 0.76428,
  "percentile": 0.99543
}
06 Nov 2026, 18:20 Jerusalem · EPSS observation updated

Stored EPSS snapshot at this observation.

{
  "date": "2026-11-06",
  "epss": 0.76428,
  "percentile": 0.99543
}
06 Nov 2026, 06:20 Jerusalem · EPSS observation updated

Stored EPSS snapshot at this observation.

{
  "date": "2026-11-05",
  "epss": 0.76428,
  "percentile": 0.99543
}
05 Nov 2026, 06:20 Jerusalem · CVE Program record changed

Stored CNA snapshot at this observation.

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04 Nov 2026, 18:20 Jerusalem · EPSS observation updated

Stored EPSS snapshot at this observation.

{
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03 Nov 2026, 18:20 Jerusalem · EPSS observation updated

Stored EPSS snapshot at this observation.

{
  "date": "2026-11-03",
  "epss": 0.76428,
  "percentile": 0.99542
}
03 Nov 2026, 02:22 Jerusalem · EPSS observation updated

Stored EPSS snapshot at this observation.

{
  "date": "2026-11-02",
  "epss": 0.76428,
  "percentile": 0.99541
}
03 Nov 2026, 02:22 Jerusalem · CISA KEV status changed

Stored KEV snapshot at this observation.

{
  "cveID": "CVE-2021-38406",
  "cwes": [
    "CWE-787"
  ],
  "dateAdded": "2022-08-25",
  "dueDate": "2022-09-15",
  "forensicTriage": "No",
  "knownRansomwareCampaignUse": "Unknown",
  "notes": "https://www.cisa.gov/uscert/ics/advisories/icsa-21-252-02; https://nvd.nist.gov/vuln/detail/CVE-2021-38406",
  "product": "DOPSoft 2",
  "requiredAction": "The impacted product is end-of-life and should be disconnected if still in use.",
  "shortDescription": "Delta Electronics DOPSoft 2 lacks proper validation of user-supplied data when parsing specific project files (improper input validation) resulting in an out-of-bounds write that allows for code execution.",
  "vendorProject": "Delta Electronics",
  "vulnerabilityName": "Delta Electronics DOPSoft 2 Improper Input Validation Vulnerability"
}
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