Delta Electronics DOPSoft 2 Out-of-Bounds Write

Answer in brief

CVE-2021-38406 records a High severity vulnerability in Delta Electronics DOPSoft 2 Out-of-Bounds Write. The current sources mark it as known exploited. The current feed maps Delta Electronics/DOPSoft 2 (generic). Check affected ranges and fixed versions before updating.

Analysis pending evidence review

HOL Guard separates source facts from reviewed analysis. See the methodology.

Published Sep 17, 2021Updated Oct 21, 2025Source checked Sep 19, 2026First seen by HOL May 24, 2026Material review Oct 21, 2025

Upstream Advisory

Key facts

Risk: High
Exploitation: Known exploited
Affected software: 1 mapped package or product
Fix availability: Not reported

Why this deserves its current priority

A CVSS score is not reported in the current record. Known-exploitation status makes exposure review time-sensitive. Treat this as a source-backed prioritization signal, not a statement about your environment.

Analysis status

Analysis pending evidence review

Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.

Affected scope and exposure questions

The current feed maps Delta Electronics/DOPSoft 2 (generic). Check affected ranges and fixed versions before updating.

Mapped affected packages and fixed versions
Package	Affected range	Fixed version
Delta Electronics/DOPSoft 2generic	unspecified	Not reported

Recommended response

Check inventory. Check lockfiles and deployed manifests for Delta Electronics/DOPSoft 2.
Review the reported fix. Monitor this advisory for an available fix and review any installs of the affected package.

Evidence timeline and material changes

Published upstream
Sep 17, 2021
Evidence: source:cvelist:source_dates:source-dates:record
Source modified
Oct 21, 2025
Evidence: source:cvelist:source_dates:source-dates:record
First seen by HOL
May 24, 2026
Added to CISA KEV
Aug 25, 2022
Evidence: source:kev:kev:kev:record

Sources and claim methodology

Upstream source 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.

Quoted source text, attributed separately from HOL analysis.