CVE-2021-38404

Code execution via malformed project-file parsing

Published Sep 17, 2021 · Updated Apr 23, 2025

Heap-based buffer overflow in Delta Electronics DOPSoft 2 2.00.07 and earlier allows attackers to execute code via a crafted project file. The project-file parser fails to validate user-supplied data before writing it into a heap buffer, allowing data to overrun the allocation. Exploitation requires a user to open the file, and code runs with the privileges of the DOPSoft process.

CVSS severity7.8
High
EPSS probability1.04%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Heap-based buffer overflow in Delta Electronics DOPSoft 2 2.00.07 and earlier allows attackers to execute code via a crafted project file. The project-file parser fails to validate user-supplied data before writing it into a heap buffer, allowing data to overrun the allocation. Exploitation requires a user to open the file, and code runs with the privileges of the DOPSoft process.

The record

CVE
CVE-2021-38404
Published
Sep 17, 2021
Updated
Apr 23, 2025
Vendor
Delta Electronics, Inc.
Product
DOPSoft 2
Classifications
CWE-122, T1204.002
Attack vector
local
Privileges
unauthenticated

Timeline

How it unfolded

  1. Sep 17, 2021CVE publishedPublication date reported by the CVE source.
  2. Apr 23, 2025Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=unspecified <=2.00.07

What conditions does exploitation require?

Attack vectorlocal
Required privilegesunauthenticated

What is affected?

Delta Electronics, Inc. · DOPSoft 2version=unspecified <=2.00.07

Published CVSS scores

7.8NISTCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
6.8NISTAV:N/AC:M/Au:N/C:P/I:P/A:P
7.8ICS-CERTCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

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No observations available

Sep 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorlocal
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-122Heap-based Buffer Overflow
T1204.002User Execution Malicious File

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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Your stack

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