CVE-2020-27293

Code execution via DPA file type confusion

Published Jan 11, 2021 · Updated Aug 4, 2024

Type confusion in Delta Electronics CNCSoft-B 1.0.0.2 and earlier allows remote attackers to execute code through a crafted DPA file. The DOPSoft DPA parser fails to validate attacker-supplied project data before treating it as an incompatible type, corrupting process memory. Exploitation requires the target to visit a malicious page or open the file, after which code runs in the context of the current process.

CVSS severity7.8
High
EPSS probability1.98%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
Coverage for this vulnerability

See if you're affected

Explore vulnerability checks for your environment with Hinoki.

Book a demo

Summary

What happened

Type confusion in Delta Electronics CNCSoft-B 1.0.0.2 and earlier allows remote attackers to execute code through a crafted DPA file. The DOPSoft DPA parser fails to validate attacker-supplied project data before treating it as an incompatible type, corrupting process memory. Exploitation requires the target to visit a malicious page or open the file, after which code runs in the context of the current process.

The record

CVE
CVE-2020-27293
Published
Jan 11, 2021
Updated
Aug 4, 2024
Vendor
Delta Electronics, Inc.
Product
CNCSoft-B
Classifications
CWE-843, T1204.002, T1203
Attack vector
local
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jan 11, 2021CVE publishedPublication date reported by the CVE source.
  2. Aug 4, 2024Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

Compare your product and version with the public record. A matching version still requires validation against your environment.

Is a vulnerable build present?

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

  1. Affected versionversion=CNCSoft-B Versions 1.0.0.2 and prior

What conditions does exploitation require?

Attack vectorlocal
Required privilegesunauthenticated

What is affected?

Delta Electronics, Inc. · CNCSoft-Bversion=CNCSoft-B Versions 1.0.0.2 and prior

Published CVSS scores

7.8Zero Day InitiativeCVSS: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.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorlocal
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-843Access of Resource Using Incompatible Type ('Type Confusion')
T1204.002User Execution: Malicious File
T1203Exploitation for Client Execution

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

See the directory against your own environment.

Your stack

Check the software in your environment

Book a demo to see how Hinoki identifies affected software and validates exploitability in your environment.

Book a demo