CVE-2024-39883

Code execution via oversized DPAX file data

Published Jul 9, 2024 · Updated Aug 27, 2025

Heap-based buffer overflow in Delta Electronics CNCSoft-G2 2.0.0.5 allows attackers to execute code through a crafted DPAX file. The DPAX parser copies attacker-controlled data into a fixed-length heap buffer without validating its length. Exploitation requires the target to visit a malicious page or open a malicious file, after which code runs in the current process.

CVSS severity8.4
High
EPSS probability0.74%
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 CNCSoft-G2 2.0.0.5 allows attackers to execute code through a crafted DPAX file. The DPAX parser copies attacker-controlled data into a fixed-length heap buffer without validating its length. Exploitation requires the target to visit a malicious page or open a malicious file, after which code runs in the current process.

The record

CVE
CVE-2024-39883
Published
Jul 9, 2024
Updated
Aug 27, 2025
Vendor
Delta Electronics, Inc.
Product
CNCSoft-G2
Classifications
CWE-787, CWE-122, T1203, T1204.002
Attack vector
local
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jul 9, 2024CVE publishedPublication date reported by the CVE source.
  2. Aug 27, 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=2.0.0.5

What conditions does exploitation require?

Attack vectorlocal
Required privilegesunauthenticated

What is affected?

Delta Electronics, Inc. · CNCSoft-G2version=2.0.0.5

Published CVSS scores

8.4ICS-CERTCVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
7.8ICS-CERTCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
8.8NIST NVDCVSS:3.1/AV:N/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-787Out-of-bounds Write
CWE-122Heap-based Buffer Overflow
T1203Exploitation for Client Execution
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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