CVE-2025-4124

Code execution via unchecked CBDGL buffer copy

Published Apr 30, 2025 · Updated Apr 30, 2025

Out-of-bounds write in Delta Electronics ISPSoft 3.20 and earlier allows remote attackers to execute code via a crafted CBDGL file. The CBDGL parser copies attacker-controlled data into a fixed-length stack buffer without first validating the data length. Exploitation requires a user to open the malicious file or visit a malicious page, after which code runs in the context of the ISPSoft process.

CVSS severity7.8
High
EPSS probability0.35%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Out-of-bounds write in Delta Electronics ISPSoft 3.20 and earlier allows remote attackers to execute code via a crafted CBDGL file. The CBDGL parser copies attacker-controlled data into a fixed-length stack buffer without first validating the data length. Exploitation requires a user to open the malicious file or visit a malicious page, after which code runs in the context of the ISPSoft process.

The record

CVE
CVE-2025-4124
Published
Apr 30, 2025
Updated
Apr 30, 2025
Vendor
Delta Electronics, Inc.
Product
ISPSoft
Classifications
CWE-787, CAPEC-100, T1204.002, T1203
Attack vector
local
Privileges
unauthenticated

Timeline

How it unfolded

  1. Apr 30, 2025CVE publishedPublication date reported by the CVE source.
  2. Apr 30, 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=0 <=3.20

What conditions does exploitation require?

Attack vectorlocal
Required privilegesunauthenticated

What is affected?

Delta Electronics, Inc. · ISPSoftversion=0 <=3.20

Published CVSS scores

9.8NIST NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
7.8Delta ElectronicsCVSS: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-787Out-of-bounds Write
CAPEC-100Overflow Buffers
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

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Your stack

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