CVE-2025-4124
Official description Straight from the sourceThe vendor's or NVD's own wording, published unedited. Authoritative, but often terse — it says what broke, rarely what to do.
NVD · uneditedDelta Electronics ISPSoft version 3.20 is vulnerable to an Out-Of-Bounds Write vulnerability that could allow an attacker to execute arbitrary code when parsing ISP file.
Technical summary Written by usOur analysis, written from the advisory, the CVSS vector and the affected-version data. It adds context the advisory leaves out, and never invents facts that are not in the source.
dbcve analysis · moderate confidenceDelta Electronics ISPSoft version 3.20 contains an out-of-bounds write vulnerability during ISP file parsing. This memory corruption flaw can be triggered by a specially crafted ISP file, potentially allowing an attacker to achieve arbitrary code execution on the affected system.
Verify against the referenced sources before acting — the references below are authoritative for this CVE, this summary is not.
Affected products & versions What the vendor confirmedThe version ranges the vendor confirmed as vulnerable. If your version sits inside a range here, treat yourself as exposed until you have upgraded.
NVD · CPE data< 3.21CVSS breakdown How the score is builtThe industry scoring standard. It rates how the flaw is reached, what it takes to exploit, and what an attacker gains — the score is derived from those, not the other way round.
From the vector- Attack vector
- Network
- Complexity
- Low
- Privileges
- None
- User interaction
- None
- Scope
- Unchanged
- Confidentiality
- High
- Integrity
- High
- Availability
- High
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Am I affected? How to checkSteps we derive from the advisory and the affected-version data, so you can decide whether this CVE reaches your setup. They are a guide, not a scan — your own configuration is the authority.
dbcve checksWork through these to decide whether this CVE applies to you.
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Confirm ISPSoft installationLocate ISPSoft on the system - check Program Files for Delta Electronics ISPSoft, or search for ispsoft.exe. Also verify if ISPSoft is listed in installed programs via Windows Settings or registry.Affected if ISPSoft is installed on the system
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Identify installed ISPSoft versionRight-click on the ISPSoft executable (ispsoft.exe), select Properties, and view the Details tab for version information. Alternatively, open ISPSoft and check Help > About.Affected if The version shown is 3.20 or any version lower than 3.21
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Check for newer ISPSoft versionsSearch Delta Electronics official website or check within ISPSoft for updates to determine if version 3.21 or later is available.Affected if Version 3.21 or later is not installed; the installed version remains at 3.20 or below
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Review ISP file handling exposureIdentify whether the system routinely opens ISP files from external or untrusted sources. Check recent file access history for .isp files and note their origin (local, network share, email attachment, or downloaded).Affected if Users routinely open ISP files from untrusted or unknown sources, enabling the attack vector
The system is affected if ISPSoft version 3.20 (or any version below 3.21) is installed and the system parses ISP files, particularly from untrusted sources.
Generated from the published advisory. Verify against your own configuration.
Remediation Closing itWhat it takes to close this. Where a vendor fix exists we point at it; where none exists we say so plainly, and can build one. Effort estimates are scoped from the advisory, not from your codebase.
dbcve · scoped3.21
Apply any vendor-supplied patch for ISPSoft 3.20 when available; until then, restrict ISP file sources to trusted files only, isolate affected systems from untrusted networks, and consider network segmentation to limit exposure.
ISPSoft version 3.21
- 1. Navigate to the official Delta Electronics download portal at filecenter.deltaww.com
- 2. Locate and download ISPSoft version 3.21 or later
- 3. Verify the file integrity using checksums if provided
- 4. Close any running instances of ISPSoft
- 5. Install version 3.21 following the vendor's installation instructions
- 6. Test that ISP files can be parsed correctly in the updated version
- 7. Ensure all users upgrade to version 3.21 or later on all affected systems
Generated from the published advisory — verify against the referenced sources before acting.
- Consultation6.0 h
- Implementation4.0 h
- Testing8.0 h
- Review / QA4.0 h
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Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2025-4124 — or any other known-vulnerable package — straight from your lock files. Free and open source; it runs locally and uploads nothing.
References Go to the primary sourcePrimary sources — vendor advisories, patches and trackers. Where our summary and a reference disagree, the reference wins.
Primary sourcesPractitioner notes
ContributedPeer-ranked notes from engineers who’ve handled CVE-2025-4124 in production — separate from our analysis above.
The advisory tells you what broke. It rarely tells you what actually worked. If you’ve dealt with this one, that detail is what the next engineer is searching for.
- The version that genuinely resolved it — not the one the vendor claimed
- A config change or rule that shut the vector down
- A gotcha in the upgrade path that cost you an afternoon
No notes yet
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- Verified mitigations, workarounds, and config changes
- Version or environment caveats, and links to real fixes
- No weaponised exploit code, or anything meant to cause harm
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