CVE-2025-3481
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 · uneditedMedDream PACS Server DICOM File Parsing Stack-based Buffer Overflow Remote Code Execution Vulnerability. This vulnerability allows remote attackers to execute arbitrary code on affected installations of MedDream PACS Server. Authentication is not required to exploit this vulnerability. The specific flaw exists within the parsing of DICOM files. The issue results from the lack of proper validation of the length of user-supplied data prior to copying it to a fixed-length stack-based buffer. An attacker can leverage this vulnerability to execute code in the context of the service account. Was ZDI-CAN-25827.
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 · high confidenceStack-based buffer overflow in MedDream PACS Server's DICOM file parsing. The vulnerability exists due to insufficient validation of user-supplied data length before copying to a fixed-length stack buffer, allowing remote attackers to execute arbitrary code in the service account context without authentication.
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< 7.3.5.860CVSS 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
- Local
- Complexity
- Low
- Privileges
- None
- User interaction
- Required
- Scope
- Unchanged
- Confidentiality
- High
- Integrity
- High
- Availability
- High
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/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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Identify MedDream PACS Server installationLocate the MedDream PACS Server installation directory and check for version information files, typically found in the program directory or via system inventory toolsAffected if Version is below 7.3.5.860 or version cannot be determined
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Confirm DICOM service is runningCheck if the MedDream PACS Server service or daemon is actively running, typically on ports used for DICOM communication (common ports include 104, 11112, or custom-configured ports)Affected if DICOM service is running and accepting connections
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Verify network exposureReview firewall rules and network configuration to determine if the DICOM listener port is accessible from untrusted networksAffected if DICOM port is exposed to untrusted or external network segments without authentication requirements
A system is affected if it runs MedDream PACS Server version below 7.3.5.860 with the DICOM parsing service enabled and accessible on the network.
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 · scoped7.3.5.860
Apply vendor patch when available; until then, restrict network access to PACS server and consider deploying intrusion detection to monitor for anomalous DICOM traffic.
7.3.5.860 or later
- Obtain MedDream PACS Server version 7.3.5.860 or later from the official Softneta/MedDream vendor channels
- Back up all existing PACS Server configuration files, database data, and any custom settings before proceeding
- Apply the upgrade to MedDream PACS Server following the vendor's documented upgrade procedures
- After upgrade completion, restart the PACS Server service to ensure all components load the updated version
- Verify the installation by checking the server version and confirming normal DICOM file processing operations resume
Generated from the published advisory — verify against the referenced sources before acting.
- Consultation4.0 h
- Implementation8.0 h
- Testing6.0 h
- Review / QA3.0 h
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Free · runs locallyCheck whether your project pulls in CVE-2025-3481 — 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-2025-3481 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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