CVE-2025-3480
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 WEB DICOM Viewer Cleartext Transmission of Credentials Information Disclosure Vulnerability. This vulnerability allows network-adjacent attackers to disclose sensitive information on affected installations of MedDream WEB DICOM Viewer. Authentication is not required to exploit this vulnerability. The specific flaw exists within the Web Portal. The issue results from the lack of encryption when transmitting credentials. An attacker can leverage this vulnerability to disclose transmitted credentials, leading to further compromise. Was ZDI-CAN-25842.
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 confidenceMedDream WEB DICOM Viewer transmits user credentials in cleartext (unencrypted) over the network. An attacker with network adjacency can intercept these credentials by sniffing network traffic. The vulnerability exists in the Web Portal component where authentication data is sent without TLS encryption.
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= 7.3.2.840CVSS 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
- Adjacent
- Complexity
- Low
- Privileges
- None
- User interaction
- None
- Scope
- Unchanged
- Confidentiality
- High
- Integrity
- None
- Availability
- None
CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
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 versionLocate the MedDream installation directory and check the version file or application metadata. Common locations include the root installation folder or within the 'About' section of the web interface.Affected if The installed version is exactly 7.3.2.840
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Verify web server configuration for TLS/SSLExamine the web server configuration files (e.g., nginx.conf, httpd.conf, or the application's config files) to determine if HTTPS/TLS is enabled and configured.Affected if TLS/SSL is not enabled or not properly configured for the web portal
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Test for cleartext HTTP accessAttempt to access the MedDream web portal using HTTP (port 80) without encryption. Use a browser or curl command to http://<server>:<port> and observe if the login page loads over unencrypted connection.Affected if The web portal is accessible over HTTP without redirecting to HTTPS
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Capture network traffic during authenticationUse a network sniffer (such as Wireshark or tcpdump) to capture traffic while submitting login credentials to the MedDream portal. Analyze the captured packets to identify if credentials are transmitted in plaintext.Affected if Login credentials are observed in cleartext within the captured network packets
You are affected if you are running MedDream Pacs Server version 7.3.2.840 AND the web portal accepts unencrypted HTTP connections with credentials transmitted in cleartext.
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.
From vendor dataEnable HTTPS/TLS encryption on the MedDream WEB DICOM Viewer web server and ensure all authentication endpoints require encrypted connections. Configure the web server to enforce TLS 1.2+ and disable cleartext HTTP access.
- Consultation2.0 h
- Implementation4.0 h
- Testing2.0 h
- Review / QA1.0 h
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Free · runs locallyCheck whether your project pulls in CVE-2025-3480 — 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-2025-3480 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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