CVE-2020-10039
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 · uneditedA vulnerability has been identified in SICAM MMU (All versions < V2.05), SICAM SGU (All versions), SICAM T (All versions < V2.18). An attacker in a privileged network position between a legitimate user and the web server might be able to conduct a Man-in-the-middle attack and gain read and write access to the transmitted data.
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 confidenceThis vulnerability allows Man-in-the-Middle attacks due to lack of proper encryption/transport security between users and the web server in the affected SICAM products. An attacker with privileged network position can intercept, read, and modify transmitted data.
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< 2.05all versions< 2.18CVSS 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
- High
- Privileges
- None
- User interaction
- None
- Scope
- Unchanged
- Confidentiality
- High
- Integrity
- High
- Availability
- High
CVSS:3.1/AV:N/AC:H/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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Identify the SICAM product variantDetermine which SICAM product (MMU, SGU, or T) is deployed in your environment. This can be done by checking the device model number, system documentation, or logging into the web interface and reviewing the device information page.Affected if The product is a SICAM MMU, SGU, or T device.
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Check the installed firmware versionAccess the device's web interface or use the device's management console to retrieve the firmware version. Compare this version against the affected ranges: SICAM MMU < 2.05, SICAM SGU all versions, SICAM T < 2.18.Affected if The firmware version falls within the affected ranges (MMU < 2.05, SGU any version, T < 2.18).
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Verify if HTTPS is enabled for the web serverCheck the web server configuration or settings panel in the device's admin interface to determine whether HTTP, HTTPS, or both are enabled. Look for transport security or SSL/TLS settings.Affected if HTTPS is not enabled or only HTTP is available for web server communications.
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Check for valid TLS/SSL certificatesExamine the web server's TLS/SSL certificate configuration. Verify if a valid, non-self-signed certificate is installed and properly configured. This can be done by inspecting the certificate details when accessing the web interface via HTTPS.Affected if No valid certificate is configured, or a self-signed certificate is in use without proper validation.
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Inspect web server transport security configurationReview the device's network security settings to confirm that TLS/SSL protocols are properly configured and enforced for all web communications. Check for any configuration options related to transport layer security.Affected if Transport security is not properly configured or is disabled.
If the device is a SICAM MMU, SGU, or T with firmware matching the affected versions AND HTTPS/TLS encryption is not enabled or not properly configured, the environment is vulnerable to CVE-2020-10039.
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 data2.052.18
Implement proper TLS/SSL encryption (HTTPS) for all web server communications and ensure valid certificates are used. Consider network segmentation to reduce attack surface and restrict privileged network access.
- Consultation6.0 h
- Implementation12.0 h
- Testing6.0 h
- Review / QA4.0 h
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Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2020-10039 — 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-2020-10039 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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