CVE-2020-10044
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 with access to the network could be able to install specially crafted firmware to the device.
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 is a firmware integrity vulnerability in Siemens SICAM industrial control devices where insufficient authentication/verification during firmware updates allows an attacker with network access to install malicious firmware. The lack of cryptographic signing or authentication checks enables complete device compromise through specially crafted firmware images.
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
- Low
- Privileges
- None
- User interaction
- None
- Scope
- Unchanged
- Confidentiality
- None
- Integrity
- High
- Availability
- None
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/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 SICAM device model and firmware versionAccess the device web interface, console, or management software and locate the firmware version information. For SICAM MMU, check under Device Information or Firmware section. For SICAM SGU and T, use the same or the device's configuration tool.Affected if The device is a SICAM MMU with firmware below 2.05, a SICAM SGU with any firmware version, or a SICAM T with firmware below 2.18
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Check if firmware update interface is network-accessibleReview network exposure of the device. Determine if firmware update ports or services (typically HTTP/HTTPS-based management interfaces) are reachable from untrusted network segments.Affected if The device management interface is accessible from network segments that contain untrusted or outside parties
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Verify authentication requirements for firmware updatesExamine the device configuration settings for firmware update operations. Look for options related to firmware authentication, verification, or update protection within the device security or administration settings.Affected if No authentication or verification is required or enabled for firmware update operations
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Confirm cryptographic signing verification is enabledCheck if the device validates cryptographic signatures on firmware images before applying updates. This may be listed as signature verification, secure boot, or firmware validation in the device security settings.Affected if Firmware signature verification or cryptographic signing validation is disabled or not available on the device
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Review network segmentation and access controlsInspect firewall rules, access control lists, or network zone configurations to determine what network entities can initiate firmware updates to the SICAM device.Affected if Unrestricted or unmonitored network access to the firmware update function exists from non-administrative network segments
A user is affected if they operate any SICAM MMU below V2.05, SICAM SGU at any version, or SICAM T below V2.18, and the firmware update interface is accessible without proper authentication and signature verification.
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
Update SICAM MMU to version V2.05 or later and SICAM T to version V2.18 or later. For SICAM SGU (no patch available), implement network segmentation, restrict network access to trusted parties, and monitor for anomalous firmware update attempts.
- Consultation3.0 h
- Implementation6.0 h
- Testing3.0 h
- Review / QA2.0 h
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Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2020-10044 — 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-2020-10044 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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