CVE-2021-44524
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 SiPass integrated V2.76 (All versions), SiPass integrated V2.80 (All versions), SiPass integrated V2.85 (All versions), Siveillance Identity V1.5 (All versions), Siveillance Identity V1.6 (All versions < V1.6.284.0). Affected applications insufficiently limit the access to the internal user authentication service. This could allow an unauthenticated remote attacker to trigger several actions on behalf of valid user accounts.
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 confidenceInsufficient access control on the internal user authentication service in SiPass integrated and Siveillance Identity allows unauthenticated remote attackers to bypass authentication and perform actions on behalf of valid user accounts. This is a critical authentication bypass vulnerability in access control software used for physical security.
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= 2.76= 2.80= 2.85>= 1.6, <= 1.6.284.0= 1.5CVSS 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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Identify installed productLocate and inspect the installed Siemens physical security software - either Sipass Integrated or Siveillance Identity. Check program files, installation directories, or system inventory for the product name.Affected if Neither product is installed, then not affected
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Determine installed versionCheck the installed version of the product by reviewing software inventory, the application itself (typically in About/Help menu), or installation logs. Note the exact version number.Affected if Version is 2.76, 2.80, or 2.85 for Sipass Integrated, OR 1.5, OR between 1.6 and 1.6.284.0 inclusive for Siveillance Identity - these are the affected ranges
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Locate authentication serviceIdentify the internal user authentication service component used by the installed product. This is typically a Windows service or web service handling user credential validation for the physical access system.Affected if The authentication service exists and is running as part of the SiPass or Siveillance installation
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Assess network accessibilityReview network configuration, firewall rules, and exposed ports to determine if the authentication service port is reachable from network segments outside the trusted internal zone. Check if the service binds to 0.0.0.0 or external interfaces.Affected if The authentication service port is accessible from untrusted networks or non-admin segments - this exposure enables remote unauthenticated attackers to reach it
You are affected if your installed version matches any of the affected version ranges (Sipass Integrated 2.76/2.80/2.85, Siveillance Identity 1.5, or 1.6 through 1.6.284.0) AND the authentication service is network-accessible from untrusted segments.
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 dataApply vendor patches (Siveillance Identity V1.6.284.0 or later) and implement network segmentation to restrict unauthorized access to the authentication service. Verify all user authentication flows after patching.
- Consultation6.0 h
- Implementation8.0 h
- Testing8.0 h
- Review / QA4.0 h
An estimate, not a bill — we confirm scope with you before any work starts. Need it this week? Rush from $7,296.
Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2021-44524 — 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-2021-44524 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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