CVE-2021-42545
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 · uneditedAn insufficient session expiration vulnerability exists in Business-DNA Solutions GmbH’s TopEase® Platform Version <= 7.1.27, which allows a remote attacker to reuse, spoof, or steal other user and admin sessions.
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 confidenceAn insufficient session expiration vulnerability in TopEase® Platform version 7.1.27 and earlier allows remote attackers to reuse, spoof, or steal active user and administrator sessions due to improper session lifecycle management.
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<= 7.1.27CVSS 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
- None
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/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 TopEase Platform installation versionLocate the TopEase Platform installation and determine the installed version number. This is typically found in the application's about page, admin panel, installation directory, or version file provided with the software.Affected if The installed version is 7.1.27 or earlier (any version <= 7.1.27)
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Compare version against affected rangeCompare the identified version number to the affected range: version 7.1.27 and earlier. Consult vendor documentation if needed to confirm the exact version numbering scheme used.Affected if The version falls within <= 7.1.27 and the application handles user sessions
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Verify session expiration behaviorLog into the TopEase Platform with a test account, then observe the session behavior: note if the session remains valid after typical idle periods, check if session cookies or tokens persist beyond expected timeframes, and verify whether session invalidation occurs properly upon logout or timeout.Affected if Sessions remain active beyond expected expiration time, or sessions can be reused after explicit logout
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Inspect session management configurationIf accessible, examine the session management settings in the TopEase Platform administration interface, configuration files, or session timeout parameters to determine if session expiration is properly enforced.Affected if No session timeout is configured, or timeout is set to an excessively long duration, or session invalidation is not implemented
A user is affected if the installed TopEase Platform version is 7.1.27 or earlier AND the application does not properly enforce session expiration or invalidate sessions upon logout.
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 dataUpgrade TopEase® Platform to a version beyond 7.1.27 that implements proper session timeout and secure session invalidation mechanisms, or manually configure appropriate session expiration policies if supported.
- Consultation4.0 h
- Implementation8.0 h
- Testing4.0 h
- Review / QA3.0 h
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Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2021-42545 — 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-2021-42545 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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