CVE-2021-21575
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 · uneditedDell BSAFE Micro Edition Suite, versions before 4.5.2, contain an Observable Timing Discrepancy Vulnerability.
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 · moderate confidenceDell BSAFE Micro Edition Suite versions prior to 4.5.2 contain an Observable Timing Discrepancy vulnerability, where variations in processing time during security-sensitive operations (typically cryptographic or authentication routines) can be measured by attackers to infer sensitive information such as cryptographic keys or credentials.
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< 4.5.2CVSS 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 Dell BSAFE MES versionLocate and retrieve the version of Dell BSAFE Micro Edition Suite installed in your environment. This may be found in product documentation, a version file, or by querying the product's runtime API or version information mechanism.Affected if The installed version is less than 4.5.2
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Compare version against vulnerable rangeCompare the identified version number to the affected range: versions prior to 4.5.2.Affected if Your version is below 4.5.2 (for example, 4.5.1, 4.5.0, 4.0.x, or any earlier release)
Your environment is affected if Dell BSAFE Micro Edition Suite is installed and its version is below 4.5.2.
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.
dbcve · scoped4.5.2
Upgrade to Dell BSAFE Micro Edition Suite version 4.5.2 or later. If immediate upgrade is not feasible, review and implement constant-time comparisons for any security-sensitive operations to eliminate timing variations.
4.5.2
- Identify the current version of Dell BSAFE Micro Edition Suite currently installed
- Download Dell BSAFE Micro Edition Suite version 4.5.2 or later from the official Dell support website
- Review the Dell upgrade documentation for specific upgrade procedures
- Perform the upgrade following Dell's official installation/upgrade guide
- Verify the installed version is 4.5.2 or later after upgrade
Generated from the published advisory — verify against the referenced sources before acting.
- Consultation4.0 h
- Implementation8.0 h
- Testing4.0 h
- Review / QA3.0 h
An estimate, not a bill — we confirm scope with you before any work starts. Need it this week? Rush from $5,408.
Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2021-21575 — 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-2021-21575 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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A place for practitioners to share what actually worked: a mitigation you’ve tested, a configuration change, a version- or environment-specific caveat, or a link to a verified patch. The most useful notes rise to the top as peers upvote them, so the signal stays high.
- 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
- No spam, self-promotion, credentials, or personal data