CVE-2021-22152
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 Denial of Service due to Improper Input Validation vulnerability in the Management Console component of BlackBerry UEM version(s) 12.13.1 QF2 and earlier and 12.12.1a QF6 and earlier could allow an attacker to potentially to prevent any new user connections.
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 confidenceA Denial of Service vulnerability exists in the Management Console of BlackBerry UEM versions 12.13.1 QF2 and earlier, and 12.12.1a QF6 and earlier. The vulnerability stems from improper input validation, which could allow an attacker to prevent new user connections to the system.
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<= 12.12.0= 12.12.1a= 12.13.0= 12.13.1CVSS 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
- Local
- Complexity
- Low
- Privileges
- Low
- User interaction
- None
- Scope
- Unchanged
- Confidentiality
- None
- Integrity
- None
- Availability
- High
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/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 BlackBerry UEM installation and versionAccess the Management Console or use the system's software inventory to determine the installed version of BlackBerry Unified Endpoint Management. The version is typically visible in the console header or in the system configuration settings.Affected if The installed version matches <= 12.12.0, = 12.12.1a, = 12.13.0, or = 12.13.1, or falls within 12.13.1 QF2 and earlier, or 12.12.1a QF6 and earlier.
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Confirm Management Console is accessibleAttempt to access the BlackBerry UEM Management Console web interface using the configured URL or hostname on the standard ports (typically 443 or 8443).Affected if The Management Console is reachable and operational, meaning the vulnerable component is exposed.
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Verify ability to establish new user connectionsAttempt to initiate a new user connection or session to the UEM server through the Management Console or via the UEM client service endpoint.Affected if New user connections fail or are rejected, indicating the DoS condition may be present.
You are affected if BlackBerry UEM version 12.12.1a, 12.13.0, or 12.13.1 (or earlier) is installed and the Management Console component is accessible, as the improper input validation in this component could allow an attacker to prevent new user connections.
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 the vendor-provided Quick Fix (QF) updates to the affected BlackBerry UEM versions to address the improper input validation vulnerability.
- Consultation1.0 h
- Implementation2.0 h
- Testing2.0 h
- Review / QA1.0 h
An estimate, not a bill — we confirm scope with you before any work starts. Need it this week? Rush from $1,664.
Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2021-22152 — 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-2021-22152 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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