CVE-2021-27783
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 · uneditedUser generated PPKG file for Bulk Enroll may have unencrypted sensitive information exposed.
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 confidenceUser-generated provisioning package (PPKG) files used for bulk device enrollment in an enterprise mobility management system contain sensitive information (likely credentials or configuration data) that is stored without encryption, allowing unauthorized access to that sensitive data.
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= 2.0= 2.1= 2.0= 2.1CVSS 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
- Network
- Complexity
- Low
- Privileges
- Low
- User interaction
- None
- Scope
- Unchanged
- Confidentiality
- High
- Integrity
- None
- Availability
- None
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/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 installed product and versionCheck the installed version of Hcltech Bigfix Mobile or Hcltech Bigfix Modern Client Management. Look in the application program files directory, check the software inventory, or run the product's version query command.Affected if The installed version is exactly 2.0 or 2.1 of either product.
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Locate provisioning package (PPKG) filesSearch the filesystem for .ppkg files. Common locations include the product's configuration directory, enrollment data folder, or any designated provisioning package storage location.Affected if PPKG files exist on the system.
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Inspect PPKG file contentsOpen or extract the PPKG files and examine their contents. Look for any plaintext sensitive data such as passwords, tokens, API keys, or unencrypted configuration settings.Affected if The PPKG files contain readable sensitive information in plaintext (not encrypted).
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Check file permissions on PPKG filesReview the access control list (ACL) on the PPKG files to determine which users or groups can read them. On Windows, use icacls or file properties security tab.Affected if Users other than authorized administrators can read the PPKG files.
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Verify encryption status of PPKG storageExamine how PPKG files are stored. Check if the storage location uses encryption at rest (such as BitLocker, EFS, or encrypted filesystem) or if the files themselves are encrypted with a proper encryption mechanism.Affected if PPKG files are stored without encryption at rest and are accessible to unauthorized users.
A user is affected if they have Hcltech Bigfix Mobile or Modern Client Management version 2.0 or 2.1 installed with existing PPKG files that contain unencrypted sensitive data.
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 dataEncrypt PPKG files at rest and in transit, implement secure storage mechanisms with proper access controls, and rotate any exposed credentials immediately.
- Consultation4.0 h
- Implementation8.0 h
- Testing6.0 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 $6,176.
Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2021-27783 — 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-2021-27783 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