CVE-2021-38929
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 · uneditedIBM System Storage DS8000 Management Console (HMC) R8.5 88.5x.x.x, R9.1 89.1x.0.0, and R9.2 89.2x.0.0 could allow a remote attacker to obtain sensitive information through unpublished URLs. IBM X-Force ID: 210330.
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analysis · high confidenceIBM System Storage DS8000 Management Console (HMC) versions R8.5, R9.1, and R9.2 contain unpublished URLs that can be accessed by remote attackers to obtain sensitive information without authentication.
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= 88.50.0.0= 89.10.0.0= 89.20.0.0CVSS 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
- None
- Availability
- None
CVSS:3.1/AV:N/AC:L/PR:N/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.
-
Identify HMC firmware versionAccess the DS8000 Management Console web interface or use the HMC command line interface (dscli) with command: 'dscli -hmc hmc_name -cmd lshmc' or check via the HMC GUI under 'System Settings' > 'Hardware' > 'Management Console' to view the firmware versionAffected if The installed firmware version matches 88.50.0.0, 89.10.0.0, or 89.20.0.0 exactly (these are the affected versions)
-
Confirm DS8000 HMC modelVerify the system is specifically a DS8000 Management Console (HMC) by checking the product identifier in the HMC interface or using dscli command: 'dscli -hmc hmc_name -cmd lssys' to list system detailsAffected if The system is confirmed as IBM System Storage DS8000 with Management Console
-
Check HMC network exposureReview network configuration to determine if the HMC management interface (typically ports 443, 8443, or 22 for web/SSH) is accessible from untrusted networks. Check firewall rules, VLAN configuration, or use 'netstat -an | grep -E ':(443|8443|22)' on the HMC server to list listening interfacesAffected if The HMC management interface is bound to any IP address other than localhost or is accessible from network segments outside the trusted administrative network
-
Test for unauthenticated URL accessAttempt to access common HMC endpoints without credentials using a browser or curl command: 'curl -k https://hmc_host/' and observe if any pages return HTTP 200 without requiring login authenticationAffected if Any unpublished URLs or sensitive endpoints are accessible without authentication (note: the specific unpublished URLs are not disclosed in the CVE)
You are affected if your DS8000 HMC firmware version is exactly 88.50.0.0, 89.10.0.0, or 89.20.0.0 AND the HMC management interface is network-accessible to untrusted users.
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 IBM's security patch for this vulnerability (contact IBM support for fix availability). If patching is delayed, restrict network access to the HMC management interface using firewall rules or access controls.
- Consultation4.0 h
- Implementation6.0 h
- Testing4.0 h
- Review / QA2.0 h
An estimate, not a bill — we confirm scope with you before any work starts. Need it this week? Rush from $4,544.
Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2021-38929 — 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-2021-38929 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
Be the first to add a field note for this CVE — a mitigation you’ve verified, a version caveat, or a link to a working fix. Sign in above to contribute.
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