CVE-2025-33132
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 DB2 High Performance Unload 6.1.0.3, 5.1.0.1, 6.1.0.2, 6.5, 6.5.0.0 IF1, 6.1.0.1, 6.1, and 5.1 could allow an authenticated user to cause the program to crash due to the incorrect calculation of the size of the data that is being pointed to.
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 DB2 High Performance Unload contains a flaw where an authenticated user can cause a program crash due to incorrect size calculation of data being pointed to. This appears to be a buffer size miscalculation vulnerability that leads to memory corruption and denial of service when processing certain data structures.
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>= 5.1.0.0, <= 6.1.0.0= 6.1.0.1= 6.1.0.2= 6.1.0.3= 6.5.0.0CVSS 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
- Low
- User interaction
- None
- Scope
- Unchanged
- Confidentiality
- None
- Integrity
- None
- Availability
- High
CVSS:3.1/AV:N/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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Confirm IBM DB2 High Performance Unload is installedCheck for the presence of the db2hpu executable or the product installation directory. On Linux/Unix, look in /opt/ibm or the installation path; on Windows, check Program Files. Query the installed products using 'db2pd -products' or 'db2licm -l' if DB2 is present.Affected if The product IBM DB2 High Performance Unload is present on the system
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Retrieve the installed version of DB2 High Performance UnloadRun the command 'db2hpu -version' or 'db2hpu -help' from the installation directory. Alternatively, check the version string in the product banner when invoking the db2hpu utility. Check the file metadata of the db2hpu binary for version information.Affected if The version cannot be determined or the product is not found
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Compare installed version against affected rangesMatch the retrieved version against: 5.1.0.0 <= version <= 6.1.0.0, or version equals 6.1.0.1, 6.1.0.2, 6.1.0.3, or 6.5.0.0. Note that version 6.2.x, 6.3.x, 6.4.x and versions above 6.5.0.0 are not listed as affected.Affected if The installed version falls within 5.1.0.0 to 6.1.0.0 inclusive, or is exactly 6.1.0.1, 6.1.0.2, 6.1.0.3, or 6.5.0.0
The environment is affected if IBM DB2 High Performance Unload is installed AND its version matches one of the affected versions listed in the CVE (5.1.0.0 through 6.1.0.0, or specifically 6.1.0.1, 6.1.0.2, 6.1.0.3, or 6.5.0.0).
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 vendor patches or upgrade to the fixed versions of DB2 High Performance Unload. Since authentication is required for exploitation, also review and restrict user access privileges to the minimum necessary.
- Consultation2.0 h
- Implementation4.0 h
- Testing4.0 h
- Review / QA2.0 h
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Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2025-33132 — 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-2025-33132 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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