Db2Application · Ibm
CVE-2025-1493
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 for Linux, UNIX and Windows (includes DB2 Connect Server) 12.1.0 through 12.1.1 could allow an authenticated user to cause a denial of service due to concurrent execution of shared resources.
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 confidenceIBM Db2 versions 12.1.0 through 12.1.1 contain a race condition vulnerability where authenticated users can cause denial of service via concurrent execution of shared resources. This is a classic time-of-check-time-of-use (TOCTOU) issue allowing manipulation of shared state during concurrent operations.
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
Db2Application
>= 12.1.0, <= 12.1.1CVSS 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
- High
- Privileges
- Low
- User interaction
- None
- Scope
- Unchanged
- Confidentiality
- None
- Integrity
- None
- Availability
- High
CVSS:3.1/AV:N/AC:H/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 the installed IBM Db2 versionRun 'db2level' from a Db2 instance owner account to retrieve the exact version and build levelAffected if The displayed version is 12.1.0 or 12.1.1 (including any subversions within these releases)
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Confirm the exact version rangeCheck if the installed version falls within the 12.1.0 through 12.1.1 range by examining the full version string from the version command outputAffected if The version is greater than or equal to 12.1.0 and less than or equal to 12.1.1
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Verify concurrent connection capabilityRun 'LIST APPLICATIONS' or query SYSCAT.APPLICATIONS to observe if multiple authenticated user connections can exist simultaneouslyAffected if The database allows multiple authenticated users to maintain concurrent connections, which is the typical operational mode
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Check for workload management configurationExamine Db2 workload management settings using GET WORKLOAD CONFIGURATION or inspect if concurrent request handling is enabledAffected if Concurrent request handling is enabled, allowing multiple authenticated users to execute operations at the same time
If the installed IBM Db2 version is 12.1.0 or 12.1.1 and the system supports concurrent authenticated user sessions, the environment is affected by this vulnerability
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 or upgrade to a fixed version beyond 12.1.1. Limit database user privileges to reduce attack surface until patching is complete.
Fix this in Db2
Scoped from the published advisory
- Consultation6.0 h
- Implementation8.0 h
- Testing12.0 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 $8,256.
Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2025-1493 — 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-2025-1493 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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