CVE-2025-13044
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 Concert 1.0.0 through 2.2.0 creates temporary files with predictable names, which allows local users to overwrite arbitrary files via a symlink attack.
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 Concert versions 1.0.0 through 2.2.0 creates temporary files with predictable names in an insecure manner, allowing a local user to pre-create a symlink with the same predictable filename. When the application writes to what it believes is its temp file, it actually writes through the symlink to an arbitrary target file on the system, enabling local privilege escalation or arbitrary file overwrite.
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>= 1.0.0, <= 2.2.0CVSS 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
- Local
- Complexity
- Low
- Privileges
- None
- User interaction
- None
- Scope
- Unchanged
- Confidentiality
- None
- Integrity
- High
- Availability
- None
CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:H/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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Verify IBM Concert installed versionRun 'ibmconcert --version' or check the package manager for the installed ibm-concert package versionAffected if Version is 1.0.0 through 2.2.0 inclusive
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Identify temporary file creation behaviorReview application logs, source code, or runtime behavior to locate where and how temporary files are created during operationAffected if Temporary files are created in world-writable directories with predictable naming patterns
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Check temp directory permissions and contentsInspect the system temp directory (commonly /tmp) for any existing IBM Concert-related files and verify directory permissions allow symlink creation by other usersAffected if Temp directory permits symlink creation by unprivileged users and contains files with predictable names matching IBM Concert patterns
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Monitor for predictable temporary filename patternsObserve application runtime or analyze any available logs to identify if temporary filenames follow sequential or timestamp-based patterns rather than cryptographically random namesAffected if Temporary filenames can be predicted before creation (e.g., 'tempfile001', 'concert_temp_20250101')
A user is affected if IBM Concert version 1.0.0-2.2.0 is installed and the application creates temporary files with predictable names in a location where unprivileged users can create symlinks.
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.
dbcve · scopedReplace predictable temp file creation with secure methods such as mkstemp() or secure temp directories with proper permissions to prevent symlink attacks.
IBM Concert 2.3.0 or later
- Identify the currently installed IBM Concert version using your package manager or application metadata
- Review your system's current configuration and any custom integrations that may be affected by an upgrade
- Plan a maintenance window to perform the upgrade
- Upgrade IBM Concert to version 2.3.0 or later to remediate the predictable temporary file vulnerability
- Verify the upgrade was successful and the application functions normally
- Monitor application logs for any errors following the upgrade
Generated from the published advisory — verify against the referenced sources before acting.
- Consultation3.0 h
- Implementation6.0 h
- Testing3.0 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 $3,984.
Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2025-13044 — 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-2025-13044 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