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ConcertApplication · Ibm

CVE-2025-12771

HIGH · 7.8 CVSS v3.1 Published 2025-12-26
Fix available
A fix is available. Upgrade to 2.2.0 or later.
See remediation →
80/100
Remediation priority · High
Zero-click

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 · unedited
IBM Concert 1.0.0 through 2.1.0 is vulnerable to a stack-based buffer overflow, caused by improper bounds checking. A local user could overflow the buffer and execute arbitrary code on the system.

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 confidence

IBM Concert versions 1.0.0 through 2.1.0 contains a stack-based buffer overflow vulnerability caused by improper bounds checking during input handling. A local authenticated user can overflow a stack-allocated buffer and achieve arbitrary code execution with the privileges of the affected process.

MitigationApply the vendor-supplied patch when available; until then, restrict local access to trusted users only and monitor for suspicious process behavior. Consider deploying the application with least-privilege service accounts.

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
ConcertApplication
Affected:>= 1.0.0, < 2.2.0

CVSS 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
Low
User interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/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 checks

Work through these to decide whether this CVE applies to you.

  1. Identify if IBM Concert is installed
    Search for IBM Concert installation directories or check system inventory/scanned software lists. Common paths may include /opt/ibm/concert, /usr/local/concert, or program files under Windows. Use 'whereis concert' on Linux or check Add/Remove Programs on Windows.
    Affected if IBM Concert software is found on the system
  2. Determine the installed version of IBM Concert
    Run the IBM Concert command-line tool with version flag, such as 'concert --version' or 'ibm-concert version', or check the installation manifest/package metadata. Compare the version number against the affected range.
    Affected if Installed version is 1.0.0 through 1.x.x or 2.0.0 through 2.1.x (any version >= 1.0.0 and < 2.2.0)
  3. Verify local user authentication is enabled
    Check IBM Concert configuration files for authentication settings. Look for local user database, PAM configuration, or built-in auth module settings in concert.conf or similar config files in the installation directory.
    Affected if Local/bUILT-IN authentication is configured and enabled for IBM Concert
  4. Confirm the process runs with elevated privileges
    Inspect the service account or process ownership under which IBM Concert runs. Check systemd service files, Windows service configuration, or process list with 'ps aux | grep concert' to see the effective user ID.
    Affected if IBM Concert process runs with root, administrator, or elevated SYSTEM privileges rather than a low-privilege service account

A user is affected if IBM Concert version 1.0.0 through less than 2.2.0 is installed with local authentication enabled and running with elevated privileges.

Generated from the published advisory. Verify against your own configuration.

Check your environment

Paste your version and any relevant configuration and it will be compared against the affected criteria above. Do not include secrets or credentials.

AI-assisted, checked against the advisory. Informational, not a guarantee.

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 · scoped
Upgrade available Upgrade to 2.2.0 or later
Fixed in 2.2.0
Interim mitigation

Apply the vendor-supplied patch when available; until then, restrict local access to trusted users only and monitor for suspicious process behavior. Consider deploying the application with least-privilege service accounts.

Recommended fix High confidence

IBM Concert 2.2.0 or later

  1. Verify current IBM Concert version using the product's version command or administration interface
  2. Plan upgrade during a maintenance window to minimize business impact
  3. Upgrade IBM Concert to version 2.2.0 or later
  4. After upgrade, verify the new version is running: 2.2.0 or higher
  5. Test critical Concert functionalities to ensure the upgrade did not introduce issues

Generated from the published advisory — verify against the referenced sources before acting.

Fix this in Concert Scoped from the published advisory
  • Consultation3.0 h
  • Implementation6.0 h
  • Testing4.0 h
  • Review / QA2.0 h
15.0 hours of engineering $2,640
Get the upgrade done

An estimate, not a bill — we confirm scope with you before any work starts. Need it this week? Rush from $4,224.

Scan for this in your stack

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dbcve dependency scanner

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References Go to the primary sourcePrimary sources — vendor advisories, patches and trackers. Where our summary and a reference disagree, the reference wins.

Primary sources

Practitioner notes

Contributed

Peer-ranked notes from engineers who’ve handled CVE-2025-12771 in production — separate from our analysis above.

No notes yet

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What this is

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.

What belongs here
  • 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