Informix Dynamic ServerApplication · Ibm

CVE-2024-49342

HIGH · 7.5 CVSS v3.1 Published 2025-07-28
Mitigation only
No fix yet — a mitigation exists. There is no fixed release. A documented workaround reduces exposure in the meantime.
See remediation →
84/100
Remediation priority · High
Remotely reachable No privileges 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 Informix Dynamic Server 12.10 and 14.10 uses an inadequate account lockout setting that could allow a remote attacker to brute force account credentials.

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 Informix Dynamic Server versions 12.10 and 14.10 contain a weak account lockout mechanism (or lack thereof) that permits unlimited login attempts, enabling remote attackers to conduct brute force attacks against user credentials.

MitigationImplement and enforce a proper account lockout policy by configuring Informix's authentication settings to lock accounts after a reasonable number of failed login attempts (typically 3-5) for a defined duration.

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
Informix Dynamic ServerApplication
Affected:= 12.10= 14.10

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
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 checks

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

  1. Identify Informix version
    Run 'onstat -' or check Informix version via 'onmode -version' or query the sysmaster database for version information
    Affected if Installed version is 12.10 or 14.10
  2. Check authentication configuration file
    Locate and inspect the Informix configuration file (onconfig or sqlhosts) for authentication-related settings, specifically looking for account lockout, password policy, or login attempt limits
    Affected if No account lockout or login attempt limits are configured, or configuration is missing entirely
  3. Verify account lockout policy settings
    Query Informix's authentication settings via 'onmode -secure' or check the $INFORMIXDIR/etc/$ONCONFIG file for CONNECTION_AUTHENTICATION, USEOSTIME, or similar security parameters
    Affected if The authentication configuration does not enforce account lockout after failed login attempts (typically should lock after 3-5 attempts)
  4. Inspect security audit logs
    Review Informix logs (online.log orMessage Log) for repeated failed login attempts against user accounts
    Affected if Logs show multiple failed login attempts without any account being locked out, indicating unlimited attempts are allowed

You are affected if you run Informix Dynamic Server version 12.10 or 14.10 and your authentication configuration lacks enforced account lockout after failed login attempts, allowing unlimited brute force attempts.

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.

From vendor data
Mitigation available No clean upgrade yet — mitigate in the meantime
Mitigation

Implement and enforce a proper account lockout policy by configuring Informix's authentication settings to lock accounts after a reasonable number of failed login attempts (typically 3-5) for a defined duration.

Fix this in Informix Dynamic Server Scoped from the published advisory
  • Consultation3.0 h
  • Implementation2.0 h
  • Testing4.0 h
  • Review / QA2.0 h
11.0 hours of engineering $1,920
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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-2024-49342 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
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