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Vulnerabilities

Vulnerability · CVE-2025-1991

IBM Informix Dynamic Server 12.10,14.10, and15.0 could allow a remote attacker to cause a denial of service due to an integer underflow when processing packets.

Published Jun 28, 2025 · catalog updated Aug 24, 2025 · IBM Informix Dynamic Server

Check this week

CVE-2025-1991 is not in CISA KEV. FIRST estimates a 44.00% chance of exploitation in the next 30 days. Check whether you run IBM Informix Dynamic Server.

Gaps on this record

  • No vendor fix or required action is stored. Compare the linked advisory before you change production.
Severity
High7.5
Known exploitation
Not in CISA/VulnCheck KEV
EPSS
44.00%
Remediation
Vendor / distro source
Affected products
vendor IBM Informix Dynamic Server 15.0

IBM Informix Dynamic Server 12.10,14.10, and15.0 could allow a remote attacker to cause a denial of service due to an integer underflow when processing packets.

Are you affected?

Enter the version you run. The result uses only the ranges stored on this record.

The check returns affected, not affected, or incomplete. It does not guess a version that is missing from the record.

  • vendor IBM Informix Dynamic Server 15.015.0

How to fix CVE-2025-1991

  • Recommended remediation

    A vendor or distribution source is linked. Check that advisory for patch availability; this catalog does not invent fix status.

  • Official advisories

What to do

Three questions, each answered from this record only. Confirm the vendor advisory before you patch.

Should you patch?

CVE-2025-1991 is not in CISA KEV. FIRST estimates a 44.00% chance of exploitation in the next 30 days. Check whether you run IBM Informix Dynamic Server.

Which versions are affected?

Compare what you have installed with IBM Informix Dynamic Server 15.0 15.0. Compare the installed version with the linked vendor advisory before you change production.

What should an analyst verify?

No weakness class is stored. EPSS 44.00%. There is no CISA KEV listing. No Exploit-DB or Metasploit reference is linked. Use the source links for the original advisory.

Code

The project this record applies to. Exploit listings stay in References.

No public source repository is identified for this product.

Timeline

Detection, updates, and resolution for this record.

  1. Jun 28, 2025 · EUVD

    Detected

    IBM Informix Dynamic Server 12.10,14.10, and15.0 could allow a remote attacker to cause a denial of service due to an integer underflow when processing packets.

  2. Aug 24, 2025 · EUVD

    Updated

    IBM Informix Dynamic Server 12.10,14.10, and15.0 could allow a remote attacker to cause a denial of service due to an integer underflow when processing packets.

Sources

  • EUVDVulnerability recordEUVD-2025-19451

    IBM Informix Dynamic Server 12.10,14.10, and15.0 could allow a remote attacker to cause a denial of service due to an integer underflow when processing packets.

    euvd.enisa.europa.eu

References

Freshness

Last verified in this catalog Aug 24, 2025. Significant claims (KEV, EPSS, CVSS, affected ranges) come from the source rows above — open the original publisher for the authoritative advisory.