CVE-2025-1991

IBM Informix Dynamic Server denial of service

Description

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.

Remediation

Solution:

  • Update to IBM Informix Dynamic Server 14.10.xC11W2. Fix is available on IBM Fix Central - Select Fixes - Informix Server. Follow the instructions for Database server upgrades in the Informix Servers documentation. Update to IBM Informix Dynamic Server 12.10.xC16W2. Fix is available on IBM Fix Central - Select Fixes - Informix Server. Follow the instructions for Database server upgrades in the Informix Servers documentation.

Category

7.5
CVSS
Severity: High
CVSS 3.1 •
EPSS 0.09%
Vendor Advisory ibm.com
Affected: IBM Informix Dynamic Server
Published at:
Updated at:

References

Link Tags
https://www.ibm.com/support/pages/node/7238455 vendor advisory

Frequently Asked Questions

What is the severity of CVE-2025-1991?
CVE-2025-1991 has been scored as a high severity vulnerability.
How to fix CVE-2025-1991?
To fix CVE-2025-1991: Update to IBM Informix Dynamic Server 14.10.xC11W2. Fix is available on IBM Fix Central - Select Fixes - Informix Server. Follow the instructions for Database server upgrades in the Informix Servers documentation. Update to IBM Informix Dynamic Server 12.10.xC16W2. Fix is available on IBM Fix Central - Select Fixes - Informix Server. Follow the instructions for Database server upgrades in the Informix Servers documentation.
Is CVE-2025-1991 being actively exploited in the wild?
As for now, there are no information to confirm that CVE-2025-1991 is being actively exploited. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2025-1991?
CVE-2025-1991 affects IBM Informix Dynamic Server.
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