7.5
HIGH CVSS 3.1
CVE-2025-1991
IBM Informix Dynamic Server Denial of Service Buffer Overflow
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.

INFO

Published Date :

June 28, 2025, 1:15 p.m.

Last Modified :

Aug. 14, 2025, 1:08 a.m.

Remotely Exploit :

Yes !
Affected Products

The following products are affected by CVE-2025-1991 vulnerability. Even if cvefeed.io is aware of the exact versions of the products that are affected, the information is not represented in the table below.

ID Vendor Product Action
1 Ibm informix_dynamic_server
CVSS Scores
The Common Vulnerability Scoring System is a standardized framework for assessing the severity of vulnerabilities in software and systems. We collect and displays CVSS scores from various sources for each CVE.
Score Version Severity Vector Exploitability Score Impact Score Source
CVSS 3.1 HIGH [email protected]
Solution
Update IBM Informix Dynamic Server to a fixed version to prevent denial of service.
  • Update IBM Informix Dynamic Server to a fixed version.
  • Apply vendor-provided patches for the affected versions.
References to Advisories, Solutions, and Tools

Here, you will find a curated list of external links that provide in-depth information, practical solutions, and valuable tools related to CVE-2025-1991.

URL Resource
https://www.ibm.com/support/pages/node/7238455 Vendor Advisory
CWE - Common Weakness Enumeration

While CVE identifies specific instances of vulnerabilities, CWE categorizes the common flaws or weaknesses that can lead to vulnerabilities. CVE-2025-1991 is associated with the following CWEs:

Common Attack Pattern Enumeration and Classification (CAPEC)

Common Attack Pattern Enumeration and Classification (CAPEC) stores attack patterns, which are descriptions of the common attributes and approaches employed by adversaries to exploit the CVE-2025-1991 weaknesses.

We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).

Results are limited to the first 15 repositories due to potential performance issues.

The following list is the news that have been mention CVE-2025-1991 vulnerability anywhere in the article.

The following table lists the changes that have been made to the CVE-2025-1991 vulnerability over time.

Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.

  • Initial Analysis by [email protected]

    Aug. 14, 2025

    Action Type Old Value New Value
    Added CPE Configuration OR *cpe:2.3:a:ibm:informix_dynamic_server:12.10:-:*:*:-:*:*:* *cpe:2.3:a:ibm:informix_dynamic_server:14.10:-:*:*:-:*:*:* *cpe:2.3:a:ibm:informix_dynamic_server:15.0:-:*:*:-:*:*:*
    Added Reference Type IBM Corporation: https://www.ibm.com/support/pages/node/7238455 Types: Vendor Advisory
  • New CVE Received by [email protected]

    Jun. 28, 2025

    Action Type Old Value New Value
    Added 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.
    Added CVSS V3.1 AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
    Added CWE CWE-191
    Added Reference https://www.ibm.com/support/pages/node/7238455
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days. Following chart shows the EPSS score history of the vulnerability.
Vulnerability Scoring Details
Base CVSS Score: 7.5
Attack Vector
Attack Complexity
Privileges Required
User Interaction
Scope
Confidentiality Impact
Integrity Impact
Availability Impact