IBM Informix Dynamic Server 12.10/14.10/15.0 Remote DoS via Integer Underflow
CVE-2025-1991 Published on June 28, 2025
IBM Informix Dynamic Server denial of service
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.
Vulnerability Analysis
CVE-2025-1991 can be exploited with network access, and does not require authorization privileges or user interaction. This vulnerability is considered to have a low attack complexity. The potential impact of an exploit of this vulnerability is considered to have no impact on confidentiality and integrity, and a high impact on availability.
Weakness Type
What is an Integer underflow Vulnerability?
The product subtracts one value from another, such that the result is less than the minimum allowable integer value, which produces a value that is not equal to the correct result. This can happen in signed and unsigned cases.
CVE-2025-1991 has been classified to as an Integer underflow vulnerability or weakness.
Products Associated with CVE-2025-1991
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Affected Versions
IBM Informix Dynamic Server:- Version 12.10 is affected.
- Version 14.10 is affected.
- Version 15.0 is affected.
Exploit Probability
EPSS (Exploit Prediction Scoring System) scores estimate the probability that a vulnerability will be exploited in the wild within the next 30 days. The percentile shows you how this score compares to all other vulnerabilities.