IBM DB2 Merge Backup (12.1.0.0) Stack Buffer Overwrite Crash
CVE-2025-33130 Published on February 17, 2026
Fixes to common vulnerabilities found in IBM Db2 Merge Backup for Linux, UNIX and Windows
IBM DB2 Merge Backup for Linux, UNIX and Windows 12.1.0.0 could allow an authenticated user to cause the program to crash due to a buffer being overwritten when it is allocated on the stack.
Vulnerability Analysis
CVE-2025-33130 is exploitable with network access, and requires small amount of user privileges. 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 a Classic Buffer Overflow Vulnerability?
The program copies an input buffer to an output buffer without verifying that the size of the input buffer is less than the size of the output buffer, leading to a buffer overflow. A buffer overflow condition exists when a program attempts to put more data in a buffer than it can hold, or when a program attempts to put data in a memory area outside of the boundaries of a buffer. The simplest type of error, and the most common cause of buffer overflows, is the "classic" case in which the program copies the buffer without restricting how much is copied. Other variants exist, but the existence of a classic overflow strongly suggests that the programmer is not considering even the most basic of security protections.
CVE-2025-33130 has been classified to as a Classic Buffer Overflow vulnerability or weakness.
Products Associated with CVE-2025-33130
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Affected Versions
IBM DB2 Merge Backup for Linux, UNIX and Windows:- Version 12.1.0.0, <= 2.1.0 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.