IBM DB2 HP Unload <=6.5 CRASH via OOB Write (auth.)
CVE-2025-33133 Published on October 27, 2025
Fixes to common vulnerabilities found in IBM Db2 High Performance Unload
IBM DB2 High Performance Unload 6.1.0.3, 5.1.0.1, 6.1.0.2, 6.5, 6.5.0.0 IF1, 6.1.0.1, 6.1, and 5.1 could allow an authenticated user to cause the program to crash due an out of bounds write.
Vulnerability Analysis
CVE-2025-33133 can be exploited 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 Memory Corruption Vulnerability?
The software writes data past the end, or before the beginning, of the intended buffer. Typically, this can result in corruption of data, a crash, or code execution. The software may modify an index or perform pointer arithmetic that references a memory location that is outside of the boundaries of the buffer. A subsequent write operation then produces undefined or unexpected results.
CVE-2025-33133 has been classified to as a Memory Corruption vulnerability or weakness.
Products Associated with CVE-2025-33133
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Affected Versions
IBM DB2 High Performance Unload:- Version 6.1.0.3 is affected.
- Version 5.1.0.1 is affected.
- Version 6.1.0.2 is affected.
- Version 6.5 is affected.
- Version 6.5.0.0 IF1 is affected.
- Version 6.1.0.1 is affected.
- Version 6.1 is affected.
- Version 5.1 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.