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CVE-2025-33131VulnerabilityPublished

CVE-2025-33131: IBM DB2 High Performance Unload · Classic Buffer Overflow

Affects IBM DB2 High Performance UnloadSource CVE Database V5

0

Not known to be exploited · CVSS 6.5 Medium.

Data as of 25 Oct 2026, 19:02 UTC

CVSS 3.1 base score
6.5Medium
How severe the flaw is on the 0–10 CVSS scale.
EPSS
0.3% chance of exploitation in 30 days – higher than 23% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 27 Oct 2025

  2. Detectable: no evidence on record.

    No public nuclei template indexed

  3. Weaponised: no evidence on record.

    No public exploit code indexed in Metasploit or Exploit-DB

  4. Exploited in the wild: no evidence on record.

    Not in CISA KEV and no source reports exploitation

  5. Observed by OffSeq Mirage: no evidence on record.

    No attack traffic recorded by OffSeq Mirage sensors

A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 2026-10-25.

What to do

Affected software

ProductAffectedFixed in
IBM DB2 High Performance UnloadAffected
  • =6.1.0.3
  • =5.1.0.1
  • =6.1.0.2
  • =6.5
  • =6.5.0.0
  • =6.1.0.1
  • =6.1
  • =5.1
Fixed in–

AI-suggested

1. Restrict network access to IBM DB2 High Performance Unload services using firewalls and network segmentation to limit exposure to trusted users only. 2. Enforce strong authentication and credential management policies to reduce the risk of unauthorized access by insiders or compromised accounts. 3. Monitor system and application logs for unusual crashes or service interruptions that may indicate exploitation attempts. 4. Implement robust backup and recovery procedures to minimize operational impact from potential denial of service events. 5. Engage with IBM support and subscribe to security advisories to obtain and apply patches or updates as soon as they become available. 6. Conduct regular security assessments and penetration testing focused on database components to identify and remediate similar vulnerabilities proactively. 7. Consider deploying runtime application self-protection (RASP) or behavior-based anomaly detection tools to detect and block buffer overflow attempts in real time.

Description

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 to a buffer being overwritten when it is allocated on the stack.

References

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