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VulnerabilityPublished Updated

CVE-2025-3050: IBM Db2 for Linux, UNIX and Windows · Unthrottled Resource Allocation

Affects IBM Db2 for Linux, UNIX and WindowsSource CVE Database V5

0

Not known to be exploited · CVSS 5.3 Medium.

Data as of 26 Oct 2026, 14:05 UTC

CVSS 3.1 base score
5.3Medium
How severe the flaw is on the 0–10 CVSS scale.
EPSS
0.3% chance of exploitation in 30 days – higher than 33% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 29 May 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 26 Oct 2026.

What to do

Affected software

ProductAffectedFixed in
Red Hatredhat/db2pkg:rpm/redhat/db2Other threatsAffected
  • =11.5.0
  • =12.1.0
Fixed in–

Check your own hosts for these packages with threat-finder (opens in a new tab), our free open-source scanner.

AI-suggested

To mitigate CVE-2025-3050, European organizations should take the following specific actions: 1) Immediately review and restrict access controls to limit the number of users with authentication privileges to the Db2 Q replication feature, minimizing the attack surface. 2) Monitor CPU usage patterns on Db2 servers closely, especially during replication operations, to detect abnormal spikes that may indicate exploitation attempts. 3) Implement resource governance policies at the operating system or virtualization layer to enforce CPU usage limits on Db2 processes, preventing any single user or process from exhausting resources. 4) Apply network segmentation and firewall rules to restrict access to Db2 replication ports only to trusted hosts and administrators. 5) Stay vigilant for IBM security advisories and apply patches or updates as soon as they become available. 6) Conduct regular security audits and penetration testing focused on database replication components to identify potential exploitation vectors. 7) Prepare incident response plans that include steps for rapid recovery from DoS conditions affecting database availability. These measures go beyond generic advice by focusing on access control tightening, resource governance, and proactive monitoring tailored to the specifics of this vulnerability.

Description

IBM Db2 for Linux, UNIX and Windows (includes DB2 Connect Server) 11.5.0 through 11.5.9 and 12.1.0 through 12.1.1 could allow an authenticated user to cause a denial of service when using Q replication due to the improper allocation of CPU resources.

References

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