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VulnerabilityPublished

CVE-2026-6051: IBM Db2 · Uncontrolled Resource Consumption

Affects IBM Db2Source CVE Database V5

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Not known to be exploited · CVSS 5.5 Medium.

Data as of 30 Oct 2026, 11:52 UTC

CVSS 3.1 base score
5.5Medium
How severe the flaw is on the 0–10 CVSS scale.
EPSS
0.1% chance of exploitation in 30 days – higher than 7% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 27 May 2026

  2. Detectable: no evidence on record.

    No public nuclei template indexed

  3. Weaponized: 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 30 Oct 2026.

What to do

Affected software

ProductAffectedFixed in
IBMDb2Affected
  • >=11.5.0 <=11.5.9
  • >=12.1.0 <=12.1.4
Fixed in–
Mavencom.ibm.db2/db2pkg:maven/com.ibm.db2/db2Other threatsAffected
  • =11.5.0
  • =12.1.0
Fixed in–

CPE configurations (4)

  • cpe:2.3:a:ibm:db2:11.5.0:*:*:*:*:*:*:*
  • cpe:2.3:a:ibm:db2:11.5.9:*:*:*:*:*:*:*
  • cpe:2.3:a:ibm:db2:12.1.0:*:*:*:*:*:*:*
  • cpe:2.3:a:ibm:db2:12.1.4:*:*:*:*:*:*:*

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

AI-suggested

Until a fix is available, consider limiting access to trusted users and monitoring query resource usage to mitigate potential denial of service conditions.

Description

IBM Db2 11.5.0 through 11.5.9, and 12.1.0 through 12.1.4 is vulnerable to a denial of service when executing a specially crafted query with a small statement heap.

References

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