High severity · published May 27, 2026
CVE-2026-6051
IBM® Db2® is vulnerable to a denial of service when executing a specially crafted query with a small statement heap
7.5
CVSS
0.2%
EPSS
No
On KEV
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.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
None
Integrity
None
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.2% · higher than 7% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
DB
Db2 · IBM
11.5.0 through 11.5.9; 12.1.0 through 12.1.4 · source: vendor, NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-6051
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-6051
Vendor Advisory
https://www.ibm.com/support/pages/node/7273558
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