IBM Db2 Denial of Service

published 2026-01-30 9 mo ago modified 2026-06-17 4 mo ago also EUVD-2025-206550

cvss: 6.5; version 3.1, CNA
cisa kev: Not listed; not in CISA's catalog
epss: 0.4%; EPSS 0.4% chance of exploitation in 30 days, percentile 33%
public exploits: 0; none known

IBM Db2 for Linux, UNIX and Windows (includes Db2 Connect Server) 11.5.0 - 11.5.9 is vulnerable to a denial of service as the server may crash when an authenticated user creates a specially crafted query.

Patch / fix

links 1

ibm.com/support/pages/node/7257518 advisory

CISA SSVC

Exploitation: none
Automatable: no
Technical impact: partial
Assessed: 9 mo ago (2026-02-02)

Exploit prediction

0.39% chance of exploitation in the next 30 days, higher than 33% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by	version	score	vector
CNA	3.1	6.5	CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Affected products

IBM Db2 for Linux, UNIX and Windows

Classification

Weakness

CWE-789 Memory Allocation with Excessive Size Value
CWE-770 Allocation of Resources Without Limits or Throttling

Technology feeds

IBM Db2 rss critical rss

References

ibm.com /support/pages/node/7257518
vendor-advisory, patch

Sources

CVE List CVE-2025-2668
NVD CVE-2025-2668

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.

Summary