IBM Db2 denial of service

published 2024-12-19 22 mo ago modified 2026-06-17 4 mo ago also EUVD-2023-34861

cvss: 5.3; version 3.1, CNA
cisa kev: Not listed; not in CISA's catalog
epss: 0.5%; EPSS 0.5% chance of exploitation in 30 days, percentile 41%
public exploits: 0; none known

IBM Db2 for Linux, UNIX and Windows (includes Db2 Connect Server) 10.5, 11.1, and 11.5 is vulnerable to denial of service with a specially crafted query.

CISA SSVC

Exploitation: none
Automatable: no
Technical impact: partial
Assessed: 22 mo ago (2024-12-19)

Exploit prediction

0.47% chance of exploitation in the next 30 days, higher than 41% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by	version	score	vector
CNA	3.1	5.3	CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H
NVD	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-770 Allocation of Resources Without Limits or Throttling

Technology feeds

IBM Db2 rss critical rss

References

ibm.com /support/pages/node/7010557
vendor-advisory

Sources

CVE List CVE-2023-30443
NVD CVE-2023-30443

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Summary