CVE-2025-36442: IBM Db2 for Linux, UNIX and Windows · CWE-943
Affects IBM Db2 for Linux, UNIX and WindowsSource CVE Database V5
Not known to be exploited · CVSS 6.5 Medium.
Data as of 26 Oct 2026, 10:12 UTC
- EPSS
- 0.4% chance of exploitation in 30 days – higher than 37% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:HExploitation evidence
Disclosed: evidence found.
CVE published 30 Jan 2026
Detectable: no evidence on record.
No public nuclei template indexed
Weaponised: no evidence on record.
No public exploit code indexed in Metasploit or Exploit-DB
Exploited in the wildExploited: no evidence on record.
Not in CISA KEV and no source reports exploitation
Observed by OffSeq MirageSeen by 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
| Product | Affected | Fixed in |
|---|---|---|
| IBMDb2 for Linux, UNIX and Windows | Affected
| Fixed in– |
CPE configurations (20)
cpe:2.3:a:ibm:db2:11.5.0:*:*:*:*:linux:*:*cpe:2.3:a:ibm:db2:11.5.0:*:*:*:*:unix:*:*cpe:2.3:a:ibm:db2:11.5.0:*:*:*:*:aix:*:*cpe:2.3:a:ibm:db2:11.5.0:*:*:*:*:windows:*:*cpe:2.3:a:ibm:db2:11.5.0:*:*:*:*:zos:*:*cpe:2.3:a:ibm:db2:11.5.9:*:*:*:*:linux:*:*
AI-suggested
- Monitor IBM’s official security advisories closely and apply patches or updates as soon as they become available to address CVE-2025-36442.
- Restrict database user privileges to the minimum necessary, especially limiting permissions to execute queries involving XML columns to trusted users only.
- Implement network segmentation and firewall rules to restrict access to IBM Db2 servers, allowing only authorized hosts and users to connect.
- Deploy database activity monitoring tools to detect unusual or malformed XML query patterns that could indicate exploitation attempts.
- Conduct regular security audits and vulnerability assessments focusing on database query handling and XML data processing.
- Prepare incident response plans to quickly recover from potential denial of service events, including database failover and backup restoration procedures.
- Educate database administrators and developers on secure coding and query construction practices to avoid injection or malformed data issues.
- Consider deploying Web Application Firewalls (WAFs) or database proxies that can filter or sanitize XML queries before they reach the database server.
Description
IBM Db2 for Linux, UNIX and Windows (includes Db2 Connect Server) 11.5.0 - 11.5.9 and 12.1.0 - 12.1.3 is vulnerable to a denial of service as the server may crash under certain conditions with a specially crafted query with XML columns.