CVE-2025-1000: IBM Db2 for Linux, UNIX and Windows · Unthrottled Resource Allocation
Affects IBM Db2 for Linux, UNIX and WindowsSource GCVE Database
Not known to be exploited · CVSS 5.3 Medium.
Data as of 30 Oct 2026, 00:08 UTC
Thin evidence
One scorer or none| CNA (ibm) | CVSS 3.1 | 5.3 |
|---|
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:HExploitation evidence
Disclosed: evidence found.
CVE published 5 May 2025
Detectable: no evidence on record.
No public nuclei template indexed
Weaponized: 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 29 Oct 2026.
What to do
Affected software
| Product | Affected | Fixed in |
|---|---|---|
| IBM Db2 for Linux, UNIX and Windows | Affected
| Fixed in– |
AI-suggested
Until a fix is available, limit authenticated user access to trusted users and monitor for unusual connection patterns related to automatic client rerouting.
Description
CVE-2025-1000 is a vulnerability in IBM Db2 for Linux, UNIX and Windows versions 11.5.0 through 11.5.9 and 12.1.0 through 12.1.1. It involves improper handling of automatic client rerouting when connecting to a z/OS database, which could allow an authenticated user to cause a denial of service (DoS). The vulnerability does not impact confidentiality or integrity but affects availability.