Resource exhaustion in IBM Db2
CVE-2025-1000
IBM Db2 for Linux, UNIX and Windows (includes DB2 Connect Server) 11.5.0 through 11.5.9 and 12.1.0 through 12.1.1 could allow an authenticated user to cause a denial of service when connecting to a z/OS database due to improper handling of automatic client rerouting.
EPSS: 0.003 (25.9th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 5.3 (Medium). Vector: CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H.
Affected products
- Ibm Db2
- Ibm Db2 For Linux, Unix And Windows — versions 11.5.0, 12.1.0
Weakness classification (CWE)
Public proof-of-concept exploits
References
- psirt@us.ibm.com (vendor-advisory, patch, Vendor Advisory)
- af854a3a-2127-422b-91ae-364da2661108
Frequently asked questions
- What is CVE-2025-1000?
- CVE-2025-1000 is a medium-severity vulnerability in IBM Db2, classified under Allocation of Resources Without Limits or Throttling. CVSS score: 5.3/10. Published 2025-05-05.
- How severe is CVE-2025-1000?
- Medium severity. CVSS v3 base score is 5.3 out of 10.
- Is CVE-2025-1000 known to be exploited?
- 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.