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Vulnerabilities

Vulnerability · 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 whe

Published May 5, 2025 · catalog updated Nov 3, 2025 · IBM Db2 for Linux, UNIX and Windows

Check this week

CVE-2025-1000 is not in CISA KEV. FIRST estimates a 39.00% chance of exploitation in the next 30 days. Check whether you run IBM Db2 for Linux, UNIX and Windows.

Severity
Medium5.3
Known exploitation
Not in CISA/VulnCheck KEV
EPSS
39.00%
Remediation
Vendor / distro source
Affected products
vendor IBM Db2 for Linux, UNIX and Windows 11.5.0 ≤11.5.9

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.

Are you affected?

Enter the version you run. The result uses only the ranges stored on this record.

The check returns affected, not affected, or incomplete. It does not guess a version that is missing from the record.

  • vendor IBM Db2 for Linux, UNIX and Windows 11.5.0 ≤11.5.911.5.0 ≤11.5.9

How to fix CVE-2025-1000

  • Recommended remediation

    A vendor or distribution source is linked. Check that advisory for patch availability; this catalog does not invent fix status.

  • Official advisories

What to do

Three questions, each answered from this record only. Confirm the vendor advisory before you patch.

Should you patch?

CVE-2025-1000 is not in CISA KEV. FIRST estimates a 39.00% chance of exploitation in the next 30 days. Check whether you run IBM Db2 for Linux, UNIX and Windows.

Which versions are affected?

Compare what you have installed with IBM Db2 for Linux, UNIX and Windows 11.5.0 ≤11.5.9 11.5.0 ≤11.5.9. Compare the installed version with the linked vendor advisory before you change production.

What should an analyst verify?

No weakness class is stored. EPSS 39.00%. There is no CISA KEV listing. No Exploit-DB or Metasploit reference is linked. Use the source links for the original advisory.

Technology hubs

Windows security

Code

The project this record applies to. Exploit listings stay in References.

No public source repository is identified for this product.

Timeline

Detection, updates, and resolution for this record.

  1. May 5, 2025 · EUVD

    Detected

    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.

  2. Nov 3, 2025 · EUVD

    Updated

    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.

Sources

  • EUVDVulnerability recordEUVD-2025-13427

    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.

    euvd.enisa.europa.eu

References

Freshness

Last verified in this catalog Oct 17, 2026. Significant claims (KEV, EPSS, CVSS, affected ranges) come from the source rows above — open the original publisher for the authoritative advisory.