ZeroDay Findings
Sign inSign up

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

Severity
Medium5.3
Known exploitation
Not in CISA/VulnCheck KEV
EPSS
39.0%
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.

Technical analysis

Mechanism and impact are interpreted from ingested advisories — not independent exploit research.

  • CWE classification

    No CWE identifiers stored yet.

  • Prerequisites and impact

    Follow the original vendor advisory for access prerequisites and impact. This catalog does not invent exploit conditions.

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 reads of the same public record: the decision, the versions on file, and the signals. Confirm the vendor advisory before you patch. This page does not publish exploit steps.

Executive

This is a public record, not a confirmed incident. CVE-2025-1000 is a medium issue in IBM Db2 for Linux, UNIX and Windows (CVSS 5.3). CISA does not currently list it as known exploited. Next step: Compare installed versions with the linked vendor advisory before changing production.

System administrator

Check whether IBM Db2 for Linux, UNIX and Windows is installed. Ranges on record: IBM Db2 for Linux, UNIX and Windows 11.5.0 ≤11.5.9 (11.5.0 ≤11.5.9). Compare installed versions with the linked vendor advisory before changing production.

Security analyst

CVSS 5.3. EPSS 39.0%. CISA does not currently list it as known exploited. Weaknesses: not classified. Sources: euvd. Exploit links, when listed below, point at the original publisher.

Related intelligence

  • Exploitation evidence

    Not listed as known exploited in CISA KEV. Not in CISA KEV or VulnCheck KEV.

  • Safe detection guidance

    Compare installed versions with the affected ranges below and verify the advisory from the original publisher. This site stores metadata and outbound links only; it does not ship exploit code or proof-of-concept payloads.

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.

Affected versions

Enter an installed version to get a verified affected / not-affected result against the ranges below.

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

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.