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PatchSiren cyber security CVE debrief

CVE-2026-105466 IBM CVE debrief

IBM Db2 is vulnerable to a denial of service when inserting into a table with XML columns under specific conditions. This affects IBM Db2 11.5.0 through 11.5.9, and 12.1.0 through 12.1.5. The vulnerability can cause significant disruption to service, and defenders should prioritize verifying exposure and assessing potential impact on systems using these versions. It is essential to review the supplied official advisory or CVE record to validate affected scope, severity, and vendor guidance. Affected product deployments should be identified in managed environments, and owners should be assigned for follow-up. Compensating controls for exposed systems should be reviewed while remedi

Vendor
IBM
Product
Db2
CVSS
MEDIUM 6.5
CISA KEV
Not listed in stored evidence
Original CVE published
2026-10-12
Original CVE updated
2026-10-12
Advisory published
2026-10-12
Advisory updated
2026-10-12

Who should care

Defenders responsible for systems using IBM Db2 versions 11.5.0 through 11.5.9 and 12.1.0 through 12.1.5 should assess potential exposure and impact.

Why it matters

Defenders should prioritize verifying exposure and assessing potential impact on systems using IBM Db2 versions 11.5.0 through 11.5.9 and 12.1.0 through 12.1.5 due to a denial of service vulnerability.

  • Potential denial of service on affected systems
  • Need to verify exposure and assess potential impact
  • Priority on applying patches or updates

Technical summary

IBM Db2 is vulnerable to a denial of service when inserting into a table with XML columns under specific conditions. This affects IBM Db2 11.5.0 through 11.5.9, and 12.1.0 through 12.1.5. The vulnerability is caused by improper handling of XML data, which can lead to a denial of service. Defenders should prioritize verifying exposure and assessing potential impact on systems using these versions. The vulnerability can be mitigated by applying patches or updates provided by IBM. It is essential to review the supplied official advisory or CVE record to validate

Defensive priority

Defenders should prioritize verifying exposure and assessing potential impact on systems using IBM Db2 versions 11.5.0 through 11.5.9 and 12.1.0 through 12.1.5.

Recommended defensive actions

  • Verify system configurations and inventory to identify potential exposure
  • Assess potential impact on systems using IBM Db2 versions 11.5.0 through 11.5.9 and 12.1.0 through 12.1.5
  • Consider applying patches or updates provided by IBM

Evidence notes

The CVE record and source item provide details on the vulnerability. However, additional information on potential exploitation or specific attack scenarios is limited.

Sources and references

Verified primary and authoritative sources

  • CVE-2026-105466 CVE Program record

    Publisher, destination, and source semantics verified

    URL: https://www.cve.org/CVERecord?id=CVE-2026-105466

    CVE Program - Official CVE Program record with source-provided CVE metadata.

  • CVE-2026-105466 NVD vulnerability detail

    Publisher, destination, and source semantics verified

    URL: https://nvd.nist.gov/vuln/detail/CVE-2026-105466

    NIST National Vulnerability Database - Official NIST NVD detail page and source-specific vulnerability assessment.

Supplemental references

Methodology and review provenance

AI-assisted synthesis based on stored public vulnerability evidence. System validation, approval state, and publication status do not by themselves establish human review of this revision. PatchSiren helps prioritize defensive review and does not prove exposure or remediation on any system.