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CVE-2026-86087 IBM CVE debrief

IBM Db2 vulnerability CVE-2026-86087 allows authenticated users to write arbitrary files, posing a medium-severity risk. Db2 administrators and security teams must assess exposure, verify system configurations, and apply patches to prevent potential data integrity impacts. The vulnerability affects IBM Db2 11.5.0 through 11.5.9 and 12.1.0 through 12.1.5. Limited information is available, so further verification is required to determine the full scope. Affected users should review and apply IBM Db2 patches, verify system configurations and user access, and monitor system logs for suspicious activity.

Vendor
IBM
Product
Db2
CVSS
MEDIUM 4.3
CISA KEV
Not listed in stored evidence
Original CVE published
2026-09-10
Original CVE updated
2026-09-11
Advisory published
2026-09-10
Advisory updated
2026-09-11

Who should care

Db2 administrators, security teams, and IT personnel responsible for IBM Db2 deployments should assess exposure, verify system configurations, and apply patches as needed. They should also monitor system logs for suspicious activity and review compensating controls for exposed systems while remediation is scheduled and verified. Affected operators, platforms, and vulnerability management teams must prioritize patch  

Why it matters

CVE-2026-86087 is a medium-severity vulnerability in IBM Db2 that allows authenticated users to write arbitrary files on the system. Db2 administrators and security teams should assess exposure, verify system configurations, and apply patches as needed to prevent potential data integrity impacts.

  • Potential data integrity impact
  • Need to verify system configurations and user access
  • Possible exploitation by authenticated users

Technical summary

IBM Db2 11.5.0 through 11.5.9 and 12.1.0 through 12.1.5 are vulnerable to a specially crafted request that allows authenticated users to write arbitrary files on the system. This medium-severity vulnerability requires immediate attention. Db2 administrators and security teams should assess exposure, verify system configurations, and apply patches as needed to prevent potential data integrity impacts.

Defensive priority

Medium-priority vulnerability requiring immediate attention

Recommended defensive actions

  • Review and apply IBM Db2 patches
  • Verify system configurations and user access
  • Monitor system logs for suspicious activity

Evidence notes

The CVE record and NVD entry provide limited information about the vulnerability. Further verification is required to determine the full scope of the vulnerability.

Sources and references

Verified primary and authoritative sources

  • CVE-2026-86087 CVE Program record

    Publisher, destination, and source semantics verified

    URL: https://www.cve.org/CVERecord?id=CVE-2026-86087

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

  • CVE-2026-86087 NVD vulnerability detail

    Publisher, destination, and source semantics verified

    URL: https://nvd.nist.gov/vuln/detail/CVE-2026-86087

    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.