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CVE-2026-17186 IBM CVE debrief

IBM Db2 Mirror for i 7.4, 7.5, and 7.6 are vulnerable to remote CL command execution due to improper neutralization of special elements in a command. This vulnerability, CVE-2026-17186, has a CVSS score of 9.9 and is considered CRITICAL. Organizations using these versions should be aware of the potential for remote code execution and take immediate action to patch or mitigate the vulnerability. The CVE record was published on 2026-08-14T20:16:51.127Z and has not been modified since then. Evidence is based on official CVE and NVD records.

Vendor
IBM
Product
Db2 Mirror for i
CVSS
CRITICAL 9.9
CISA KEV
Not listed in stored evidence
Original CVE published
2026-08-14
Original CVE updated
2026-08-21
Advisory published
2026-08-14
Advisory updated
2026-08-21

Who should care

Organizations using IBM Db2 Mirror for i versions 7.4, 7.5, and 7.6 should be aware of this vulnerability and take steps to patch or mitigate it. IT administrators, security teams, and operators responsible for iSeries environments are particularly concerned. The vulnerability's high CVSS score and potential for remote code execution make it a critical priority for affected organizations.

Technical summary

IBM Db2 Mirror for i 7.4, 7.5, and 7.6 are vulnerable to remote CL command execution due to improper neutralization of special elements in a command. This vulnerability has a CVSS score of 9.9 and is considered CRITICAL. The affected products are used for mirroring and synchronization in iSeries environments. The vulnerability allows remote attackers to execute arbitrary CL commands, potentially leading to full system compromise. Organizations should prioritize patching to prevent potential remote code execution.

Defensive priority

Organizations using IBM Db2 Mirror for i versions 7.4, 7.5, and 7.6 should prioritize patching to prevent potential remote code execution.

Recommended defensive actions

  • Apply patches for IBM Db2 Mirror for i versions 7.4, 7.5, and 7.6
  • Restrict access to vulnerable systems until patched
  • Monitor for suspicious activity on affected systems
  • Review compensating controls for exposed systems while remediation is scheduled and verified
  • Check relevant monitoring, detection, and logs for exposed assets that need extra review

Evidence notes

The CVE record indicates that IBM Db2 Mirror for i 7.4, 7.5, and 7.6 could allow a remote attacker to execute arbitrary CL commands due to improper neutralization of special elements in a command. Evidence is based on official CVE and NVD records. The vulnerability has a CVSS score of 9.9 and is considered CRITICAL. Organizations should verify their deployments and plan for patching or mitigation. Defensive priorities include restricting access to vulnerable systems and monitoring for suspicious activity.

Official resources

AI-assisted PatchSiren debrief based on the supplied source corpus. The CVE record was published on 2026-08-14T20:16:51.127Z and has not been modified since then.