CVE-2026-107674 IBM CVE debrief

Who should care

Defenders responsible for IBM i systems, particularly those using Digital Certificate Manager for System TLS, should assess potential exposure and impact. Defenders should prioritize verifying exposure and assessing potential impact on systems using Digital Certificate Manager for System TLS. This includes operators, platform administrators, vulnerability management teams, and security teams.

Why it matters

Defenders should prioritize verifying exposure and assessing potential impact on systems using Digital Certificate Manager for System TLS. This vulnerability could allow a bad actor to prevent a service from starting or cause it to fallback to non-secure connections. Evidence is limited, and additional information on potential exploitation or specific impacts is needed.

• Potential denial of service to Digital Certificate Manager for System TLS
• Possible fallback to non-secure connections
• Need to verify exposure and assess potential impact on systems using Digital Certificate Manager for System TLS
• Priority on reviewing and applying vendor-provided patches or updates

Technical summary

IBM i 7.3, 7.4, 7.5, and 7.6 are vulnerable to a denial of service in Digital Certificate Manager (DCM) for System TLS. A bad actor could use this to prevent a service from starting or cause it to fallback to non-secure connections. The vulnerability affects systems using Digital Certificate Manager for System TLS. Defenders should prioritize verifying exposure and assessing potential impact on systems using Digital Certificate Manager for System TLS. The CVE record and source item provide details on the vulnerability.

Defensive priority

Defenders should prioritize verifying exposure and assessing potential impact on systems using Digital Certificate Manager for System TLS.

Recommended defensive actions

• Verify exposure of Digital Certificate Manager for System TLS in IBM i 7.3, 7.4, 7.5, and 7.6
• Assess potential impact on systems using Digital Certificate Manager for System TLS
• Review and apply vendor-provided patches or updates
• Confirm whether affected product deployments exist in managed environments and assign an owner for follow-up
• 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
• Track exceptions, retest remediated assets, and close the item only after evidence is documented

Evidence notes

The CVE record and source item provide details on the vulnerability in IBM i 7.3, 7.4, 7.5, and 7.6. However, additional information on potential exploitation or specific impacts is limited. Defenders should verify exposure and assess potential impact on systems using Digital Certificate Manager for System TLS. The source item provides details on the vulnerability, but evidence is limited, and additional information is needed. The CVE Program record and NIST NVD detail page provide official information on the vulnerability.

Sources and 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.