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PatchSiren cyber security CVE debrief

CVE-2026-7870 IBM CVE debrief

CVE-2026-7870 is a high-severity vulnerability in IBM i 7.6, 7.5, 7.4, and 7.3 that allows a user to gain elevated privileges due to an unqualified library call. A malicious actor could cause user-controlled code to run with administrator privilege. The vulnerability has a CVSS score of 8.8 and is classified as HIGH.

Vendor
IBM
Product
i
CVSS
HIGH 8.8
CISA KEV
Not listed in stored evidence
Original CVE published
2026-06-11
Original CVE updated
2026-06-16
Advisory published
2026-06-11
Advisory updated
2026-06-16

Who should care

Users of IBM i 7.6, 7.5, 7.4, and 7.3 should be aware of this vulnerability and take necessary actions to mitigate it.

Technical summary

The vulnerability is caused by an unqualified library call in IBM i 7.6, 7.5, 7.4, and 7.3, which allows a user to gain elevated privileges. The vulnerability is classified under CWE-427.

Defensive priority

high

Recommended defensive actions

  • Apply patches or updates provided by IBM to fix the vulnerability.
  • Review and update system configurations to prevent exploitation.

Evidence notes

The vulnerability is documented in the CVE record [cve-org] and the NVD detail page [nvd]. IBM has also provided a support page [ref-4] for this issue.

Sources and references

Verified primary and authoritative sources

  • CVE-2026-7870 CVE Program record

    Publisher, destination, and source semantics verified

    URL: https://www.cve.org/CVERecord?id=CVE-2026-7870

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

  • CVE-2026-7870 NVD vulnerability detail

    Publisher, destination, and source semantics verified

    URL: https://nvd.nist.gov/vuln/detail/CVE-2026-7870

    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.