CVE-2026-17218: IBM i 7.6, 7.5, 7.4, and 7.3 could allow a remote attacker to execute arbitrary code due to an out-of-bounds write.

CVE-2026-17218 · Severity: critical · CVSS 9.8 · Published 2026-08-12

IBM i 7.6, 7.5, 7.4, and 7.3 could allow a remote attacker to execute arbitrary code due to an out-of-bounds write.

Technologies: IBM I. Vendors: IBM.

Quick answers

Is CVE-2026-17218 exploited in the wild?
No. Junglewise Threat Intelligence has no report of CVE-2026-17218 being exploited in the wild.
How severe is CVE-2026-17218?
Critical severity, with a CVSS score of 9.8, published 12 August 2026.
Which products and versions are affected?
IBM I. The advisory does not name versions.
Is there a fix for CVE-2026-17218?
No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.
Am I affected by CVE-2026-17218?
Check whether you run IBM I. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

Affected products

  • IBM I

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