Quick answers
- Is CVE-2026-17484 exploited in the wild?
- No. Junglewise Threat Intelligence has no report of CVE-2026-17484 being exploited in the wild.
- How severe is CVE-2026-17484?
- Medium severity, with a CVSS score of 5.3, published 13 October 2026.
- Which products and versions are affected?
- IBM I 7.3, 7.4, 7.5, 7.6.
- Is there a fix for CVE-2026-17484?
- Yes: fixed in IBM i 7.6 (PTF MJ11636 or MJ11441), 7.5 (PTF MJ11635 or MJ11439), 7.4 (PTF MJ11634 or MJ11438), 7.3 (PTF MJ11633 or MJ11448). Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.
- How is CVE-2026-17484 attacked?
- It is attacked with local access, in an operating system.
- Am I affected by CVE-2026-17484?
- Check whether you run IBM I at an affected version. 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.
How to fix
- Fixed in: IBM i 7.6 (PTF MJ11636 or MJ11441), 7.5 (PTF MJ11635 or MJ11439), 7.4 (PTF MJ11634 or MJ11438), 7.3 (PTF MJ11633 or MJ11448)
Technical details
The vulnerability is an improper access control flaw in IBM i's Dedicated Service Tools (DST) or System Service Tools (SST) that allows a local attacker to trigger a denial of service condition. The attack vector is local (not network-accessible), and the attacker needs local system access. A fix is available via PTF numbers specific to each IBM i release.
Affected products
- IBM i 7.3, 7.4, 7.5, 7.6
Timeline
- 2026-09-29: disclosed
- 2026-10-13: advisory