Quick answers
- Is CVE-2026-18101 exploited in the wild?
- No. Junglewise Threat Intelligence has no report of CVE-2026-18101 being exploited in the wild.
- How severe is CVE-2026-18101?
- High severity, with a CVSS score of 8.8, published 13 August 2026.
- Which products and versions are affected?
- IBM I 7.3, 7.4, 7.5, 7.6.
- Is there a fix for CVE-2026-18101?
- A patch was published on 2026-08-13: PTFs released for IBM i 7.3–7.6 Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.
- How is CVE-2026-18101 attacked?
- It is attacked with local access.
- Am I affected by CVE-2026-18101?
- 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.
Technical details
The vulnerability is a privilege management flaw (CWE-269) in IBM i versions 7.3 through 7.6, where improper handling of thread authority swaps allows a local authenticated attacker to escalate privileges. The attack requires local access and low-level user privileges but no user interaction. An attacker can exploit this to gain elevated system privileges and compromise system integrity, confidentiality, and availability. IBM has released platform-specific PTFs (SJ10874, SJ10875, SJ10876, SJ10877 for versions 7.6, 7.5, 7.4, and 7.3 respectively) to remediate the issue.
Affected products
- IBM i 7.3, 7.4, 7.5, 7.6
Timeline
- 2026-08-13: disclosed: CVE-2026-18101 published
- 2026-08-13: patched: PTFs released for IBM i 7.3–7.6