# CVE-2026-19086: IBM i buffer overflow in PASE process

Source: https://junglewise.ai/threats/cve-2026-19086-ibm-i-buffer-overflow-in-pase-process  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2026-09-14. Updated: 2026-09-26  
License: CC BY 4.0 with a link back

CVE-2026-19086 · Severity: low · CVSS 3.3 · Published 2026-09-14

IBM i is an enterprise operating system used to run business-critical applications and services. A buffer overflow vulnerability in its PASE (Portable Application Solutions Environment) component allows authenticated users to crash their own processes, causing temporary service disruptions. While the impact is limited to individual process termination by authenticated users, this could be leveraged to disrupt operations or as part of a larger attack.

Technologies: [IBM i](https://junglewise.ai/threats/technologies/i). Vendors: [IBM](https://junglewise.ai/threats/vendors/ibm).

## Quick answers

**Is CVE-2026-19086 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2026-19086 being exploited in the wild.

**How severe is CVE-2026-19086?** Low severity, with a CVSS score of 3.3, published 14 September 2026.

**Which products and versions are affected?** IBM i 7.3, 7.4, 7.5, 7.6.

**Is there a fix for CVE-2026-19086?** 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.

**How is CVE-2026-19086 attacked?** It is attacked with local access.

**Am I affected by CVE-2026-19086?** 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

This is an out-of-bounds read vulnerability (CWE-125) in the PASE subsystem of IBM i. The vulnerability requires local authentication and user interaction is not needed. An authenticated attacker can trigger the buffer overflow to read memory beyond intended boundaries, leading to denial of service through process termination. The vulnerability affects IBM i versions 7.3, 7.4, 7.5, and 7.6. IBM has released PTF patches for all affected versions, and no exploit in the wild has been reported.

## Affected products

- IBM IBM i 7.3, 7.4, 7.5, 7.6

## Timeline

- 2026-09-14: disclosed

## References

- [https://www.ibm.com/support/pages/node/7287409](https://www.ibm.com/support/pages/node/7287409)

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