# CVE-2026-17160: IBM AIX and PowerVM VIOS integer overflow in size computation

Source: https://junglewise.ai/threats/cve-2026-17160-ibm-aix-and-powervm-vios-integer-overflow-in-size-computation  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2026-08-20. Updated: 2026-09-25  
License: CC BY 4.0 with a link back

CVE-2026-17160 · Severity: critical · CVSS 9.8 · Published 2026-08-20

IBM AIX and IBM PowerVM VIOS are core operating systems used to run enterprise servers and virtualization infrastructure. An integer overflow vulnerability in size computation allows a remote attacker to execute arbitrary code with high severity, potentially compromising the entire system and all workloads running on it.

Technologies: [IBM Aix](https://junglewise.ai/threats/technologies/aix), [IBM PowerVM VIOS](https://junglewise.ai/threats/technologies/powervm-vios). Vendors: [IBM](https://junglewise.ai/threats/vendors/ibm).

## Quick answers

**Is CVE-2026-17160 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2026-17160 being exploited in the wild.

**How severe is CVE-2026-17160?** Critical severity, with a CVSS score of 9.8, published 20 August 2026.

**Which products and versions are affected?** IBM Aix 7.2, 7.3; IBM PowerVM VIOS 4.1.

**Is there a fix for CVE-2026-17160?** 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-2026-17160 attacked?** It is attacked over the network.

**Am I affected by CVE-2026-17160?** Check whether you run IBM Aix or IBM PowerVM VIOS 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 an integer overflow during size computation in IBM AIX 7.2, 7.3, and IBM PowerVM VIOS 4.1. The root cause involves improper handling of size values that can overflow, leading to undersized memory allocations. This allows a remote attacker to achieve arbitrary code execution by exploiting the integer overflow to bypass bounds checks. No authentication or local access is required; the attack can be mounted over the network. A patch is available through IBM service packs and fix packs as described in the security bulletin.

## Affected products

- IBM AIX 7.2, 7.3
- IBM PowerVM VIOS 4.1

## Timeline

- 2026-08-20: disclosed
- 2026-08-21: advisory: IBM security bulletin updated with additional installation instructions

## References

- [https://www.ibm.com/support/pages/node/7283858](https://www.ibm.com/support/pages/node/7283858)

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