Quick answers
- Is CVE-2026-19448 exploited in the wild?
- No. Junglewise Threat Intelligence has no report of CVE-2026-19448 being exploited in the wild.
- How severe is CVE-2026-19448?
- Medium severity, with a CVSS score of 6.5, 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-2026-19448?
- A patch was published: Patches available through IBM service packs and fix packs Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.
- How is CVE-2026-19448 attacked?
- It is attacked over the network.
- Am I affected by CVE-2026-19448?
- 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
A stack memory corruption vulnerability exists in the AIX IPsec ESP decapsulation handler that processes encrypted network traffic. The vulnerability allows network-based attackers to corrupt kernel stack state through crafted ESP packets. Successful exploitation causes a system crash and denial of service. The vulnerability affects AIX 7.2, 7.3, and PowerVM VIOS 4.1. Patches are available through IBM service packs and fix packs.
Affected products
- IBM AIX 7.2, 7.3
- IBM PowerVM VIOS 4.1
Timeline
- 2026-08-20: disclosed
- patched: Patches available through IBM service packs and fix packs