Vulnerability · Published Aug 20, 2026 · Assigned by ibm
CVE-2026-19448Vulnerabilities in IBM AIX and PowerVM VIOS
Medium 6.5
In plain English
A medium-severity security flaw in AIX from IBM. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.4% (higher than 29% of all known vulnerabilities).
Severity (CVSS 3.1)6.5Medium
Exploit odds (30 days)0.4%top 70.8% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known
Official description
IBM AIX 7.2, and 7.3 and IBM PowerVM VIOS 4.1 A stack memory corruption vulnerability exists in the AIX IPsec ESP decapsulation handler. Successful exploitation may corrupt kernel stack state and cause a system crash, resulting in denial of service.
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| IBM | AIX | 7.27.3 |
| IBM | PowerVM VIOS | 4.1 |
Weakness: CWE-908 · Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:H
References
- https://www.ibm.com/support/pages/node/7283858 vendor-advisory, patch