Vulnerability · Published Aug 20, 2026 · Assigned by ibm
CVE-2026-19446Vulnerabilities in IBM AIX and PowerVM VIOS
High 7.5
In plain English
A high-severity uncontrolled resource consumption 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 1.5% (higher than 74% of all known vulnerabilities).
Severity (CVSS 3.1)7.5High
Exploit odds (30 days)1.5%top 26.2% 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 allows a remote unauthenticated attacker can send a crafted UDP packet to a reachable RPC service, resulting in complete system unavailability and requiring an LPAR restart.
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| IBM | AIX | 7.27.3 |
| IBM | PowerVM VIOS | 4.1 |
Weakness: CWE-400 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
References
- https://www.ibm.com/support/pages/node/7283858 vendor-advisory, patch