CVE-2026-19446

EUVD-2026-63751
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.
ProviderTypeBase ScoreAtk. VectorAtk. ComplexityPriv. RequiredVector
NISTPrimary
7.5 HIGH
NETWORK
LOW
NONE
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Base Score
CVSS 3.x
EPSS Score
Percentile: 62.59%
Affected Products (NVD)
VendorProductVersion
ibmvios
4.1.0 ≤
𝑥
< 4.1.0.50
ibmvios
4.1.1.0 ≤
𝑥
< 4.1.1.30
ibmvios
4.1.2.0 ≤
𝑥
< 4.1.2.20
ibmaix
7.2.5 ≤
𝑥
≤ 7.2.5.212
ibmaix
7.3.2 ≤
𝑥
≤ 7.3.2.5
ibmaix
7.3.3 ≤
𝑥
≤ 7.3.3.2
ibmaix
7.3.4 ≤
𝑥
≤ 7.3.4.1
𝑥
= Vulnerable software versions