CVE-2026-19446

HIGH
MEDIUM Priority: 0.11 BB Relevance: 75/100
Published: 2026-08-20 Modified: 2026-10-26 First seen: 2026-10-29 Status: active

Attack Surface

Network Low Complexity No Auth No Interaction

CVSS Vector Breakdown

AV: Network
AC: Low
PR: None
UI: None
S: Unchanged
C: None
I: None
A: High

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.

Weakness Classification (1)

Affected Software (2)

VendorProductVersion
ibm aix 7.2.5 – 7.2.5.212
ibm vios 4.1.0 – 4.1.0.50

References & Advisories (1)

Bug Bounty Relevance

75 / 100
✓ Network accessible
✓ No authentication
✓ Low complexity
✓ No user interaction

CVSS Score

7.5 / 10.0 v3.1
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

EPSS — Exploitation Probability

1.47%
Raw Score 0.014650
Percentile 73.6%
Date 2026-10-29

EPSS Trend

2026-10-29
0.01465
2026-10-28
0.01465

Intelligence Sources

nvd ref →