CVE-2026-18670Vulnerabilities in IBM AIX and PowerVM VIOS

IBM AIX 7.2, and 7.3 and IBM PowerVM VIOS 4.1 could allow a remote attacker to cause a denial of service and potentially disclose sensitive information due to an integer underflow.

9.1 CRITICALEPSS 0.52%Not in KEVNVD: Analyzed

Last updated: 2026-10-26 10:10 UTC

OverviewCVSS details

9.1CRITICALCVSS 3.1

Score source: NVD
NVD status: Analyzed
Published: Aug 20, 2026
Assigner: ibm

Affected

AIX (IBM)

Versions: 7.2 · 7.3

+1 more product →

Exploitation

Public exploit: None listed
CISA KEV: Not listed
KEV due date: —
SSVC: Exploitation none · Automatable yes · Impact partial

EPSS · FIRST, scored Nov 7

0.52%chance of exploitation in 30 days

Higher than 44.92% of CVEs

CVSS 3.1 · NVD

9.1Critical

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H

Attack vector: Network
Attack complexity: Low
Privileges required: None
User interaction: None
Scope: Unchanged
Confidentiality impact: High
Integrity impact: None
Availability impact: High

CVSS 3.1 · ibm (CNA)

8.2High

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:H

Attack vector: Network
Attack complexity: Low
Privileges required: None
User interaction: None
Scope: Unchanged
Confidentiality impact: Low
Integrity impact: None
Availability impact: High

NVD status: Analyzed

Overview Affected Products References

NVD CVE.org

Overview

Severity

Score	Severity	Version	Vector String
9.1	CRITICAL	3.1NVD	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H
8.2	HIGH	3.1ibm (CNA)	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:H

Details

CVE ID: CVE-2026-18670
Status: Analyzed
Assigner (CNA): ibm
Published: Aug 20, 2026
Last modified: 2026-10-26 10:10 UTC
Weaknesses: CWE-190 · Integer Overflow or Wraparound
CWE-191

Sources

Refreshed hourly from the sources above. Last fetched 2026-11-08 10:45 UTC.