CVE-2026-10858 CRITICAL

CVE-2026-10858: IBM MQ for HPE NonStop is vulnerable to a denial of service attack

Vendor Ibm
Product MQ for HPE NonStop
Weakness CWE-122
Published September 18, 2026
Last update September 19, 2026
View on NVD All CVEs

CVSS base score

9.9/10
Attack vector Network
Attack complexity Low
Privileges required Low
User interaction None
Confidentiality High
Integrity High

CVSS vector

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

What the vulnerability does

01Description

IBM MQ for HPE NonStop 8.1.0 through 8.1.0.40 could allow an authenticated attacker to cause a denial of service or potentially execute arbitrary code due to a heap buffer underflow when processing multi-segment messages.

Key dates

02Disclosure timeline

September 18, 2026 CVE published
September 19, 2026 Record updated