CVE-2026-10649 HIGH

CVE-2026-10649: Pacemaker: pacemaker: denial of service via integer overflow in remote message decompression

Vendor Red Hat
Product Red Hat Enterprise Linux 10
Weakness CWE-190
Published June 16, 2026
Last update June 30, 2026

CVSS base score

8.6/10
Attack vector Network
Attack complexity Low
Privileges required None
User interaction None
Confidentiality Low
Integrity Low

CVSS vector

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

What the vulnerability does

01Description

A flaw was found in Pacemaker. An unauthenticated remote attacker can exploit an integer overflow vulnerability in the remote message decompression process. By sending a specially crafted compressed remote message before authentication, an attacker can cause memory corruption, leading to a denial of service (DoS) in the CIB remote listener. This can result in the affected service crashing.

Key dates

02Disclosure timeline

June 16, 2026 CVE published
June 30, 2026 Record updated