CVE-2026-10649

HIGH

Pacemaker: pacemaker: denial of service via integer overflow in remote message decompression

Title source: cna

Description

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.

References (5)

Core 5

Core References

Vdb Entry, X_Refsource_Redhat vdb-entry x_refsource_redhat

https://access.redhat.com/security/cve/CVE-2026-10649

Issue Tracking, X_Refsource_Redhat issue-tracking x_refsource_redhat

RHBZ#2462817

https://bugzilla.redhat.com/show_bug.cgi?id=2462817

https://github.com/clusterLabs/pacemaker/pull/4128

Mailing List

http://www.openwall.com/lists/oss-security/2026/06/16/6

Vendor Advisory

https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-10649.json

Scores

CVSS v3 8.6

EPSS 0.0044

EPSS Percentile 35.5%

Attack Vector NETWORK

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

CISA SSVC

Vulnrichment

Exploitation none

Automatable yes

Technical Impact partial

Details

CWE

CWE-190

Status published

Products (6)

Red Hat/Red Hat Enterprise Linux 10

Red Hat/Red Hat Enterprise Linux 6

Red Hat/Red Hat Enterprise Linux 7

Red Hat/Red Hat Enterprise Linux 8

Red Hat/Red Hat Enterprise Linux 9

Red Hat/Red Hat OpenShift Container Platform 4

Published Jun 16, 2026

Tracked Since Jun 16, 2026