Vulnerability 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.
CVSS Score
HIGH
Related Weaknesses (CWE)
References
- https://access.redhat.com/errata/RHSA-2026:39322
- https://access.redhat.com/errata/RHSA-2026:39323
- https://access.redhat.com/errata/RHSA-2026:40833
- https://access.redhat.com/errata/RHSA-2026:41041
- https://access.redhat.com/errata/RHSA-2026:41042
- https://access.redhat.com/errata/RHSA-2026:41043
- https://access.redhat.com/errata/RHSA-2026:41044
- https://access.redhat.com/errata/RHSA-2026:42041
- https://access.redhat.com/errata/RHSA-2026:42075
- https://access.redhat.com/errata/RHSA-2026:42076
- https://access.redhat.com/errata/RHSA-2026:43606
- https://access.redhat.com/security/cve/CVE-2026-10649
- https://bugzilla.redhat.com/show_bug.cgi?id=2462817
- https://github.com/clusterLabs/pacemaker/pull/4128
- http://www.openwall.com/lists/oss-security/2026/06/16/6
FAQ
What is CVE-2026-10649?
CVE-2026-10649 is a vulnerability with a CVSS score of 8.6 (HIGH). 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 r...
How severe is CVE-2026-10649?
CVE-2026-10649 has been rated HIGH with a CVSS base score of 8.6/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2026-10649?
Check the references section above for vendor advisories and patch information. Review vendor security bulletins for remediation guidance.