{"document":{"category":"csaf_vex","csaf_version":"2.0","title":"CVE-2026-10649: Pacemaker: pacemaker: denial of service via integer overflow in remote message decompression","publisher":{"category":"vendor","name":"HarborGuard Database","namespace":"https://database.harborguard.co"},"tracking":{"id":"CVE-2026-10649","status":"final","version":"1","initial_release_date":"2026-06-16T15:57:38.911Z","current_release_date":"2026-06-16T17:42:34.626Z","revision_history":[{"date":"2026-06-16T15:57:38.911Z","number":"1","summary":"Initial machine-readable export from HarborGuard."}]},"distribution":{"tlp":{"label":"WHITE"},"text":"Public CVE data; freely redistributable."},"notes":[{"category":"description","text":"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.","title":"CVE description"}],"references":[{"category":"self","summary":"CVE-2026-10649 on HarborGuard Database","url":"https://database.harborguard.co/cve/CVE-2026-10649"},{"category":"external","summary":"CVE Record","url":"https://www.cve.org/CVERecord?id=CVE-2026-10649"},{"category":"external","summary":"access.redhat.com","url":"https://access.redhat.com/security/cve/CVE-2026-10649"},{"category":"external","summary":"RHBZ#2462817","url":"https://bugzilla.redhat.com/show_bug.cgi?id=2462817"},{"category":"external","summary":"github.com","url":"https://github.com/clusterLabs/pacemaker/pull/4128"}]},"product_tree":{"branches":[{"category":"vendor","name":"Red Hat","branches":[{"category":"product_name","name":"Red Hat Enterprise Linux 10","branches":[{"category":"product_version","name":"*","product":{"name":"Red Hat Red Hat Enterprise Linux 10 *","product_id":"CSAFPID-1","product_identification_helper":{"cpe":"cpe:2.3:a:red_hat:red_hat_enterprise_linux_10:*:*:*:*:*:*:*:*"}}}]}]},{"category":"vendor","name":"Red Hat","branches":[{"category":"product_name","name":"Red Hat Enterprise Linux 6","branches":[{"category":"product_version","name":"*","product":{"name":"Red Hat Red Hat Enterprise Linux 6 *","product_id":"CSAFPID-2","product_identification_helper":{"cpe":"cpe:2.3:a:red_hat:red_hat_enterprise_linux_6:*:*:*:*:*:*:*:*"}}}]}]},{"category":"vendor","name":"Red Hat","branches":[{"category":"product_name","name":"Red Hat Enterprise Linux 7","branches":[{"category":"product_version","name":"*","product":{"name":"Red Hat Red Hat Enterprise Linux 7 *","product_id":"CSAFPID-3","product_identification_helper":{"cpe":"cpe:2.3:a:red_hat:red_hat_enterprise_linux_7:*:*:*:*:*:*:*:*"}}}]}]},{"category":"vendor","name":"Red Hat","branches":[{"category":"product_name","name":"Red Hat Enterprise Linux 8","branches":[{"category":"product_version","name":"*","product":{"name":"Red Hat Red Hat Enterprise Linux 8 *","product_id":"CSAFPID-4","product_identification_helper":{"cpe":"cpe:2.3:a:red_hat:red_hat_enterprise_linux_8:*:*:*:*:*:*:*:*"}}}]}]},{"category":"vendor","name":"Red Hat","branches":[{"category":"product_name","name":"Red Hat Enterprise Linux 9","branches":[{"category":"product_version","name":"*","product":{"name":"Red Hat Red Hat Enterprise Linux 9 *","product_id":"CSAFPID-5","product_identification_helper":{"cpe":"cpe:2.3:a:red_hat:red_hat_enterprise_linux_9:*:*:*:*:*:*:*:*"}}}]}]},{"category":"vendor","name":"Red Hat","branches":[{"category":"product_name","name":"Red Hat OpenShift Container Platform 4","branches":[{"category":"product_version","name":"*","product":{"name":"Red Hat Red Hat OpenShift Container Platform 4 *","product_id":"CSAFPID-6","product_identification_helper":{"cpe":"cpe:2.3:a:red_hat:red_hat_openshift_container_platform_4:*:*:*:*:*:*:*:*"}}}]}]}]},"vulnerabilities":[{"cve":"CVE-2026-10649","title":"Pacemaker: pacemaker: denial of service via integer overflow in remote message decompression","notes":[{"category":"description","text":"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.","title":"CVE description"}],"product_status":{"known_affected":["CSAFPID-1","CSAFPID-2","CSAFPID-3","CSAFPID-4","CSAFPID-5","CSAFPID-6"]},"scores":[{"cvss_v3":{"version":"3.1","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:H","baseScore":8.6,"baseSeverity":"HIGH"},"products":["CSAFPID-1","CSAFPID-2","CSAFPID-3","CSAFPID-4","CSAFPID-5","CSAFPID-6"]}],"remediations":[{"category":"none_available","details":"No fixed version is published yet. Monitor the upstream advisory.","product_ids":["CSAFPID-1","CSAFPID-2","CSAFPID-3","CSAFPID-4","CSAFPID-5","CSAFPID-6"]}]}]}