---
cve: "CVE-2026-10649"
severity: "HIGH"
cvss: 8.6
epss: "56%"
vendor: "Red Hat"
kev: false
exploited: false
published: "2026-06-16 17:16:30"
tags: [cve, security, high]
source: tsecurity.de CVE-Dossier
exported: "2026-09-07T03:33:25+02:00"
---

# CVE-2026-10649

> 8.6 HIGH · 🧪 PoC

## Beschreibung

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-Vektor

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

| Metrik | Wert | Bewertung |
|---|---|---|
| AV Angriffsvektor | Netzwerk | bad |
| AC Komplexität | Gering | bad |
| PR Privilegien | Keine | bad |
| UI Interaktion | Keine | bad |
| S Scope | Unverändert | good |
| C Vertraulichkeit | Gering | warn |
| I Integrität | Gering | warn |
| A Verfügbarkeit | Hoch | bad |

## Referenzen

- <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>

---
_Exportiert aus dem [tsecurity.de CVE-Dossier](https://tsecurity.de/cve?cve=CVE-2026-10649) · Datenquellen: EUVD (ENISA), NVD, OSV, CISA KEV, FIRST EPSS, Exploit-DB, BSI BITS_