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

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.

Published: 2026-06-16 Last update: 2026-06-16 Assigner: [email protected] Source: [email protected]
NVD Status：Awaiting Analysis，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2026-10649 is rated Moderate Risk (47/100): CVSS High severity, with low exploitation likelihood (EPSS 0.46%). Review affected assets and schedule remediation.

Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.

Exploit prediction scoring system (EPSS) score for CVE-2026-10649

EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).

# Date Old EPSS score New EPSS score Delta (New - Old)
1 2026-06-17 — 0.46% —

Full EPSS history (1 record total)

Common vulnerability scoring system (CVSS) metrics for CVE-2026-10649

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
8.6 3.1 HIGH
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:H Click to expand
Attack vector (AV:N)
Could be attacked over the internet or any normal routed network—not just someone sitting at the machine.
Attack complexity (AC:L)
Once they can reach the bug, pulling it off is straightforward—no weird race conditions or rare setup.
Privileges required (PR:N)
No account or special rights needed—anonymous or random user is enough.
User interaction (UI:N)
Nobody has to click “OK” or open a trap file; it can work without a victim helping.
Scope (S:U)
Damage stays in the same “trust bubble” as the broken component—no big spill into unrelated systems.
Confidentiality (C:L)
Some sensitive info could get out, but not a total data dump.
Integrity (I:L)
Attackers could change some data, but it’s limited—not everything goes.
Availability (A:H)
Could take the service down hard or make it unusable for people who depend on it.
 3.9 4.7 [email protected]

Weakness enumeration for CVE-2026-10649

GitHub Security Advisory for CVE-2026-10649

GHSA-94r4-qcg7-69qj · Severity: high — A flaw was found in Pacemaker. An unauthenticated remote attacker can exploit an integer overflow...

OS Trackers for CVE-2026-10649

vendor priority summary link
debian not yet assigned CVE-2026-10649 not yet assigned priority: Debian including 1 source packages (pacemaker), 5 status rows across 5 suites (bookworm, bullseye, forky, sid, trixie): open 5. https://security-tracker.debian.org/tracker/CVE-2026-10649
redhat high — https://access.redhat.com/security/cve/CVE-2026-10649
suse high — https://www.suse.com/security/cve/CVE-2026-10649/

Affected software / configurations for CVE-2026-10649

Vendor Product Version Raw CPE
No affected products in dataset.

References for CVE-2026-10649

cvelogic Threat Intelligence